./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-commit-2.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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:30:16,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:30:16,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:30:16,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:30:16,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:30:16,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:30:16,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:30:16,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:30:16,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:30:16,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:30:16,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:30:16,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:30:16,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:30:16,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:30:16,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:30:16,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:30:16,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:30:16,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:30:16,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:30:16,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:30:16,646 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:30:16,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:30:16,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:30:16,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:30:16,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:30:16,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:30:16,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:30:16,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:30:16,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:30:16,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:30:16,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:30:16,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:30:16,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:30:16,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:30:16,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:30:16,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:30:16,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:30:16,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:30:16,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:30:16,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:30:16,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:30:16,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:30:16,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:30:16,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:30:16,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:30:16,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:30:16,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:30:16,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:30:16,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:30:16,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:30:16,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:30:16,695 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:30:16,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:30:16,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:30:16,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:30:16,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:30:16,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:30:16,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:30:16,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:30:16,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:30:16,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:30:16,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:30:16,700 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:30:16,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:30:16,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:30:16,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-07-12 10:30:16,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:30:16,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:30:16,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:30:16,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:30:16,930 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:30:16,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-07-12 10:30:16,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081b67f8/c0db1ca5b67f40518902c0f548fe65b9/FLAG2a61c84ea [2022-07-12 10:30:17,363 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:30:17,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-07-12 10:30:17,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081b67f8/c0db1ca5b67f40518902c0f548fe65b9/FLAG2a61c84ea [2022-07-12 10:30:17,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081b67f8/c0db1ca5b67f40518902c0f548fe65b9 [2022-07-12 10:30:17,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:30:17,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:30:17,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:30:17,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:30:17,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:30:17,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd7cdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17, skipping insertion in model container [2022-07-12 10:30:17,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:30:17,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:30:17,550 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/popl20-commit-2.wvr.c[5846,5859] [2022-07-12 10:30:17,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:30:17,561 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:30:17,588 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/popl20-commit-2.wvr.c[5846,5859] [2022-07-12 10:30:17,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:30:17,604 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:30:17,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17 WrapperNode [2022-07-12 10:30:17,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:30:17,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:30:17,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:30:17,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:30:17,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,656 INFO L137 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 456 [2022-07-12 10:30:17,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:30:17,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:30:17,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:30:17,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:30:17,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:30:17,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:30:17,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:30:17,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:30:17,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (1/1) ... [2022-07-12 10:30:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:30:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:30:17,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:30:17,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:30:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:30:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:30:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:30:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:30:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:30:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:30:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:30:17,798 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:30:17,905 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:30:17,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:30:18,433 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:30:18,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:30:18,636 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 10:30:18,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:30:18 BoogieIcfgContainer [2022-07-12 10:30:18,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:30:18,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:30:18,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:30:18,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:30:18,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:30:17" (1/3) ... [2022-07-12 10:30:18,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f34151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:30:18, skipping insertion in model container [2022-07-12 10:30:18,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:30:17" (2/3) ... [2022-07-12 10:30:18,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f34151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:30:18, skipping insertion in model container [2022-07-12 10:30:18,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:30:18" (3/3) ... [2022-07-12 10:30:18,645 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-07-12 10:30:18,649 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:30:18,656 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:30:18,656 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:30:18,656 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:30:18,739 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:30:18,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 316 places, 328 transitions, 688 flow [2022-07-12 10:30:18,913 INFO L129 PetriNetUnfolder]: 25/324 cut-off events. [2022-07-12 10:30:18,913 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:30:18,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 324 events. 25/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 284. Up to 2 conditions per place. [2022-07-12 10:30:18,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 328 transitions, 688 flow [2022-07-12 10:30:18,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 311 transitions, 646 flow [2022-07-12 10:30:18,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:30:18,949 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@65d5b001, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e6a8a38 [2022-07-12 10:30:18,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:30:18,986 INFO L129 PetriNetUnfolder]: 25/310 cut-off events. [2022-07-12 10:30:18,986 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:30:18,986 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:18,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:18,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -193289297, now seen corresponding path program 1 times [2022-07-12 10:30:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828471100] [2022-07-12 10:30:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:19,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:30:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828471100] [2022-07-12 10:30:19,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828471100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:19,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:19,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:30:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318123012] [2022-07-12 10:30:19,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:19,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:30:19,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:30:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:30:19,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 328 [2022-07-12 10:30:19,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 311 transitions, 646 flow. Second operand has 2 states, 2 states have (on average 296.0) internal successors, (592), 2 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:19,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 328 [2022-07-12 10:30:19,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:19,501 INFO L129 PetriNetUnfolder]: 285/660 cut-off events. [2022-07-12 10:30:19,501 INFO L130 PetriNetUnfolder]: For 89/90 co-relation queries the response was YES. [2022-07-12 10:30:19,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 660 events. 285/660 cut-off events. For 89/90 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1603 event pairs, 147 based on Foata normal form. 147/776 useless extension candidates. Maximal degree in co-relation 831. Up to 387 conditions per place. [2022-07-12 10:30:19,508 INFO L132 encePairwiseOnDemand]: 311/328 looper letters, 20 selfloop transitions, 0 changer transitions 9/294 dead transitions. [2022-07-12 10:30:19,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 294 transitions, 652 flow [2022-07-12 10:30:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:30:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:30:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 617 transitions. [2022-07-12 10:30:19,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9405487804878049 [2022-07-12 10:30:19,525 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 617 transitions. [2022-07-12 10:30:19,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 617 transitions. [2022-07-12 10:30:19,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:19,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 617 transitions. [2022-07-12 10:30:19,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 308.5) internal successors, (617), 2 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,542 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,543 INFO L186 Difference]: Start difference. First operand has 299 places, 311 transitions, 646 flow. Second operand 2 states and 617 transitions. [2022-07-12 10:30:19,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 294 transitions, 652 flow [2022-07-12 10:30:19,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 294 transitions, 636 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:30:19,554 INFO L242 Difference]: Finished difference. Result has 292 places, 285 transitions, 578 flow [2022-07-12 10:30:19,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=578, PETRI_PLACES=292, PETRI_TRANSITIONS=285} [2022-07-12 10:30:19,561 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -7 predicate places. [2022-07-12 10:30:19,561 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 285 transitions, 578 flow [2022-07-12 10:30:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 296.0) internal successors, (592), 2 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,562 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:19,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:19,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:30:19,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -276169371, now seen corresponding path program 1 times [2022-07-12 10:30:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:19,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866700207] [2022-07-12 10:30:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:30:19,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:19,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866700207] [2022-07-12 10:30:19,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866700207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:19,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:19,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:30:19,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629086126] [2022-07-12 10:30:19,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:19,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:30:19,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:30:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:30:19,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 328 [2022-07-12 10:30:19,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 285 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 252.2) internal successors, (1261), 5 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:19,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:19,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 328 [2022-07-12 10:30:19,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:20,060 INFO L129 PetriNetUnfolder]: 309/798 cut-off events. [2022-07-12 10:30:20,060 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:30:20,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 798 events. 309/798 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2523 event pairs, 125 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 1307. Up to 413 conditions per place. [2022-07-12 10:30:20,067 INFO L132 encePairwiseOnDemand]: 320/328 looper letters, 64 selfloop transitions, 5 changer transitions 4/300 dead transitions. [2022-07-12 10:30:20,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 300 transitions, 761 flow [2022-07-12 10:30:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:30:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:30:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1289 transitions. [2022-07-12 10:30:20,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7859756097560976 [2022-07-12 10:30:20,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1289 transitions. [2022-07-12 10:30:20,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1289 transitions. [2022-07-12 10:30:20,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:20,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1289 transitions. [2022-07-12 10:30:20,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,077 INFO L186 Difference]: Start difference. First operand has 292 places, 285 transitions, 578 flow. Second operand 5 states and 1289 transitions. [2022-07-12 10:30:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 300 transitions, 761 flow [2022-07-12 10:30:20,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 300 transitions, 761 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:30:20,084 INFO L242 Difference]: Finished difference. Result has 290 places, 289 transitions, 615 flow [2022-07-12 10:30:20,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-07-12 10:30:20,085 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -9 predicate places. [2022-07-12 10:30:20,085 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 615 flow [2022-07-12 10:30:20,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.2) internal successors, (1261), 5 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:20,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:30:20,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash -901658663, now seen corresponding path program 1 times [2022-07-12 10:30:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:20,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061285052] [2022-07-12 10:30:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:30:20,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061285052] [2022-07-12 10:30:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061285052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:20,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:20,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:30:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109626190] [2022-07-12 10:30:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:30:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:30:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:30:20,251 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 328 [2022-07-12 10:30:20,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:20,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 328 [2022-07-12 10:30:20,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:20,499 INFO L129 PetriNetUnfolder]: 323/953 cut-off events. [2022-07-12 10:30:20,500 INFO L130 PetriNetUnfolder]: For 118/119 co-relation queries the response was YES. [2022-07-12 10:30:20,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 953 events. 323/953 cut-off events. For 118/119 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2938 event pairs, 148 based on Foata normal form. 36/945 useless extension candidates. Maximal degree in co-relation 1754. Up to 459 conditions per place. [2022-07-12 10:30:20,505 INFO L132 encePairwiseOnDemand]: 315/328 looper letters, 70 selfloop transitions, 8 changer transitions 49/342 dead transitions. [2022-07-12 10:30:20,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 342 transitions, 993 flow [2022-07-12 10:30:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:30:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:30:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2285 transitions. [2022-07-12 10:30:20,510 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7740514905149052 [2022-07-12 10:30:20,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2285 transitions. [2022-07-12 10:30:20,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2285 transitions. [2022-07-12 10:30:20,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:20,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2285 transitions. [2022-07-12 10:30:20,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 253.88888888888889) internal successors, (2285), 9 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,520 INFO L186 Difference]: Start difference. First operand has 290 places, 289 transitions, 615 flow. Second operand 9 states and 2285 transitions. [2022-07-12 10:30:20,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 342 transitions, 993 flow [2022-07-12 10:30:20,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 342 transitions, 982 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:30:20,526 INFO L242 Difference]: Finished difference. Result has 295 places, 290 transitions, 642 flow [2022-07-12 10:30:20,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=295, PETRI_TRANSITIONS=290} [2022-07-12 10:30:20,527 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -4 predicate places. [2022-07-12 10:30:20,527 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 642 flow [2022-07-12 10:30:20,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,528 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:20,528 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:30:20,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:20,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1267572556, now seen corresponding path program 1 times [2022-07-12 10:30:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:20,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398971674] [2022-07-12 10:30:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:30:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398971674] [2022-07-12 10:30:20,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398971674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:20,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:20,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:30:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674823524] [2022-07-12 10:30:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:30:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:30:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:30:20,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 328 [2022-07-12 10:30:20,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 290 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:20,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 328 [2022-07-12 10:30:20,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:20,852 INFO L129 PetriNetUnfolder]: 347/866 cut-off events. [2022-07-12 10:30:20,853 INFO L130 PetriNetUnfolder]: For 262/263 co-relation queries the response was YES. [2022-07-12 10:30:20,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 866 events. 347/866 cut-off events. For 262/263 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2809 event pairs, 65 based on Foata normal form. 23/855 useless extension candidates. Maximal degree in co-relation 1768. Up to 396 conditions per place. [2022-07-12 10:30:20,857 INFO L132 encePairwiseOnDemand]: 321/328 looper letters, 37 selfloop transitions, 6 changer transitions 0/302 dead transitions. [2022-07-12 10:30:20,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 302 transitions, 769 flow [2022-07-12 10:30:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:30:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:30:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-07-12 10:30:20,860 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8940548780487805 [2022-07-12 10:30:20,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-07-12 10:30:20,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-07-12 10:30:20,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:20,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-07-12 10:30:20,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,865 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,865 INFO L186 Difference]: Start difference. First operand has 295 places, 290 transitions, 642 flow. Second operand 4 states and 1173 transitions. [2022-07-12 10:30:20,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 302 transitions, 769 flow [2022-07-12 10:30:20,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 302 transitions, 755 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:30:20,869 INFO L242 Difference]: Finished difference. Result has 292 places, 290 transitions, 644 flow [2022-07-12 10:30:20,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=644, PETRI_PLACES=292, PETRI_TRANSITIONS=290} [2022-07-12 10:30:20,870 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -7 predicate places. [2022-07-12 10:30:20,870 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 290 transitions, 644 flow [2022-07-12 10:30:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:20,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:30:20,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash 666372820, now seen corresponding path program 1 times [2022-07-12 10:30:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:20,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900553352] [2022-07-12 10:30:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:30:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:20,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900553352] [2022-07-12 10:30:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900553352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:20,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:20,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:30:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658930388] [2022-07-12 10:30:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:30:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:20,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:30:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:30:20,963 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-07-12 10:30:20,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 290 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:20,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:20,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-07-12 10:30:20,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:21,113 INFO L129 PetriNetUnfolder]: 326/837 cut-off events. [2022-07-12 10:30:21,113 INFO L130 PetriNetUnfolder]: For 315/316 co-relation queries the response was YES. [2022-07-12 10:30:21,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 837 events. 326/837 cut-off events. For 315/316 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2714 event pairs, 56 based on Foata normal form. 22/829 useless extension candidates. Maximal degree in co-relation 1757. Up to 398 conditions per place. [2022-07-12 10:30:21,118 INFO L132 encePairwiseOnDemand]: 325/328 looper letters, 38 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-07-12 10:30:21,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 302 transitions, 767 flow [2022-07-12 10:30:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:30:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:30:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2022-07-12 10:30:21,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9115853658536586 [2022-07-12 10:30:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2022-07-12 10:30:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2022-07-12 10:30:21,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:21,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2022-07-12 10:30:21,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,126 INFO L186 Difference]: Start difference. First operand has 292 places, 290 transitions, 644 flow. Second operand 3 states and 897 transitions. [2022-07-12 10:30:21,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 302 transitions, 767 flow [2022-07-12 10:30:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 302 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:30:21,132 INFO L242 Difference]: Finished difference. Result has 293 places, 290 transitions, 642 flow [2022-07-12 10:30:21,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2022-07-12 10:30:21,135 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -6 predicate places. [2022-07-12 10:30:21,135 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 642 flow [2022-07-12 10:30:21,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:21,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:21,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:30:21,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1221919080, now seen corresponding path program 1 times [2022-07-12 10:30:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:21,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717410747] [2022-07-12 10:30:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:30:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717410747] [2022-07-12 10:30:21,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717410747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:21,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:21,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:30:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914022438] [2022-07-12 10:30:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:30:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:30:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:30:21,358 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 328 [2022-07-12 10:30:21,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:21,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 328 [2022-07-12 10:30:21,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:21,535 INFO L129 PetriNetUnfolder]: 422/985 cut-off events. [2022-07-12 10:30:21,535 INFO L130 PetriNetUnfolder]: For 536/537 co-relation queries the response was YES. [2022-07-12 10:30:21,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 985 events. 422/985 cut-off events. For 536/537 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3618 event pairs, 80 based on Foata normal form. 19/973 useless extension candidates. Maximal degree in co-relation 2237. Up to 403 conditions per place. [2022-07-12 10:30:21,542 INFO L132 encePairwiseOnDemand]: 321/328 looper letters, 35 selfloop transitions, 6 changer transitions 4/304 dead transitions. [2022-07-12 10:30:21,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 304 transitions, 779 flow [2022-07-12 10:30:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:30:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:30:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1178 transitions. [2022-07-12 10:30:21,544 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8978658536585366 [2022-07-12 10:30:21,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1178 transitions. [2022-07-12 10:30:21,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1178 transitions. [2022-07-12 10:30:21,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:21,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1178 transitions. [2022-07-12 10:30:21,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,549 INFO L186 Difference]: Start difference. First operand has 293 places, 290 transitions, 642 flow. Second operand 4 states and 1178 transitions. [2022-07-12 10:30:21,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 304 transitions, 779 flow [2022-07-12 10:30:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 304 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:30:21,553 INFO L242 Difference]: Finished difference. Result has 296 places, 290 transitions, 656 flow [2022-07-12 10:30:21,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=656, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2022-07-12 10:30:21,554 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, -3 predicate places. [2022-07-12 10:30:21,554 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 656 flow [2022-07-12 10:30:21,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:21,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:30:21,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 74120406, now seen corresponding path program 1 times [2022-07-12 10:30:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231817269] [2022-07-12 10:30:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:21,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:30:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:21,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231817269] [2022-07-12 10:30:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231817269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:21,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:30:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511068703] [2022-07-12 10:30:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:30:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:30:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:30:21,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 328 [2022-07-12 10:30:21,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 656 flow. Second operand has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:21,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 328 [2022-07-12 10:30:21,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:21,904 INFO L129 PetriNetUnfolder]: 547/1256 cut-off events. [2022-07-12 10:30:21,904 INFO L130 PetriNetUnfolder]: For 629/631 co-relation queries the response was YES. [2022-07-12 10:30:21,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 1256 events. 547/1256 cut-off events. For 629/631 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4682 event pairs, 321 based on Foata normal form. 15/1230 useless extension candidates. Maximal degree in co-relation 3057. Up to 619 conditions per place. [2022-07-12 10:30:21,912 INFO L132 encePairwiseOnDemand]: 318/328 looper letters, 71 selfloop transitions, 8 changer transitions 43/337 dead transitions. [2022-07-12 10:30:21,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 337 transitions, 1024 flow [2022-07-12 10:30:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:30:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:30:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2278 transitions. [2022-07-12 10:30:21,916 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.771680216802168 [2022-07-12 10:30:21,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2278 transitions. [2022-07-12 10:30:21,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2278 transitions. [2022-07-12 10:30:21,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:21,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2278 transitions. [2022-07-12 10:30:21,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 253.11111111111111) internal successors, (2278), 9 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,924 INFO L186 Difference]: Start difference. First operand has 296 places, 290 transitions, 656 flow. Second operand 9 states and 2278 transitions. [2022-07-12 10:30:21,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 337 transitions, 1024 flow [2022-07-12 10:30:21,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 337 transitions, 1014 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:30:21,929 INFO L242 Difference]: Finished difference. Result has 304 places, 291 transitions, 674 flow [2022-07-12 10:30:21,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=674, PETRI_PLACES=304, PETRI_TRANSITIONS=291} [2022-07-12 10:30:21,930 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 5 predicate places. [2022-07-12 10:30:21,930 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 291 transitions, 674 flow [2022-07-12 10:30:21,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:21,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:21,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:30:21,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1437007287, now seen corresponding path program 1 times [2022-07-12 10:30:21,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809674213] [2022-07-12 10:30:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:30:22,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809674213] [2022-07-12 10:30:22,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809674213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:22,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:22,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:30:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920432327] [2022-07-12 10:30:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:22,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:30:22,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:30:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:30:22,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 328 [2022-07-12 10:30:22,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 291 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:22,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 328 [2022-07-12 10:30:22,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:22,251 INFO L129 PetriNetUnfolder]: 430/1051 cut-off events. [2022-07-12 10:30:22,251 INFO L130 PetriNetUnfolder]: For 544/546 co-relation queries the response was YES. [2022-07-12 10:30:22,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 1051 events. 430/1051 cut-off events. For 544/546 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3650 event pairs, 248 based on Foata normal form. 5/1023 useless extension candidates. Maximal degree in co-relation 2498. Up to 607 conditions per place. [2022-07-12 10:30:22,259 INFO L132 encePairwiseOnDemand]: 318/328 looper letters, 72 selfloop transitions, 8 changer transitions 23/318 dead transitions. [2022-07-12 10:30:22,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 318 transitions, 948 flow [2022-07-12 10:30:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:30:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:30:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2258 transitions. [2022-07-12 10:30:22,263 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649051490514905 [2022-07-12 10:30:22,263 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2258 transitions. [2022-07-12 10:30:22,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2258 transitions. [2022-07-12 10:30:22,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:22,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2258 transitions. [2022-07-12 10:30:22,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.88888888888889) internal successors, (2258), 9 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,271 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,271 INFO L186 Difference]: Start difference. First operand has 304 places, 291 transitions, 674 flow. Second operand 9 states and 2258 transitions. [2022-07-12 10:30:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 318 transitions, 948 flow [2022-07-12 10:30:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 318 transitions, 930 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-07-12 10:30:22,276 INFO L242 Difference]: Finished difference. Result has 306 places, 292 transitions, 684 flow [2022-07-12 10:30:22,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=684, PETRI_PLACES=306, PETRI_TRANSITIONS=292} [2022-07-12 10:30:22,277 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 7 predicate places. [2022-07-12 10:30:22,278 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 292 transitions, 684 flow [2022-07-12 10:30:22,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,278 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:22,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:30:22,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 258650456, now seen corresponding path program 1 times [2022-07-12 10:30:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377396530] [2022-07-12 10:30:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:30:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377396530] [2022-07-12 10:30:22,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377396530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:22,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:22,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:30:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371259169] [2022-07-12 10:30:22,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:22,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:30:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:30:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:30:22,358 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 328 [2022-07-12 10:30:22,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 292 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:22,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 328 [2022-07-12 10:30:22,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:22,575 INFO L129 PetriNetUnfolder]: 440/1036 cut-off events. [2022-07-12 10:30:22,575 INFO L130 PetriNetUnfolder]: For 541/543 co-relation queries the response was YES. [2022-07-12 10:30:22,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1036 events. 440/1036 cut-off events. For 541/543 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3640 event pairs, 255 based on Foata normal form. 9/1011 useless extension candidates. Maximal degree in co-relation 2517. Up to 604 conditions per place. [2022-07-12 10:30:22,582 INFO L132 encePairwiseOnDemand]: 320/328 looper letters, 75 selfloop transitions, 6 changer transitions 14/310 dead transitions. [2022-07-12 10:30:22,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 310 transitions, 934 flow [2022-07-12 10:30:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:30:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:30:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1769 transitions. [2022-07-12 10:30:22,585 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7704703832752613 [2022-07-12 10:30:22,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1769 transitions. [2022-07-12 10:30:22,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1769 transitions. [2022-07-12 10:30:22,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:22,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1769 transitions. [2022-07-12 10:30:22,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 252.71428571428572) internal successors, (1769), 7 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 328.0) internal successors, (2624), 8 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 328.0) internal successors, (2624), 8 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,592 INFO L186 Difference]: Start difference. First operand has 306 places, 292 transitions, 684 flow. Second operand 7 states and 1769 transitions. [2022-07-12 10:30:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 310 transitions, 934 flow [2022-07-12 10:30:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 310 transitions, 914 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-12 10:30:22,597 INFO L242 Difference]: Finished difference. Result has 306 places, 293 transitions, 688 flow [2022-07-12 10:30:22,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=306, PETRI_TRANSITIONS=293} [2022-07-12 10:30:22,598 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 7 predicate places. [2022-07-12 10:30:22,598 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 293 transitions, 688 flow [2022-07-12 10:30:22,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,599 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:22,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:30:22,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:22,600 INFO L85 PathProgramCache]: Analyzing trace with hash 638402855, now seen corresponding path program 1 times [2022-07-12 10:30:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:22,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619333182] [2022-07-12 10:30:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:30:22,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619333182] [2022-07-12 10:30:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619333182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:22,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:22,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:30:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518096000] [2022-07-12 10:30:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:30:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:30:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:30:22,721 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-07-12 10:30:22,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 293 transitions, 688 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:22,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-07-12 10:30:22,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:22,837 INFO L129 PetriNetUnfolder]: 212/717 cut-off events. [2022-07-12 10:30:22,837 INFO L130 PetriNetUnfolder]: For 399/407 co-relation queries the response was YES. [2022-07-12 10:30:22,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 717 events. 212/717 cut-off events. For 399/407 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2069 event pairs, 95 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 1411. Up to 294 conditions per place. [2022-07-12 10:30:22,842 INFO L132 encePairwiseOnDemand]: 325/328 looper letters, 27 selfloop transitions, 2 changer transitions 4/298 dead transitions. [2022-07-12 10:30:22,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 298 transitions, 770 flow [2022-07-12 10:30:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:30:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:30:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2022-07-12 10:30:22,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9024390243902439 [2022-07-12 10:30:22,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2022-07-12 10:30:22,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2022-07-12 10:30:22,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:22,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2022-07-12 10:30:22,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,848 INFO L186 Difference]: Start difference. First operand has 306 places, 293 transitions, 688 flow. Second operand 3 states and 888 transitions. [2022-07-12 10:30:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 298 transitions, 770 flow [2022-07-12 10:30:22,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 298 transitions, 758 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-07-12 10:30:22,853 INFO L242 Difference]: Finished difference. Result has 303 places, 294 transitions, 690 flow [2022-07-12 10:30:22,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=303, PETRI_TRANSITIONS=294} [2022-07-12 10:30:22,854 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 4 predicate places. [2022-07-12 10:30:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 294 transitions, 690 flow [2022-07-12 10:30:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,854 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:22,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:30:22,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash 11618553, now seen corresponding path program 1 times [2022-07-12 10:30:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:22,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144381342] [2022-07-12 10:30:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:30:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144381342] [2022-07-12 10:30:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144381342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:22,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:30:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139303063] [2022-07-12 10:30:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:30:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:30:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:30:22,980 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-07-12 10:30:22,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 294 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:22,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:22,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-07-12 10:30:22,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:23,228 INFO L129 PetriNetUnfolder]: 588/1631 cut-off events. [2022-07-12 10:30:23,228 INFO L130 PetriNetUnfolder]: For 1263/1301 co-relation queries the response was YES. [2022-07-12 10:30:23,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3655 conditions, 1631 events. 588/1631 cut-off events. For 1263/1301 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8309 event pairs, 138 based on Foata normal form. 28/1549 useless extension candidates. Maximal degree in co-relation 3641. Up to 387 conditions per place. [2022-07-12 10:30:23,241 INFO L132 encePairwiseOnDemand]: 321/328 looper letters, 50 selfloop transitions, 12 changer transitions 0/327 dead transitions. [2022-07-12 10:30:23,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 327 transitions, 952 flow [2022-07-12 10:30:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:30:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:30:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1200 transitions. [2022-07-12 10:30:23,244 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146341463414634 [2022-07-12 10:30:23,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1200 transitions. [2022-07-12 10:30:23,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1200 transitions. [2022-07-12 10:30:23,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:23,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1200 transitions. [2022-07-12 10:30:23,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:23,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:23,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:23,248 INFO L186 Difference]: Start difference. First operand has 303 places, 294 transitions, 690 flow. Second operand 4 states and 1200 transitions. [2022-07-12 10:30:23,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 327 transitions, 952 flow [2022-07-12 10:30:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 327 transitions, 948 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:30:23,253 INFO L242 Difference]: Finished difference. Result has 307 places, 303 transitions, 786 flow [2022-07-12 10:30:23,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=786, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-07-12 10:30:23,254 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 8 predicate places. [2022-07-12 10:30:23,254 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 786 flow [2022-07-12 10:30:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:23,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:23,255 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:30:23,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 72012847, now seen corresponding path program 1 times [2022-07-12 10:30:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499171622] [2022-07-12 10:30:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:30:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:23,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499171622] [2022-07-12 10:30:23,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499171622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:30:23,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232145306] [2022-07-12 10:30:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:23,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:30:23,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:30:23,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:30:23,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:30:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:23,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 10:30:23,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:30:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:30:23,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:30:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:30:24,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232145306] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:30:24,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:30:24,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-12 10:30:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68442127] [2022-07-12 10:30:24,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:30:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:30:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:30:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:30:24,259 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 328 [2022-07-12 10:30:24,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 786 flow. Second operand has 19 states, 19 states have (on average 239.8421052631579) internal successors, (4557), 19 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:24,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:24,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 328 [2022-07-12 10:30:24,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:24,910 INFO L129 PetriNetUnfolder]: 596/1876 cut-off events. [2022-07-12 10:30:24,910 INFO L130 PetriNetUnfolder]: For 2331/2359 co-relation queries the response was YES. [2022-07-12 10:30:24,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 1876 events. 596/1876 cut-off events. For 2331/2359 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9239 event pairs, 294 based on Foata normal form. 5/1739 useless extension candidates. Maximal degree in co-relation 4727. Up to 863 conditions per place. [2022-07-12 10:30:24,928 INFO L132 encePairwiseOnDemand]: 306/328 looper letters, 79 selfloop transitions, 23 changer transitions 60/371 dead transitions. [2022-07-12 10:30:24,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 371 transitions, 1313 flow [2022-07-12 10:30:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:30:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:30:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4122 transitions. [2022-07-12 10:30:24,966 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7392395982783357 [2022-07-12 10:30:24,966 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4122 transitions. [2022-07-12 10:30:24,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4122 transitions. [2022-07-12 10:30:24,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:24,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4122 transitions. [2022-07-12 10:30:24,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 242.47058823529412) internal successors, (4122), 17 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:24,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:24,979 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:24,979 INFO L186 Difference]: Start difference. First operand has 307 places, 303 transitions, 786 flow. Second operand 17 states and 4122 transitions. [2022-07-12 10:30:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 371 transitions, 1313 flow [2022-07-12 10:30:24,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 371 transitions, 1287 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-07-12 10:30:24,990 INFO L242 Difference]: Finished difference. Result has 329 places, 307 transitions, 848 flow [2022-07-12 10:30:24,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=848, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2022-07-12 10:30:24,991 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 30 predicate places. [2022-07-12 10:30:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 848 flow [2022-07-12 10:30:24,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 239.8421052631579) internal successors, (4557), 19 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:24,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:24,993 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:25,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:30:25,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 10:30:25,208 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:25,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1325210156, now seen corresponding path program 2 times [2022-07-12 10:30:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:25,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186059637] [2022-07-12 10:30:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:30:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186059637] [2022-07-12 10:30:25,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186059637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:30:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917300946] [2022-07-12 10:30:25,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:30:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:30:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:30:25,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:30:25,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:30:25,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:30:25,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:30:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 10:30:25,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:30:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 10:30:25,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:30:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 10:30:26,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917300946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:30:26,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:30:26,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2022-07-12 10:30:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94995432] [2022-07-12 10:30:26,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:30:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:30:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:30:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:30:26,021 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 328 [2022-07-12 10:30:26,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 848 flow. Second operand has 23 states, 23 states have (on average 239.2173913043478) internal successors, (5502), 23 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:26,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:26,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 328 [2022-07-12 10:30:26,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:27,625 INFO L129 PetriNetUnfolder]: 861/2909 cut-off events. [2022-07-12 10:30:27,625 INFO L130 PetriNetUnfolder]: For 3100/3132 co-relation queries the response was YES. [2022-07-12 10:30:27,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7063 conditions, 2909 events. 861/2909 cut-off events. For 3100/3132 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16799 event pairs, 422 based on Foata normal form. 111/2820 useless extension candidates. Maximal degree in co-relation 7040. Up to 850 conditions per place. [2022-07-12 10:30:27,643 INFO L132 encePairwiseOnDemand]: 292/328 looper letters, 84 selfloop transitions, 33 changer transitions 190/514 dead transitions. [2022-07-12 10:30:27,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 514 transitions, 2251 flow [2022-07-12 10:30:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-12 10:30:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-12 10:30:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 14199 transitions. [2022-07-12 10:30:27,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7214939024390243 [2022-07-12 10:30:27,659 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 14199 transitions. [2022-07-12 10:30:27,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 14199 transitions. [2022-07-12 10:30:27,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:27,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 14199 transitions. [2022-07-12 10:30:27,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 236.65) internal successors, (14199), 60 states have internal predecessors, (14199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:27,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 328.0) internal successors, (20008), 61 states have internal predecessors, (20008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:27,709 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 328.0) internal successors, (20008), 61 states have internal predecessors, (20008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:27,710 INFO L186 Difference]: Start difference. First operand has 329 places, 307 transitions, 848 flow. Second operand 60 states and 14199 transitions. [2022-07-12 10:30:27,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 514 transitions, 2251 flow [2022-07-12 10:30:27,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 514 transitions, 2122 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-07-12 10:30:27,719 INFO L242 Difference]: Finished difference. Result has 402 places, 315 transitions, 1007 flow [2022-07-12 10:30:27,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=1007, PETRI_PLACES=402, PETRI_TRANSITIONS=315} [2022-07-12 10:30:27,720 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 103 predicate places. [2022-07-12 10:30:27,720 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 315 transitions, 1007 flow [2022-07-12 10:30:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 239.2173913043478) internal successors, (5502), 23 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:27,721 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:27,722 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:27,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:30:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:30:27,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 831819534, now seen corresponding path program 3 times [2022-07-12 10:30:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177170296] [2022-07-12 10:30:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 10:30:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:28,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177170296] [2022-07-12 10:30:28,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177170296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:30:28,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:30:28,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:30:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352055001] [2022-07-12 10:30:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:30:28,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:30:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:30:28,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:30:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:30:28,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-07-12 10:30:28,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 315 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:28,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:30:28,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-07-12 10:30:28,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:30:28,857 INFO L129 PetriNetUnfolder]: 1522/3939 cut-off events. [2022-07-12 10:30:28,857 INFO L130 PetriNetUnfolder]: For 8444/8494 co-relation queries the response was YES. [2022-07-12 10:30:28,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 3939 events. 1522/3939 cut-off events. For 8444/8494 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 27362 event pairs, 275 based on Foata normal form. 79/3728 useless extension candidates. Maximal degree in co-relation 11567. Up to 813 conditions per place. [2022-07-12 10:30:28,902 INFO L132 encePairwiseOnDemand]: 325/328 looper letters, 84 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2022-07-12 10:30:28,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 366 transitions, 1513 flow [2022-07-12 10:30:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:30:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:30:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1200 transitions. [2022-07-12 10:30:28,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146341463414634 [2022-07-12 10:30:28,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1200 transitions. [2022-07-12 10:30:28,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1200 transitions. [2022-07-12 10:30:28,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:30:28,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1200 transitions. [2022-07-12 10:30:28,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:28,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:28,907 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:28,907 INFO L186 Difference]: Start difference. First operand has 402 places, 315 transitions, 1007 flow. Second operand 4 states and 1200 transitions. [2022-07-12 10:30:28,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 366 transitions, 1513 flow [2022-07-12 10:30:28,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 366 transitions, 1335 flow, removed 65 selfloop flow, removed 35 redundant places. [2022-07-12 10:30:28,918 INFO L242 Difference]: Finished difference. Result has 338 places, 318 transitions, 919 flow [2022-07-12 10:30:28,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=338, PETRI_TRANSITIONS=318} [2022-07-12 10:30:28,920 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 39 predicate places. [2022-07-12 10:30:28,920 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 318 transitions, 919 flow [2022-07-12 10:30:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:30:28,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:30:28,920 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:30:28,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:30:28,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:30:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:30:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 152518940, now seen corresponding path program 1 times [2022-07-12 10:30:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:30:28,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189191329] [2022-07-12 10:30:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:30:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:30:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:30:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189191329] [2022-07-12 10:30:38,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189191329] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:30:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41214737] [2022-07-12 10:30:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:30:38,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:30:38,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:30:38,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:30:38,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:30:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:30:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-12 10:30:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:30:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:30:48,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:30:56,305 INFO L356 Elim1Store]: treesize reduction 160, result has 58.8 percent of original size [2022-07-12 10:30:56,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 247 [2022-07-12 10:30:56,571 INFO L356 Elim1Store]: treesize reduction 166, result has 57.2 percent of original size [2022-07-12 10:30:56,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 241 [2022-07-12 10:30:56,776 INFO L356 Elim1Store]: treesize reduction 167, result has 56.3 percent of original size [2022-07-12 10:30:56,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 241 [2022-07-12 10:30:57,089 INFO L356 Elim1Store]: treesize reduction 160, result has 58.8 percent of original size [2022-07-12 10:30:57,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 247 [2022-07-12 10:30:57,445 INFO L356 Elim1Store]: treesize reduction 189, result has 51.3 percent of original size [2022-07-12 10:30:57,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 218 [2022-07-12 10:30:57,721 INFO L356 Elim1Store]: treesize reduction 160, result has 58.8 percent of original size [2022-07-12 10:30:57,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 247 [2022-07-12 10:31:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:31:11,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41214737] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:31:11,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:31:11,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 64, 53] total 179 [2022-07-12 10:31:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935530186] [2022-07-12 10:31:11,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:31:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-07-12 10:31:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:31:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-07-12 10:31:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3631, Invalid=28231, Unknown=0, NotChecked=0, Total=31862 [2022-07-12 10:31:11,158 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 328 [2022-07-12 10:31:11,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 318 transitions, 919 flow. Second operand has 179 states, 179 states have (on average 130.84916201117318) internal successors, (23422), 179 states have internal predecessors, (23422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:31:11,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:31:11,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 328 [2022-07-12 10:31:11,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:31:56,615 INFO L129 PetriNetUnfolder]: 9798/22124 cut-off events. [2022-07-12 10:31:56,615 INFO L130 PetriNetUnfolder]: For 30415/30996 co-relation queries the response was YES. [2022-07-12 10:31:56,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61078 conditions, 22124 events. 9798/22124 cut-off events. For 30415/30996 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 200777 event pairs, 415 based on Foata normal form. 239/21064 useless extension candidates. Maximal degree in co-relation 61047. Up to 6411 conditions per place. [2022-07-12 10:31:56,811 INFO L132 encePairwiseOnDemand]: 216/328 looper letters, 448 selfloop transitions, 429 changer transitions 132/1121 dead transitions. [2022-07-12 10:31:56,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1121 transitions, 5745 flow [2022-07-12 10:31:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-07-12 10:31:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2022-07-12 10:31:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 27182 transitions. [2022-07-12 10:31:56,843 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4042534205829863 [2022-07-12 10:31:56,843 INFO L72 ComplementDD]: Start complementDD. Operand 205 states and 27182 transitions. [2022-07-12 10:31:56,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 27182 transitions. [2022-07-12 10:31:56,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:31:56,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 205 states and 27182 transitions. [2022-07-12 10:31:56,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 206 states, 205 states have (on average 132.5951219512195) internal successors, (27182), 205 states have internal predecessors, (27182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:31:57,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 206 states, 206 states have (on average 328.0) internal successors, (67568), 206 states have internal predecessors, (67568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:31:57,066 INFO L81 ComplementDD]: Finished complementDD. Result has 206 states, 206 states have (on average 328.0) internal successors, (67568), 206 states have internal predecessors, (67568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:31:57,067 INFO L186 Difference]: Start difference. First operand has 338 places, 318 transitions, 919 flow. Second operand 205 states and 27182 transitions. [2022-07-12 10:31:57,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1121 transitions, 5745 flow [2022-07-12 10:31:57,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1121 transitions, 5705 flow, removed 20 selfloop flow, removed 0 redundant places. [2022-07-12 10:31:57,105 INFO L242 Difference]: Finished difference. Result has 607 places, 719 transitions, 4390 flow [2022-07-12 10:31:57,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=205, PETRI_FLOW=4390, PETRI_PLACES=607, PETRI_TRANSITIONS=719} [2022-07-12 10:31:57,106 INFO L279 CegarLoopForPetriNet]: 299 programPoint places, 308 predicate places. [2022-07-12 10:31:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 719 transitions, 4390 flow [2022-07-12 10:31:57,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 130.84916201117318) internal successors, (23422), 179 states have internal predecessors, (23422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:31:57,111 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:31:57,111 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:31:57,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:31:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:31:57,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:31:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:31:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1257117232, now seen corresponding path program 2 times [2022-07-12 10:31:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:31:57,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510398494] [2022-07-12 10:31:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:31:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:31:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:32:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:32:04,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:32:04,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510398494] [2022-07-12 10:32:04,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510398494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:32:04,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379827156] [2022-07-12 10:32:04,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:32:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:32:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:32:04,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:32:04,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:32:04,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:32:04,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:32:04,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 209 conjunts are in the unsatisfiable core [2022-07-12 10:32:04,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:32:05,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:06,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:32:08,098 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:32:08,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 10:32:08,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:09,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:11,308 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:32:11,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 10:32:12,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:15,028 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:32:15,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:32:16,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:32:19,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:20,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:21,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:21,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:32:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:32:30,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:32:37,031 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:32:51,933 WARN L233 SmtUtils]: Spent 14.60s on a formula simplification. DAG size of input: 79 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:33:11,837 WARN L233 SmtUtils]: Spent 9.66s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)