./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:07:42,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:07:42,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:07:42,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:07:42,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:07:42,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:07:42,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:07:42,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:07:42,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:07:42,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:07:42,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:07:42,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:07:42,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:07:42,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:07:42,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:07:42,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:07:42,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:07:42,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:07:42,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:07:42,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:07:42,494 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:07:42,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:07:42,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:07:42,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:07:42,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:07:42,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:07:42,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:07:42,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:07:42,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:07:42,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:07:42,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:07:42,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:07:42,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:07:42,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:07:42,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:07:42,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:07:42,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:07:42,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:07:42,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:07:42,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:07:42,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:07:42,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:07:42,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:07:42,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:07:42,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:07:42,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:07:42,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:07:42,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:07:42,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:07:42,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:07:42,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:07:42,535 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:07:42,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:07:42,536 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:07:42,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:07:42,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:07:42,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:07:42,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:07:42,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:07:42,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:07:42,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:07:42,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:07:42,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:42,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:07:42,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:07:42,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:07:42,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:07:42,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:07:42,540 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:07:42,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:07:42,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:07:42,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-07-13 22:07:42,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:07:42,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:07:42,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:07:42,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:07:42,763 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:07:42,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-07-13 22:07:42,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866047a21/5d957b0256e0439eb97291c0d6a281f4/FLAG0fcf60173 [2022-07-13 22:07:43,179 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:07:43,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-07-13 22:07:43,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866047a21/5d957b0256e0439eb97291c0d6a281f4/FLAG0fcf60173 [2022-07-13 22:07:43,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866047a21/5d957b0256e0439eb97291c0d6a281f4 [2022-07-13 22:07:43,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:07:43,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:07:43,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:43,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:07:43,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:07:43,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d5de88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43, skipping insertion in model container [2022-07-13 22:07:43,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:07:43,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:07:43,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-07-13 22:07:43,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:43,751 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:07:43,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-07-13 22:07:43,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:43,810 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:07:43,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43 WrapperNode [2022-07-13 22:07:43,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:43,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:43,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:07:43,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:07:43,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,841 INFO L137 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-07-13 22:07:43,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:43,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:07:43,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:07:43,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:07:43,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:07:43,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:07:43,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:07:43,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:07:43,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (1/1) ... [2022-07-13 22:07:43,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:43,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:07:43,903 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) [2022-07-13 22:07:43,922 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 [2022-07-13 22:07:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:07:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:07:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:07:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:07:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:07:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:07:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:07:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:07:43,934 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:07:43,993 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:07:43,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:07:44,316 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:07:44,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:07:44,326 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 22:07:44,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:44 BoogieIcfgContainer [2022-07-13 22:07:44,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:07:44,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:07:44,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:07:44,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:07:44,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:07:43" (1/3) ... [2022-07-13 22:07:44,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699d782d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:44, skipping insertion in model container [2022-07-13 22:07:44,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:43" (2/3) ... [2022-07-13 22:07:44,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699d782d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:44, skipping insertion in model container [2022-07-13 22:07:44,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:44" (3/3) ... [2022-07-13 22:07:44,343 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-07-13 22:07:44,347 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:07:44,352 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:07:44,353 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:07:44,353 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:07:44,445 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:07:44,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-07-13 22:07:44,565 INFO L129 PetriNetUnfolder]: 28/394 cut-off events. [2022-07-13 22:07:44,565 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:07:44,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 394 events. 28/394 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 926 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2022-07-13 22:07:44,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-07-13 22:07:44,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-07-13 22:07:44,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:07:44,601 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@5ec374fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@482b1db1 [2022-07-13 22:07:44,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:07:44,663 INFO L129 PetriNetUnfolder]: 28/384 cut-off events. [2022-07-13 22:07:44,663 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:07:44,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:44,664 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:44,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:44,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1477167034, now seen corresponding path program 1 times [2022-07-13 22:07:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:44,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468786412] [2022-07-13 22:07:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:44,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:44,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468786412] [2022-07-13 22:07:44,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468786412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:44,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:44,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:07:44,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663149349] [2022-07-13 22:07:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:44,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:07:44,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:07:44,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:07:44,910 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-07-13 22:07:44,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:44,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:44,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-07-13 22:07:44,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:44,980 INFO L129 PetriNetUnfolder]: 5/362 cut-off events. [2022-07-13 22:07:44,981 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-13 22:07:44,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 362 events. 5/362 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 904 event pairs, 0 based on Foata normal form. 29/366 useless extension candidates. Maximal degree in co-relation 254. Up to 5 conditions per place. [2022-07-13 22:07:44,987 INFO L132 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-07-13 22:07:44,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-07-13 22:07:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:07:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:07:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-07-13 22:07:45,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-07-13 22:07:45,007 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-07-13 22:07:45,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-07-13 22:07:45,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:45,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-07-13 22:07:45,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 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) [2022-07-13 22:07:45,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,027 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,028 INFO L186 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-07-13 22:07:45,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-07-13 22:07:45,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:45,041 INFO L242 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-07-13 22:07:45,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=720, PETRI_PLACES=361, PETRI_TRANSITIONS=358} [2022-07-13 22:07:45,045 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-07-13 22:07:45,045 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-07-13 22:07:45,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,046 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:45,047 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:07:45,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash 62130702, now seen corresponding path program 1 times [2022-07-13 22:07:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999169255] [2022-07-13 22:07:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:45,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999169255] [2022-07-13 22:07:45,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999169255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:45,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:45,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:07:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574331637] [2022-07-13 22:07:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:07:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:07:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:07:45,589 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:07:45,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 358 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:45,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:07:45,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:48,685 INFO L129 PetriNetUnfolder]: 4047/15008 cut-off events. [2022-07-13 22:07:48,686 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-07-13 22:07:48,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 15008 events. 4047/15008 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 151045 event pairs, 841 based on Foata normal form. 1/14058 useless extension candidates. Maximal degree in co-relation 22851. Up to 4039 conditions per place. [2022-07-13 22:07:48,760 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-07-13 22:07:48,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-07-13 22:07:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 22:07:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-13 22:07:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-07-13 22:07:48,774 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-07-13 22:07:48,774 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-07-13 22:07:48,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-07-13 22:07:48,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:48,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-07-13 22:07:48,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,816 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,817 INFO L186 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-07-13 22:07:48,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-07-13 22:07:48,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:07:48,829 INFO L242 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-07-13 22:07:48,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1231, PETRI_PLACES=414, PETRI_TRANSITIONS=433} [2022-07-13 22:07:48,831 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-07-13 22:07:48,831 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-07-13 22:07:48,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,833 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:48,833 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:48,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:07:48,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -676524582, now seen corresponding path program 2 times [2022-07-13 22:07:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:48,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883082380] [2022-07-13 22:07:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883082380] [2022-07-13 22:07:49,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883082380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:49,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:49,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:07:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693797363] [2022-07-13 22:07:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:07:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:07:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:07:49,302 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:07:49,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 433 transitions, 1231 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:49,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:49,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:07:49,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:53,142 INFO L129 PetriNetUnfolder]: 4738/17490 cut-off events. [2022-07-13 22:07:53,142 INFO L130 PetriNetUnfolder]: For 6445/6497 co-relation queries the response was YES. [2022-07-13 22:07:53,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33368 conditions, 17490 events. 4738/17490 cut-off events. For 6445/6497 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 181838 event pairs, 1131 based on Foata normal form. 30/16417 useless extension candidates. Maximal degree in co-relation 33338. Up to 4459 conditions per place. [2022-07-13 22:07:53,345 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-07-13 22:07:53,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-07-13 22:07:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 22:07:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-13 22:07:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-07-13 22:07:53,366 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-07-13 22:07:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-07-13 22:07:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-07-13 22:07:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:53,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-07-13 22:07:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 271.219512195122) internal successors, (11120), 41 states have internal predecessors, (11120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,418 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,418 INFO L186 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-07-13 22:07:53,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-07-13 22:07:53,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-07-13 22:07:53,480 INFO L242 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-07-13 22:07:53,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2416, PETRI_PLACES=470, PETRI_TRANSITIONS=546} [2022-07-13 22:07:53,483 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-07-13 22:07:53,483 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-07-13 22:07:53,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,484 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:53,485 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:53,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:07:53,485 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1698579316, now seen corresponding path program 3 times [2022-07-13 22:07:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963945120] [2022-07-13 22:07:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:53,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963945120] [2022-07-13 22:07:53,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963945120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:53,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:53,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:07:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983811289] [2022-07-13 22:07:53,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:07:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:53,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:07:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:07:53,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:07:53,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 546 transitions, 2416 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:53,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:07:53,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:58,029 INFO L129 PetriNetUnfolder]: 4819/17595 cut-off events. [2022-07-13 22:07:58,030 INFO L130 PetriNetUnfolder]: For 16113/16168 co-relation queries the response was YES. [2022-07-13 22:07:58,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38540 conditions, 17595 events. 4819/17595 cut-off events. For 16113/16168 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 183120 event pairs, 823 based on Foata normal form. 40/16578 useless extension candidates. Maximal degree in co-relation 38485. Up to 4583 conditions per place. [2022-07-13 22:07:58,151 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 646 selfloop transitions, 173 changer transitions 17/1082 dead transitions. [2022-07-13 22:07:58,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1082 transitions, 6476 flow [2022-07-13 22:07:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:07:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:07:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 10392 transitions. [2022-07-13 22:07:58,164 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6905901116427432 [2022-07-13 22:07:58,164 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 10392 transitions. [2022-07-13 22:07:58,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 10392 transitions. [2022-07-13 22:07:58,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:58,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 10392 transitions. [2022-07-13 22:07:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 273.4736842105263) internal successors, (10392), 38 states have internal predecessors, (10392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,194 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,195 INFO L186 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 38 states and 10392 transitions. [2022-07-13 22:07:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1082 transitions, 6476 flow [2022-07-13 22:07:58,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1082 transitions, 6150 flow, removed 144 selfloop flow, removed 9 redundant places. [2022-07-13 22:07:58,290 INFO L242 Difference]: Finished difference. Result has 507 places, 596 transitions, 3194 flow [2022-07-13 22:07:58,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3194, PETRI_PLACES=507, PETRI_TRANSITIONS=596} [2022-07-13 22:07:58,291 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 143 predicate places. [2022-07-13 22:07:58,291 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 596 transitions, 3194 flow [2022-07-13 22:07:58,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:58,295 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:07:58,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -665962772, now seen corresponding path program 4 times [2022-07-13 22:07:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521231373] [2022-07-13 22:07:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521231373] [2022-07-13 22:07:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521231373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:07:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207756627] [2022-07-13 22:07:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:58,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:07:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:07:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:07:58,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:07:58,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 596 transitions, 3194 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:58,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:07:58,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:03,370 INFO L129 PetriNetUnfolder]: 5252/19341 cut-off events. [2022-07-13 22:08:03,371 INFO L130 PetriNetUnfolder]: For 20560/20632 co-relation queries the response was YES. [2022-07-13 22:08:03,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43318 conditions, 19341 events. 5252/19341 cut-off events. For 20560/20632 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 203829 event pairs, 849 based on Foata normal form. 39/18199 useless extension candidates. Maximal degree in co-relation 43252. Up to 5413 conditions per place. [2022-07-13 22:08:03,563 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 690 selfloop transitions, 185 changer transitions 16/1137 dead transitions. [2022-07-13 22:08:03,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1137 transitions, 7437 flow [2022-07-13 22:08:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:08:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-13 22:08:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9353 transitions. [2022-07-13 22:08:03,575 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6946672608437314 [2022-07-13 22:08:03,575 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9353 transitions. [2022-07-13 22:08:03,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9353 transitions. [2022-07-13 22:08:03,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:03,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9353 transitions. [2022-07-13 22:08:03,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 275.0882352941176) internal successors, (9353), 34 states have internal predecessors, (9353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:03,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:03,603 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:03,604 INFO L186 Difference]: Start difference. First operand has 507 places, 596 transitions, 3194 flow. Second operand 34 states and 9353 transitions. [2022-07-13 22:08:03,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1137 transitions, 7437 flow [2022-07-13 22:08:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1137 transitions, 7068 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-07-13 22:08:03,750 INFO L242 Difference]: Finished difference. Result has 545 places, 702 transitions, 4555 flow [2022-07-13 22:08:03,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4555, PETRI_PLACES=545, PETRI_TRANSITIONS=702} [2022-07-13 22:08:03,752 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 181 predicate places. [2022-07-13 22:08:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 702 transitions, 4555 flow [2022-07-13 22:08:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:03,754 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:03,754 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:03,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:08:03,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1914444500, now seen corresponding path program 5 times [2022-07-13 22:08:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:03,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104295446] [2022-07-13 22:08:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:04,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104295446] [2022-07-13 22:08:04,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104295446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:04,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:04,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:08:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653597553] [2022-07-13 22:08:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:04,071 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:08:04,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 702 transitions, 4555 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:04,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:04,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:08:04,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:09,526 INFO L129 PetriNetUnfolder]: 5591/20970 cut-off events. [2022-07-13 22:08:09,526 INFO L130 PetriNetUnfolder]: For 34081/34214 co-relation queries the response was YES. [2022-07-13 22:08:09,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52169 conditions, 20970 events. 5591/20970 cut-off events. For 34081/34214 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 225499 event pairs, 949 based on Foata normal form. 74/19738 useless extension candidates. Maximal degree in co-relation 52078. Up to 5416 conditions per place. [2022-07-13 22:08:09,862 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 764 selfloop transitions, 267 changer transitions 17/1294 dead transitions. [2022-07-13 22:08:09,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1294 transitions, 10100 flow [2022-07-13 22:08:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 22:08:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-13 22:08:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11202 transitions. [2022-07-13 22:08:09,871 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6899482631189948 [2022-07-13 22:08:09,871 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11202 transitions. [2022-07-13 22:08:09,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11202 transitions. [2022-07-13 22:08:09,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:09,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11202 transitions. [2022-07-13 22:08:09,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 273.219512195122) internal successors, (11202), 41 states have internal predecessors, (11202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,898 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,899 INFO L186 Difference]: Start difference. First operand has 545 places, 702 transitions, 4555 flow. Second operand 41 states and 11202 transitions. [2022-07-13 22:08:09,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1294 transitions, 10100 flow [2022-07-13 22:08:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1294 transitions, 9623 flow, removed 215 selfloop flow, removed 8 redundant places. [2022-07-13 22:08:10,212 INFO L242 Difference]: Finished difference. Result has 594 places, 803 transitions, 6223 flow [2022-07-13 22:08:10,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6223, PETRI_PLACES=594, PETRI_TRANSITIONS=803} [2022-07-13 22:08:10,213 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 230 predicate places. [2022-07-13 22:08:10,214 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 803 transitions, 6223 flow [2022-07-13 22:08:10,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:10,215 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:10,215 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:08:10,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1134351494, now seen corresponding path program 6 times [2022-07-13 22:08:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:10,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55195254] [2022-07-13 22:08:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:10,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55195254] [2022-07-13 22:08:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55195254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:10,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:10,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:08:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495595028] [2022-07-13 22:08:10,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:10,460 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:08:10,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 803 transitions, 6223 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:10,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:10,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:08:10,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:17,340 INFO L129 PetriNetUnfolder]: 5843/21621 cut-off events. [2022-07-13 22:08:17,340 INFO L130 PetriNetUnfolder]: For 44184/44385 co-relation queries the response was YES. [2022-07-13 22:08:17,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56749 conditions, 21621 events. 5843/21621 cut-off events. For 44184/44385 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 234892 event pairs, 803 based on Foata normal form. 133/20480 useless extension candidates. Maximal degree in co-relation 56641. Up to 5454 conditions per place. [2022-07-13 22:08:17,685 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 695 selfloop transitions, 358 changer transitions 17/1316 dead transitions. [2022-07-13 22:08:17,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1316 transitions, 11438 flow [2022-07-13 22:08:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:08:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:08:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11693 transitions. [2022-07-13 22:08:17,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6866925064599483 [2022-07-13 22:08:17,693 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11693 transitions. [2022-07-13 22:08:17,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11693 transitions. [2022-07-13 22:08:17,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:17,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11693 transitions. [2022-07-13 22:08:17,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 271.93023255813955) internal successors, (11693), 43 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,718 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,719 INFO L186 Difference]: Start difference. First operand has 594 places, 803 transitions, 6223 flow. Second operand 43 states and 11693 transitions. [2022-07-13 22:08:17,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1316 transitions, 11438 flow [2022-07-13 22:08:18,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1316 transitions, 10969 flow, removed 134 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:18,142 INFO L242 Difference]: Finished difference. Result has 635 places, 886 transitions, 7873 flow [2022-07-13 22:08:18,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=7873, PETRI_PLACES=635, PETRI_TRANSITIONS=886} [2022-07-13 22:08:18,143 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 271 predicate places. [2022-07-13 22:08:18,144 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 886 transitions, 7873 flow [2022-07-13 22:08:18,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:18,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:18,145 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:08:18,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1164770556, now seen corresponding path program 7 times [2022-07-13 22:08:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660737805] [2022-07-13 22:08:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660737805] [2022-07-13 22:08:18,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660737805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:18,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:18,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:08:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139379997] [2022-07-13 22:08:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:18,409 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:08:18,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 886 transitions, 7873 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:18,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:18,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:08:18,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:25,421 INFO L129 PetriNetUnfolder]: 6158/23009 cut-off events. [2022-07-13 22:08:25,421 INFO L130 PetriNetUnfolder]: For 60461/60677 co-relation queries the response was YES. [2022-07-13 22:08:25,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63574 conditions, 23009 events. 6158/23009 cut-off events. For 60461/60677 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 253327 event pairs, 955 based on Foata normal form. 142/21767 useless extension candidates. Maximal degree in co-relation 63450. Up to 6072 conditions per place. [2022-07-13 22:08:25,786 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 828 selfloop transitions, 322 changer transitions 22/1418 dead transitions. [2022-07-13 22:08:25,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 1418 transitions, 13494 flow [2022-07-13 22:08:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-13 22:08:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-13 22:08:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 10921 transitions. [2022-07-13 22:08:25,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6894570707070707 [2022-07-13 22:08:25,795 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 10921 transitions. [2022-07-13 22:08:25,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 10921 transitions. [2022-07-13 22:08:25,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:25,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 10921 transitions. [2022-07-13 22:08:25,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 273.025) internal successors, (10921), 40 states have internal predecessors, (10921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 396.0) internal successors, (16236), 41 states have internal predecessors, (16236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,814 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 396.0) internal successors, (16236), 41 states have internal predecessors, (16236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,814 INFO L186 Difference]: Start difference. First operand has 635 places, 886 transitions, 7873 flow. Second operand 40 states and 10921 transitions. [2022-07-13 22:08:25,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 1418 transitions, 13494 flow [2022-07-13 22:08:26,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 1418 transitions, 12891 flow, removed 124 selfloop flow, removed 18 redundant places. [2022-07-13 22:08:26,380 INFO L242 Difference]: Finished difference. Result has 676 places, 987 transitions, 9540 flow [2022-07-13 22:08:26,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=7342, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=9540, PETRI_PLACES=676, PETRI_TRANSITIONS=987} [2022-07-13 22:08:26,382 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 312 predicate places. [2022-07-13 22:08:26,382 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 987 transitions, 9540 flow [2022-07-13 22:08:26,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:26,383 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:26,383 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:08:26,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 524788034, now seen corresponding path program 8 times [2022-07-13 22:08:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:26,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483180166] [2022-07-13 22:08:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:26,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483180166] [2022-07-13 22:08:26,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483180166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:26,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:26,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:08:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472079672] [2022-07-13 22:08:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:26,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:08:26,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 987 transitions, 9540 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:26,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:26,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:08:26,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:34,587 INFO L129 PetriNetUnfolder]: 6675/24890 cut-off events. [2022-07-13 22:08:34,587 INFO L130 PetriNetUnfolder]: For 89906/90232 co-relation queries the response was YES. [2022-07-13 22:08:34,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75284 conditions, 24890 events. 6675/24890 cut-off events. For 89906/90232 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 279727 event pairs, 938 based on Foata normal form. 205/23640 useless extension candidates. Maximal degree in co-relation 75137. Up to 6252 conditions per place. [2022-07-13 22:08:35,116 INFO L132 encePairwiseOnDemand]: 354/396 looper letters, 937 selfloop transitions, 392 changer transitions 17/1592 dead transitions. [2022-07-13 22:08:35,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 1592 transitions, 16731 flow [2022-07-13 22:08:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:08:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:08:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11732 transitions. [2022-07-13 22:08:35,123 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6889828517735495 [2022-07-13 22:08:35,124 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11732 transitions. [2022-07-13 22:08:35,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11732 transitions. [2022-07-13 22:08:35,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:35,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11732 transitions. [2022-07-13 22:08:35,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 272.83720930232556) internal successors, (11732), 43 states have internal predecessors, (11732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:35,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:35,145 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:35,145 INFO L186 Difference]: Start difference. First operand has 676 places, 987 transitions, 9540 flow. Second operand 43 states and 11732 transitions. [2022-07-13 22:08:35,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 1592 transitions, 16731 flow [2022-07-13 22:08:36,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 1592 transitions, 15975 flow, removed 231 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:36,056 INFO L242 Difference]: Finished difference. Result has 725 places, 1104 transitions, 12016 flow [2022-07-13 22:08:36,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=12016, PETRI_PLACES=725, PETRI_TRANSITIONS=1104} [2022-07-13 22:08:36,057 INFO L279 CegarLoopForPetriNet]: 364 programPoint places, 361 predicate places. [2022-07-13 22:08:36,057 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 1104 transitions, 12016 flow [2022-07-13 22:08:36,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:36,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:36,058 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:36,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:08:36,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash -487331040, now seen corresponding path program 9 times [2022-07-13 22:08:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:36,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349179349] [2022-07-13 22:08:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:36,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:36,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349179349] [2022-07-13 22:08:36,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349179349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:36,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:36,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:08:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323094177] [2022-07-13 22:08:36,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:36,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:36,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:36,364 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-07-13 22:08:36,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 1104 transitions, 12016 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:36,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:36,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-07-13 22:08:36,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand