./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.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/mix044_power.oepc_pso.oepc_rmo.oepc.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 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:08:56,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:08:56,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:08:56,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:08:56,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:08:56,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:08:56,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:08:56,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:08:56,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:08:56,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:08:56,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:08:56,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:08:56,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:08:56,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:08:56,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:08:56,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:08:56,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:08:56,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:08:56,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:08:56,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:08:56,539 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:08:56,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:08:56,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:08:56,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:08:56,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:08:56,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:08:56,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:08:56,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:08:56,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:08:56,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:08:56,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:08:56,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:08:56,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:08:56,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:08:56,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:08:56,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:08:56,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:08:56,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:08:56,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:08:56,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:08:56,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:08:56,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:08:56,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:08:56,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:08:56,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:08:56,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:08:56,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:08:56,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:08:56,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:08:56,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:08:56,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:08:56,589 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:08:56,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:08:56,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:08:56,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:08:56,591 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:08:56,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:08:56,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:08:56,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:08:56,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:08:56,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:08:56,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:08:56,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:56,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:08:56,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:08:56,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:08:56,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:08:56,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:08:56,594 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:08:56,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:08:56,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:08:56,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b [2022-07-19 21:08:56,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:08:56,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:08:56,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:08:56,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:08:56,882 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:08:56,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:56,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62c24284/0c8e538b12894d3b8716354ca5aedf1f/FLAGc65b72e97 [2022-07-19 21:08:57,417 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:08:57,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:57,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62c24284/0c8e538b12894d3b8716354ca5aedf1f/FLAGc65b72e97 [2022-07-19 21:08:57,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62c24284/0c8e538b12894d3b8716354ca5aedf1f [2022-07-19 21:08:57,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:08:57,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:08:57,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:57,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:08:57,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:08:57,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:57" (1/1) ... [2022-07-19 21:08:57,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446b097b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:57, skipping insertion in model container [2022-07-19 21:08:57,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:57" (1/1) ... [2022-07-19 21:08:57,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:08:57,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:08:57,968 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-19 21:08:58,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:58,170 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:08:58,180 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-19 21:08:58,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:58,278 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:08:58,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58 WrapperNode [2022-07-19 21:08:58,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:58,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:58,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:08:58,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:08:58,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,368 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-19 21:08:58,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:58,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:08:58,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:08:58,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:08:58,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:08:58,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:08:58,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:08:58,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:08:58,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (1/1) ... [2022-07-19 21:08:58,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:08:58,465 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 21:08:58,470 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 21:08:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:08:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:08:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:08:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:08:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:08:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:08:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:08:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:08:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:08:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:08:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:08:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:08:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:08:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:08:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:08:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:08:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:08:58,508 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 21:08:58,708 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:08:58,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:08:59,208 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:08:59,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:08:59,557 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:08:59,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:59 BoogieIcfgContainer [2022-07-19 21:08:59,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:08:59,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:08:59,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:08:59,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:08:59,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:08:57" (1/3) ... [2022-07-19 21:08:59,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1ded7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:59, skipping insertion in model container [2022-07-19 21:08:59,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:58" (2/3) ... [2022-07-19 21:08:59,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1ded7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:59, skipping insertion in model container [2022-07-19 21:08:59,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:59" (3/3) ... [2022-07-19 21:08:59,572 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:59,577 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:08:59,585 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:08:59,585 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:08:59,585 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:08:59,663 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:08:59,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-19 21:08:59,775 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-19 21:08:59,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:59,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-19 21:08:59,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-19 21:08:59,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-19 21:08:59,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:08:59,815 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@41a182e8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42a0b51e [2022-07-19 21:08:59,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:08:59,823 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2022-07-19 21:08:59,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:59,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:59,824 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] [2022-07-19 21:08:59,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1951185825, now seen corresponding path program 1 times [2022-07-19 21:08:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:59,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808521144] [2022-07-19 21:08:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:00,147 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 21:09:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808521144] [2022-07-19 21:09:00,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808521144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:00,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:00,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:09:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618511484] [2022-07-19 21:09:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:09:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:09:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:09:00,202 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-19 21:09:00,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 21:09:00,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:00,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-19 21:09:00,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:00,519 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-19 21:09:00,519 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:09:00,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3456 event pairs, 132 based on Foata normal form. 46/627 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-19 21:09:00,532 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-19 21:09:00,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-19 21:09:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:09:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:09:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-19 21:09:00,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-19 21:09:00,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-19 21:09:00,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-19 21:09:00,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:00,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-19 21:09:00,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 21:09:00,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 21:09:00,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 21:09:00,577 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-19 21:09:00,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-19 21:09:00,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:09:00,588 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-19 21:09:00,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-19 21:09:00,595 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-19 21:09:00,595 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-19 21:09:00,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 21:09:00,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:00,596 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] [2022-07-19 21:09:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:09:00,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash 771760905, now seen corresponding path program 1 times [2022-07-19 21:09:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:00,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348151931] [2022-07-19 21:09:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:00,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:00,865 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 21:09:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348151931] [2022-07-19 21:09:00,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348151931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:00,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:00,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:09:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841920753] [2022-07-19 21:09:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:09:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:09:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:09:00,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:00,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 21:09:00,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:00,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:00,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:05,784 INFO L129 PetriNetUnfolder]: 15341/33340 cut-off events. [2022-07-19 21:09:05,785 INFO L130 PetriNetUnfolder]: For 1279/1279 co-relation queries the response was YES. [2022-07-19 21:09:05,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55802 conditions, 33340 events. 15341/33340 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 353660 event pairs, 3240 based on Foata normal form. 0/32608 useless extension candidates. Maximal degree in co-relation 55741. Up to 7696 conditions per place. [2022-07-19 21:09:06,161 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 37 selfloop transitions, 10 changer transitions 96/232 dead transitions. [2022-07-19 21:09:06,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 754 flow [2022-07-19 21:09:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:09:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:09:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1086 transitions. [2022-07-19 21:09:06,167 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.86810551558753 [2022-07-19 21:09:06,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1086 transitions. [2022-07-19 21:09:06,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1086 transitions. [2022-07-19 21:09:06,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:06,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1086 transitions. [2022-07-19 21:09:06,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.66666666666667) internal successors, (1086), 9 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 21:09:06,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 21:09:06,175 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 21:09:06,175 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 9 states and 1086 transitions. [2022-07-19 21:09:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 754 flow [2022-07-19 21:09:06,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 232 transitions, 736 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:09:06,183 INFO L242 Difference]: Finished difference. Result has 156 places, 124 transitions, 366 flow [2022-07-19 21:09:06,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=156, PETRI_TRANSITIONS=124} [2022-07-19 21:09:06,185 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 10 predicate places. [2022-07-19 21:09:06,185 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 124 transitions, 366 flow [2022-07-19 21:09:06,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 21:09:06,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:06,186 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] [2022-07-19 21:09:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:09:06,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 584091720, now seen corresponding path program 1 times [2022-07-19 21:09:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716370083] [2022-07-19 21:09:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:06,384 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 21:09:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716370083] [2022-07-19 21:09:06,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716370083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552976239] [2022-07-19 21:09:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:06,389 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:06,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 124 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 21:09:06,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:06,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:06,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:09,068 INFO L129 PetriNetUnfolder]: 10966/19304 cut-off events. [2022-07-19 21:09:09,069 INFO L130 PetriNetUnfolder]: For 31428/31439 co-relation queries the response was YES. [2022-07-19 21:09:09,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56838 conditions, 19304 events. 10966/19304 cut-off events. For 31428/31439 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 159230 event pairs, 1090 based on Foata normal form. 330/19317 useless extension candidates. Maximal degree in co-relation 56765. Up to 6304 conditions per place. [2022-07-19 21:09:09,282 INFO L132 encePairwiseOnDemand]: 124/139 looper letters, 45 selfloop transitions, 15 changer transitions 106/255 dead transitions. [2022-07-19 21:09:09,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 255 transitions, 1390 flow [2022-07-19 21:09:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1534 transitions. [2022-07-19 21:09:09,289 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489208633093526 [2022-07-19 21:09:09,289 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1534 transitions. [2022-07-19 21:09:09,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1534 transitions. [2022-07-19 21:09:09,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:09,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1534 transitions. [2022-07-19 21:09:09,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.0) internal successors, (1534), 13 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 21:09:09,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:09,303 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:09,303 INFO L186 Difference]: Start difference. First operand has 156 places, 124 transitions, 366 flow. Second operand 13 states and 1534 transitions. [2022-07-19 21:09:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 255 transitions, 1390 flow [2022-07-19 21:09:09,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 255 transitions, 1300 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:09:09,362 INFO L242 Difference]: Finished difference. Result has 158 places, 131 transitions, 500 flow [2022-07-19 21:09:09,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=500, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2022-07-19 21:09:09,365 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-07-19 21:09:09,365 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 500 flow [2022-07-19 21:09:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 21:09:09,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:09,366 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, 1] [2022-07-19 21:09:09,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:09:09,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1266680312, now seen corresponding path program 1 times [2022-07-19 21:09:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:09,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081596576] [2022-07-19 21:09:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:09,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:09,559 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 21:09:09,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:09,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081596576] [2022-07-19 21:09:09,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081596576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:09,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:09,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:09,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169093109] [2022-07-19 21:09:09,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:09,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:09,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:09,564 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:09,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 21:09:09,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:09,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:09,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:12,058 INFO L129 PetriNetUnfolder]: 10502/18118 cut-off events. [2022-07-19 21:09:12,058 INFO L130 PetriNetUnfolder]: For 68155/68176 co-relation queries the response was YES. [2022-07-19 21:09:12,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64424 conditions, 18118 events. 10502/18118 cut-off events. For 68155/68176 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 146432 event pairs, 1730 based on Foata normal form. 360/18289 useless extension candidates. Maximal degree in co-relation 64335. Up to 5682 conditions per place. [2022-07-19 21:09:12,253 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 54 selfloop transitions, 20 changer transitions 112/275 dead transitions. [2022-07-19 21:09:12,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 275 transitions, 1816 flow [2022-07-19 21:09:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1541 transitions. [2022-07-19 21:09:12,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8527946873270614 [2022-07-19 21:09:12,258 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1541 transitions. [2022-07-19 21:09:12,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1541 transitions. [2022-07-19 21:09:12,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:12,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1541 transitions. [2022-07-19 21:09:12,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.53846153846153) internal successors, (1541), 13 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states 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 21:09:12,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:12,267 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:12,268 INFO L186 Difference]: Start difference. First operand has 158 places, 131 transitions, 500 flow. Second operand 13 states and 1541 transitions. [2022-07-19 21:09:12,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 275 transitions, 1816 flow [2022-07-19 21:09:12,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 275 transitions, 1768 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-19 21:09:12,575 INFO L242 Difference]: Finished difference. Result has 173 places, 141 transitions, 714 flow [2022-07-19 21:09:12,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=714, PETRI_PLACES=173, PETRI_TRANSITIONS=141} [2022-07-19 21:09:12,576 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-07-19 21:09:12,577 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 141 transitions, 714 flow [2022-07-19 21:09:12,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 21:09:12,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:12,577 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] [2022-07-19 21:09:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:09:12,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1225924999, now seen corresponding path program 1 times [2022-07-19 21:09:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:12,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629451953] [2022-07-19 21:09:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:12,717 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 21:09:12,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629451953] [2022-07-19 21:09:12,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629451953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:12,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081901177] [2022-07-19 21:09:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:12,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:12,721 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:12,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 141 transitions, 714 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 21:09:12,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:12,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:12,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:14,984 INFO L129 PetriNetUnfolder]: 8775/15192 cut-off events. [2022-07-19 21:09:14,984 INFO L130 PetriNetUnfolder]: For 94132/94165 co-relation queries the response was YES. [2022-07-19 21:09:15,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61674 conditions, 15192 events. 8775/15192 cut-off events. For 94132/94165 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 117960 event pairs, 1204 based on Foata normal form. 346/15344 useless extension candidates. Maximal degree in co-relation 61569. Up to 3575 conditions per place. [2022-07-19 21:09:15,223 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 67 selfloop transitions, 13 changer transitions 118/287 dead transitions. [2022-07-19 21:09:15,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 287 transitions, 2432 flow [2022-07-19 21:09:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1533 transitions. [2022-07-19 21:09:15,228 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8483674598782512 [2022-07-19 21:09:15,228 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1533 transitions. [2022-07-19 21:09:15,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1533 transitions. [2022-07-19 21:09:15,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:15,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1533 transitions. [2022-07-19 21:09:15,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.92307692307692) internal successors, (1533), 13 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 21:09:15,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:15,236 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:15,237 INFO L186 Difference]: Start difference. First operand has 173 places, 141 transitions, 714 flow. Second operand 13 states and 1533 transitions. [2022-07-19 21:09:15,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 287 transitions, 2432 flow [2022-07-19 21:09:15,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 287 transitions, 2362 flow, removed 35 selfloop flow, removed 6 redundant places. [2022-07-19 21:09:15,524 INFO L242 Difference]: Finished difference. Result has 182 places, 148 transitions, 884 flow [2022-07-19 21:09:15,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=884, PETRI_PLACES=182, PETRI_TRANSITIONS=148} [2022-07-19 21:09:15,525 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 36 predicate places. [2022-07-19 21:09:15,525 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 148 transitions, 884 flow [2022-07-19 21:09:15,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 21:09:15,526 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:15,526 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:15,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:09:15,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1846326714, now seen corresponding path program 1 times [2022-07-19 21:09:15,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:15,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79806591] [2022-07-19 21:09:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:15,614 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 21:09:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79806591] [2022-07-19 21:09:15,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79806591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:15,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:15,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:09:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534882876] [2022-07-19 21:09:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:09:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:09:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:09:15,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:09:15,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 148 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 21:09:15,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:15,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:09:15,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:20,889 INFO L129 PetriNetUnfolder]: 20057/35454 cut-off events. [2022-07-19 21:09:20,889 INFO L130 PetriNetUnfolder]: For 74735/86660 co-relation queries the response was YES. [2022-07-19 21:09:21,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90336 conditions, 35454 events. 20057/35454 cut-off events. For 74735/86660 co-relation queries the response was YES. Maximal size of possible extension queue 2265. Compared 330238 event pairs, 1107 based on Foata normal form. 451/33927 useless extension candidates. Maximal degree in co-relation 90225. Up to 10867 conditions per place. [2022-07-19 21:09:21,499 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 101 selfloop transitions, 20 changer transitions 0/244 dead transitions. [2022-07-19 21:09:21,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 244 transitions, 1604 flow [2022-07-19 21:09:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:09:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:09:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-19 21:09:21,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-19 21:09:21,505 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-19 21:09:21,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-19 21:09:21,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:21,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-19 21:09:21,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 21:09:21,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:09:21,514 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:09:21,514 INFO L186 Difference]: Start difference. First operand has 182 places, 148 transitions, 884 flow. Second operand 10 states and 1227 transitions. [2022-07-19 21:09:21,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 244 transitions, 1604 flow [2022-07-19 21:09:21,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 244 transitions, 1510 flow, removed 45 selfloop flow, removed 11 redundant places. [2022-07-19 21:09:21,801 INFO L242 Difference]: Finished difference. Result has 177 places, 166 transitions, 975 flow [2022-07-19 21:09:21,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=975, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2022-07-19 21:09:21,802 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 31 predicate places. [2022-07-19 21:09:21,803 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 975 flow [2022-07-19 21:09:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 21:09:21,803 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:21,804 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:21,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:09:21,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash -564694494, now seen corresponding path program 1 times [2022-07-19 21:09:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:21,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119090797] [2022-07-19 21:09:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:21,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:21,979 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 21:09:21,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:21,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119090797] [2022-07-19 21:09:21,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119090797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:21,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:21,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076509969] [2022-07-19 21:09:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:21,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:21,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 975 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 21:09:21,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:21,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:21,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:25,794 INFO L129 PetriNetUnfolder]: 9457/23682 cut-off events. [2022-07-19 21:09:25,794 INFO L130 PetriNetUnfolder]: For 81474/85476 co-relation queries the response was YES. [2022-07-19 21:09:25,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78176 conditions, 23682 events. 9457/23682 cut-off events. For 81474/85476 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 276446 event pairs, 2463 based on Foata normal form. 527/22842 useless extension candidates. Maximal degree in co-relation 78063. Up to 4011 conditions per place. [2022-07-19 21:09:26,056 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 126 selfloop transitions, 53 changer transitions 0/286 dead transitions. [2022-07-19 21:09:26,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 286 transitions, 2293 flow [2022-07-19 21:09:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-07-19 21:09:26,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8406198118428334 [2022-07-19 21:09:26,060 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-07-19 21:09:26,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-07-19 21:09:26,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:26,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-07-19 21:09:26,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states 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 21:09:26,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:26,067 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:26,067 INFO L186 Difference]: Start difference. First operand has 177 places, 166 transitions, 975 flow. Second operand 13 states and 1519 transitions. [2022-07-19 21:09:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 286 transitions, 2293 flow [2022-07-19 21:09:26,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 286 transitions, 2219 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-07-19 21:09:26,336 INFO L242 Difference]: Finished difference. Result has 192 places, 196 transitions, 1618 flow [2022-07-19 21:09:26,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1618, PETRI_PLACES=192, PETRI_TRANSITIONS=196} [2022-07-19 21:09:26,337 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 46 predicate places. [2022-07-19 21:09:26,337 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 196 transitions, 1618 flow [2022-07-19 21:09:26,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 21:09:26,338 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:26,338 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:09:26,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2094097610, now seen corresponding path program 1 times [2022-07-19 21:09:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:26,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630222972] [2022-07-19 21:09:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:26,434 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 21:09:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:26,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630222972] [2022-07-19 21:09:26,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630222972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:26,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:26,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351917239] [2022-07-19 21:09:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:26,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:09:26,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 196 transitions, 1618 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 21:09:26,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:26,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:09:26,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:34,389 INFO L129 PetriNetUnfolder]: 27394/49459 cut-off events. [2022-07-19 21:09:34,389 INFO L130 PetriNetUnfolder]: For 162428/176383 co-relation queries the response was YES. [2022-07-19 21:09:34,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166036 conditions, 49459 events. 27394/49459 cut-off events. For 162428/176383 co-relation queries the response was YES. Maximal size of possible extension queue 3272. Compared 497499 event pairs, 1558 based on Foata normal form. 1137/48712 useless extension candidates. Maximal degree in co-relation 165918. Up to 10456 conditions per place. [2022-07-19 21:09:35,111 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 138 selfloop transitions, 38 changer transitions 0/325 dead transitions. [2022-07-19 21:09:35,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 325 transitions, 2940 flow [2022-07-19 21:09:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-19 21:09:35,115 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-19 21:09:35,115 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-19 21:09:35,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-19 21:09:35,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:35,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-19 21:09:35,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 21:09:35,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:35,123 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:09:35,124 INFO L186 Difference]: Start difference. First operand has 192 places, 196 transitions, 1618 flow. Second operand 13 states and 1600 transitions. [2022-07-19 21:09:35,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 325 transitions, 2940 flow [2022-07-19 21:09:36,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 325 transitions, 2886 flow, removed 27 selfloop flow, removed 1 redundant places. [2022-07-19 21:09:36,576 INFO L242 Difference]: Finished difference. Result has 209 places, 213 transitions, 1797 flow [2022-07-19 21:09:36,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1797, PETRI_PLACES=209, PETRI_TRANSITIONS=213} [2022-07-19 21:09:36,577 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 63 predicate places. [2022-07-19 21:09:36,577 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 213 transitions, 1797 flow [2022-07-19 21:09:36,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 21:09:36,578 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:36,578 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:36,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:09:36,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1101099698, now seen corresponding path program 1 times [2022-07-19 21:09:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:36,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759443875] [2022-07-19 21:09:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:36,696 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 21:09:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759443875] [2022-07-19 21:09:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759443875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:36,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:36,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:09:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715082825] [2022-07-19 21:09:36,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:09:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:09:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:09:36,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:09:36,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 213 transitions, 1797 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 21:09:36,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:36,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:09:36,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:44,809 INFO L129 PetriNetUnfolder]: 26436/47908 cut-off events. [2022-07-19 21:09:44,810 INFO L130 PetriNetUnfolder]: For 229711/243584 co-relation queries the response was YES. [2022-07-19 21:09:45,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190652 conditions, 47908 events. 26436/47908 cut-off events. For 229711/243584 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 486406 event pairs, 1422 based on Foata normal form. 784/46837 useless extension candidates. Maximal degree in co-relation 190526. Up to 10107 conditions per place. [2022-07-19 21:09:45,822 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 131 selfloop transitions, 58 changer transitions 46/365 dead transitions. [2022-07-19 21:09:45,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 365 transitions, 3511 flow [2022-07-19 21:09:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:09:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:09:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1972 transitions. [2022-07-19 21:09:45,828 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-19 21:09:45,828 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1972 transitions. [2022-07-19 21:09:45,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1972 transitions. [2022-07-19 21:09:45,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:45,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1972 transitions. [2022-07-19 21:09:45,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.25) internal successors, (1972), 16 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states 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 21:09:45,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states 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 21:09:45,838 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states 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 21:09:45,838 INFO L186 Difference]: Start difference. First operand has 209 places, 213 transitions, 1797 flow. Second operand 16 states and 1972 transitions. [2022-07-19 21:09:45,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 365 transitions, 3511 flow [2022-07-19 21:09:54,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 365 transitions, 3388 flow, removed 52 selfloop flow, removed 4 redundant places. [2022-07-19 21:09:54,551 INFO L242 Difference]: Finished difference. Result has 221 places, 220 transitions, 1865 flow [2022-07-19 21:09:54,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1865, PETRI_PLACES=221, PETRI_TRANSITIONS=220} [2022-07-19 21:09:54,552 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 75 predicate places. [2022-07-19 21:09:54,552 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 220 transitions, 1865 flow [2022-07-19 21:09:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 21:09:54,553 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:54,553 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:09:54,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 863078961, now seen corresponding path program 1 times [2022-07-19 21:09:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:54,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283575236] [2022-07-19 21:09:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:54,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:54,783 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 21:09:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:54,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283575236] [2022-07-19 21:09:54,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283575236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:54,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:54,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:09:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819938654] [2022-07-19 21:09:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:09:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:09:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:09:54,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 139 [2022-07-19 21:09:54,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 220 transitions, 1865 flow. Second operand has 10 states, 10 states have (on average 112.3) internal successors, (1123), 10 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states 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 21:09:54,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:54,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 139 [2022-07-19 21:09:54,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:59,028 INFO L129 PetriNetUnfolder]: 8816/29363 cut-off events. [2022-07-19 21:09:59,028 INFO L130 PetriNetUnfolder]: For 141017/147848 co-relation queries the response was YES. [2022-07-19 21:09:59,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111290 conditions, 29363 events. 8816/29363 cut-off events. For 141017/147848 co-relation queries the response was YES. Maximal size of possible extension queue 3465. Compared 441205 event pairs, 214 based on Foata normal form. 24/27743 useless extension candidates. Maximal degree in co-relation 111153. Up to 6657 conditions per place. [2022-07-19 21:09:59,627 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 47 selfloop transitions, 18 changer transitions 14/272 dead transitions. [2022-07-19 21:09:59,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 272 transitions, 2319 flow [2022-07-19 21:09:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:09:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:09:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1172 transitions. [2022-07-19 21:09:59,630 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8431654676258993 [2022-07-19 21:09:59,630 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1172 transitions. [2022-07-19 21:09:59,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1172 transitions. [2022-07-19 21:09:59,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:59,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1172 transitions. [2022-07-19 21:09:59,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.2) internal successors, (1172), 10 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 21:09:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:09:59,638 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:09:59,639 INFO L186 Difference]: Start difference. First operand has 221 places, 220 transitions, 1865 flow. Second operand 10 states and 1172 transitions. [2022-07-19 21:09:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 272 transitions, 2319 flow [2022-07-19 21:10:11,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 272 transitions, 1910 flow, removed 162 selfloop flow, removed 22 redundant places. [2022-07-19 21:10:11,989 INFO L242 Difference]: Finished difference. Result has 209 places, 238 transitions, 1727 flow [2022-07-19 21:10:11,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1727, PETRI_PLACES=209, PETRI_TRANSITIONS=238} [2022-07-19 21:10:11,990 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 63 predicate places. [2022-07-19 21:10:11,991 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 238 transitions, 1727 flow [2022-07-19 21:10:11,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 112.3) internal successors, (1123), 10 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states 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 21:10:11,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:11,991 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:10:11,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:10:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1695667209, now seen corresponding path program 2 times [2022-07-19 21:10:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:11,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328544143] [2022-07-19 21:10:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:12,148 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 21:10:12,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:12,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328544143] [2022-07-19 21:10:12,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328544143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:12,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:12,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:10:12,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958093841] [2022-07-19 21:10:12,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:12,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:10:12,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:10:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:10:12,152 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:10:12,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 238 transitions, 1727 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 21:10:12,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:12,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:10:12,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand