./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:44:00,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:44:00,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:44:00,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:44:00,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:44:00,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:44:00,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:44:00,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:44:00,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:44:00,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:44:00,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:44:00,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:44:00,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:44:00,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:44:00,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:44:00,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:44:00,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:44:00,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:44:00,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:44:00,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:44:00,823 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:44:00,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:44:00,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:44:00,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:44:00,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:44:00,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:44:00,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:44:00,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:44:00,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:44:00,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:44:00,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:44:00,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:44:00,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:44:00,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:44:00,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:44:00,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:44:00,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:44:00,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:44:00,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:44:00,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:44:00,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:44:00,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:44:00,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:44:00,887 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:44:00,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:44:00,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:44:00,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:44:00,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:44:00,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:44:00,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:44:00,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:44:00,890 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:44:00,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:44:00,891 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:44:00,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:44:00,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:44:00,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:44:00,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:44:00,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:44:00,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:44:00,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:44:00,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:44:00,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:00,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:44:00,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:44:00,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:44:00,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:44:00,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:44:00,895 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:44:00,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:44:00,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:44:00,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2022-07-21 08:44:01,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:44:01,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:44:01,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:44:01,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:44:01,245 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:44:01,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-07-21 08:44:01,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b4c7f55/3203517f502a46efadaae728b0b1269e/FLAGce96e1369 [2022-07-21 08:44:01,768 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:44:01,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-07-21 08:44:01,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b4c7f55/3203517f502a46efadaae728b0b1269e/FLAGce96e1369 [2022-07-21 08:44:02,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b4c7f55/3203517f502a46efadaae728b0b1269e [2022-07-21 08:44:02,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:44:02,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:44:02,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:02,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:44:02,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:44:02,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4a5041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02, skipping insertion in model container [2022-07-21 08:44:02,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:44:02,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:44:02,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2022-07-21 08:44:02,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:02,461 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:44:02,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2022-07-21 08:44:02,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:02,559 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:44:02,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02 WrapperNode [2022-07-21 08:44:02,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:02,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:02,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:44:02,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:44:02,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,614 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-07-21 08:44:02,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:02,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:44:02,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:44:02,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:44:02,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:44:02,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:44:02,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:44:02,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:44:02,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:44:02,704 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) [2022-07-21 08:44:02,731 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 [2022-07-21 08:44:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:44:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:44:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:44:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:44:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:44:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:44:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:44:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:44:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:44:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:44:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:44:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:44:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:44:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:44:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:44:02,751 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:44:02,888 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:44:02,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:44:03,098 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:44:03,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:44:03,107 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:44:03,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03 BoogieIcfgContainer [2022-07-21 08:44:03,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:44:03,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:44:03,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:44:03,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:44:03,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:44:02" (1/3) ... [2022-07-21 08:44:03,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcc434b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:03, skipping insertion in model container [2022-07-21 08:44:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02" (2/3) ... [2022-07-21 08:44:03,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcc434b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:03, skipping insertion in model container [2022-07-21 08:44:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03" (3/3) ... [2022-07-21 08:44:03,118 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2022-07-21 08:44:03,123 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:44:03,131 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:44:03,132 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:44:03,132 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:44:03,205 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:44:03,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-07-21 08:44:03,304 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2022-07-21 08:44:03,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:03,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-21 08:44:03,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-07-21 08:44:03,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-07-21 08:44:03,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:44:03,327 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@60511c4a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76790a02 [2022-07-21 08:44:03,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:44:03,343 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2022-07-21 08:44:03,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:03,346 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:03,346 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] [2022-07-21 08:44:03,347 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 1 more)] === [2022-07-21 08:44:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1681563862, now seen corresponding path program 1 times [2022-07-21 08:44:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:03,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689848594] [2022-07-21 08:44:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:03,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:03,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689848594] [2022-07-21 08:44:03,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689848594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:03,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:03,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569613615] [2022-07-21 08:44:03,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:03,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:03,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-21 08:44:03,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:03,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:03,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-21 08:44:03,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:04,126 INFO L129 PetriNetUnfolder]: 54/231 cut-off events. [2022-07-21 08:44:04,126 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:44:04,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 231 events. 54/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 841 event pairs, 21 based on Foata normal form. 8/231 useless extension candidates. Maximal degree in co-relation 331. Up to 67 conditions per place. [2022-07-21 08:44:04,132 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 14 selfloop transitions, 5 changer transitions 22/101 dead transitions. [2022-07-21 08:44:04,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 299 flow [2022-07-21 08:44:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-07-21 08:44:04,158 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2022-07-21 08:44:04,158 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2022-07-21 08:44:04,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2022-07-21 08:44:04,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:04,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2022-07-21 08:44:04,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,181 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 711 transitions. [2022-07-21 08:44:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 299 flow [2022-07-21 08:44:04,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:44:04,191 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 205 flow [2022-07-21 08:44:04,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=205, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2022-07-21 08:44:04,196 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-07-21 08:44:04,197 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 205 flow [2022-07-21 08:44:04,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:04,198 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] [2022-07-21 08:44:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:44:04,199 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 1 more)] === [2022-07-21 08:44:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1344051029, now seen corresponding path program 1 times [2022-07-21 08:44:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792662078] [2022-07-21 08:44:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:04,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:04,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792662078] [2022-07-21 08:44:04,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792662078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:04,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:04,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593321762] [2022-07-21 08:44:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:04,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:04,389 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-21 08:44:04,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:04,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-21 08:44:04,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:04,738 INFO L129 PetriNetUnfolder]: 97/375 cut-off events. [2022-07-21 08:44:04,739 INFO L130 PetriNetUnfolder]: For 324/352 co-relation queries the response was YES. [2022-07-21 08:44:04,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 375 events. 97/375 cut-off events. For 324/352 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1737 event pairs, 7 based on Foata normal form. 8/375 useless extension candidates. Maximal degree in co-relation 763. Up to 53 conditions per place. [2022-07-21 08:44:04,743 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 11 changer transitions 38/136 dead transitions. [2022-07-21 08:44:04,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 621 flow [2022-07-21 08:44:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:44:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:44:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2022-07-21 08:44:04,747 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.825426944971537 [2022-07-21 08:44:04,748 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2022-07-21 08:44:04,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2022-07-21 08:44:04,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:04,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2022-07-21 08:44:04,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,756 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,756 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 205 flow. Second operand 17 states and 1305 transitions. [2022-07-21 08:44:04,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 621 flow [2022-07-21 08:44:04,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 576 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:04,765 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 313 flow [2022-07-21 08:44:04,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=313, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2022-07-21 08:44:04,766 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2022-07-21 08:44:04,766 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 313 flow [2022-07-21 08:44:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,767 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:04,767 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] [2022-07-21 08:44:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:44:04,768 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 1 more)] === [2022-07-21 08:44:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:04,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1976276855, now seen corresponding path program 1 times [2022-07-21 08:44:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:04,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324976473] [2022-07-21 08:44:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:04,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324976473] [2022-07-21 08:44:04,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324976473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:04,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:04,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202556444] [2022-07-21 08:44:04,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:04,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:04,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:04,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:04,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-21 08:44:04,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:04,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-21 08:44:04,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,068 INFO L129 PetriNetUnfolder]: 35/187 cut-off events. [2022-07-21 08:44:05,069 INFO L130 PetriNetUnfolder]: For 913/971 co-relation queries the response was YES. [2022-07-21 08:44:05,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 187 events. 35/187 cut-off events. For 913/971 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 5 based on Foata normal form. 8/190 useless extension candidates. Maximal degree in co-relation 598. Up to 43 conditions per place. [2022-07-21 08:44:05,072 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 19 selfloop transitions, 4 changer transitions 22/106 dead transitions. [2022-07-21 08:44:05,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 636 flow [2022-07-21 08:44:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2022-07-21 08:44:05,075 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8351254480286738 [2022-07-21 08:44:05,075 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2022-07-21 08:44:05,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2022-07-21 08:44:05,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2022-07-21 08:44:05,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,081 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 313 flow. Second operand 9 states and 699 transitions. [2022-07-21 08:44:05,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 636 flow [2022-07-21 08:44:05,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 544 flow, removed 42 selfloop flow, removed 10 redundant places. [2022-07-21 08:44:05,091 INFO L242 Difference]: Finished difference. Result has 111 places, 82 transitions, 304 flow [2022-07-21 08:44:05,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2022-07-21 08:44:05,093 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2022-07-21 08:44:05,094 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 304 flow [2022-07-21 08:44:05,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,094 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,094 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] [2022-07-21 08:44:05,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:44:05,095 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 1 more)] === [2022-07-21 08:44:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash -772166055, now seen corresponding path program 1 times [2022-07-21 08:44:05,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176805556] [2022-07-21 08:44:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:05,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176805556] [2022-07-21 08:44:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176805556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:05,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:05,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311081244] [2022-07-21 08:44:05,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:05,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:05,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-21 08:44:05,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:05,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-21 08:44:05,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,371 INFO L129 PetriNetUnfolder]: 33/175 cut-off events. [2022-07-21 08:44:05,372 INFO L130 PetriNetUnfolder]: For 602/763 co-relation queries the response was YES. [2022-07-21 08:44:05,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 175 events. 33/175 cut-off events. For 602/763 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 455 event pairs, 9 based on Foata normal form. 5/170 useless extension candidates. Maximal degree in co-relation 528. Up to 36 conditions per place. [2022-07-21 08:44:05,374 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 4 changer transitions 30/104 dead transitions. [2022-07-21 08:44:05,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 622 flow [2022-07-21 08:44:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2022-07-21 08:44:05,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8193548387096774 [2022-07-21 08:44:05,377 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 762 transitions. [2022-07-21 08:44:05,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 762 transitions. [2022-07-21 08:44:05,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 762 transitions. [2022-07-21 08:44:05,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.2) internal successors, (762), 10 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,381 INFO L186 Difference]: Start difference. First operand has 111 places, 82 transitions, 304 flow. Second operand 10 states and 762 transitions. [2022-07-21 08:44:05,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 622 flow [2022-07-21 08:44:05,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 556 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-07-21 08:44:05,386 INFO L242 Difference]: Finished difference. Result has 113 places, 74 transitions, 242 flow [2022-07-21 08:44:05,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2022-07-21 08:44:05,387 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2022-07-21 08:44:05,387 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 242 flow [2022-07-21 08:44:05,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,388 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] [2022-07-21 08:44:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:44:05,388 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 1 more)] === [2022-07-21 08:44:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 321062132, now seen corresponding path program 1 times [2022-07-21 08:44:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272708968] [2022-07-21 08:44:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:05,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272708968] [2022-07-21 08:44:05,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272708968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:05,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:05,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109351131] [2022-07-21 08:44:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:05,531 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-21 08:44:05,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:05,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-21 08:44:05,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,661 INFO L129 PetriNetUnfolder]: 24/156 cut-off events. [2022-07-21 08:44:05,661 INFO L130 PetriNetUnfolder]: For 482/594 co-relation queries the response was YES. [2022-07-21 08:44:05,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 156 events. 24/156 cut-off events. For 482/594 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 427 event pairs, 5 based on Foata normal form. 4/156 useless extension candidates. Maximal degree in co-relation 422. Up to 25 conditions per place. [2022-07-21 08:44:05,663 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 12 selfloop transitions, 6 changer transitions 22/97 dead transitions. [2022-07-21 08:44:05,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 528 flow [2022-07-21 08:44:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:44:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:44:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 834 transitions. [2022-07-21 08:44:05,666 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8152492668621701 [2022-07-21 08:44:05,666 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 834 transitions. [2022-07-21 08:44:05,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 834 transitions. [2022-07-21 08:44:05,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 834 transitions. [2022-07-21 08:44:05,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.81818181818181) internal successors, (834), 11 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,671 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,671 INFO L186 Difference]: Start difference. First operand has 113 places, 74 transitions, 242 flow. Second operand 11 states and 834 transitions. [2022-07-21 08:44:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 528 flow [2022-07-21 08:44:05,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 432 flow, removed 32 selfloop flow, removed 17 redundant places. [2022-07-21 08:44:05,675 INFO L242 Difference]: Finished difference. Result has 107 places, 74 transitions, 228 flow [2022-07-21 08:44:05,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=74} [2022-07-21 08:44:05,677 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2022-07-21 08:44:05,677 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 74 transitions, 228 flow [2022-07-21 08:44:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,678 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,679 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] [2022-07-21 08:44:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:44:05,679 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 1 more)] === [2022-07-21 08:44:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1979615423, now seen corresponding path program 1 times [2022-07-21 08:44:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044192973] [2022-07-21 08:44:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:05,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044192973] [2022-07-21 08:44:05,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044192973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:05,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:05,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831860005] [2022-07-21 08:44:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:05,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:05,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-21 08:44:05,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 74 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:05,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-21 08:44:05,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,895 INFO L129 PetriNetUnfolder]: 113/367 cut-off events. [2022-07-21 08:44:05,895 INFO L130 PetriNetUnfolder]: For 335/341 co-relation queries the response was YES. [2022-07-21 08:44:05,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 367 events. 113/367 cut-off events. For 335/341 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1748 event pairs, 14 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 751. Up to 90 conditions per place. [2022-07-21 08:44:05,898 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 6 changer transitions 19/100 dead transitions. [2022-07-21 08:44:05,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 360 flow [2022-07-21 08:44:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 725 transitions. [2022-07-21 08:44:05,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8661887694145759 [2022-07-21 08:44:05,904 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 725 transitions. [2022-07-21 08:44:05,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 725 transitions. [2022-07-21 08:44:05,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 725 transitions. [2022-07-21 08:44:05,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,908 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,908 INFO L186 Difference]: Start difference. First operand has 107 places, 74 transitions, 228 flow. Second operand 9 states and 725 transitions. [2022-07-21 08:44:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 360 flow [2022-07-21 08:44:05,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 330 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-07-21 08:44:05,912 INFO L242 Difference]: Finished difference. Result has 104 places, 77 transitions, 254 flow [2022-07-21 08:44:05,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2022-07-21 08:44:05,915 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2022-07-21 08:44:05,915 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 254 flow [2022-07-21 08:44:05,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,916 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] [2022-07-21 08:44:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:44:05,917 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 1 more)] === [2022-07-21 08:44:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash -215483288, now seen corresponding path program 1 times [2022-07-21 08:44:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111618251] [2022-07-21 08:44:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111618251] [2022-07-21 08:44:06,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111618251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:06,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511664134] [2022-07-21 08:44:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:06,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-21 08:44:06,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-21 08:44:06,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,154 INFO L129 PetriNetUnfolder]: 60/248 cut-off events. [2022-07-21 08:44:06,154 INFO L130 PetriNetUnfolder]: For 389/409 co-relation queries the response was YES. [2022-07-21 08:44:06,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 248 events. 60/248 cut-off events. For 389/409 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 906 event pairs, 4 based on Foata normal form. 9/253 useless extension candidates. Maximal degree in co-relation 676. Up to 79 conditions per place. [2022-07-21 08:44:06,156 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2022-07-21 08:44:06,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 519 flow [2022-07-21 08:44:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 804 transitions. [2022-07-21 08:44:06,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.864516129032258 [2022-07-21 08:44:06,160 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 804 transitions. [2022-07-21 08:44:06,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 804 transitions. [2022-07-21 08:44:06,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 804 transitions. [2022-07-21 08:44:06,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,165 INFO L186 Difference]: Start difference. First operand has 104 places, 77 transitions, 254 flow. Second operand 10 states and 804 transitions. [2022-07-21 08:44:06,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 519 flow [2022-07-21 08:44:06,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 495 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-07-21 08:44:06,169 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 322 flow [2022-07-21 08:44:06,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=322, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2022-07-21 08:44:06,169 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 25 predicate places. [2022-07-21 08:44:06,170 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 322 flow [2022-07-21 08:44:06,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,171 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:06,171 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] [2022-07-21 08:44:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:44:06,171 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 1 more)] === [2022-07-21 08:44:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2147456695, now seen corresponding path program 1 times [2022-07-21 08:44:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:06,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460371675] [2022-07-21 08:44:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460371675] [2022-07-21 08:44:06,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460371675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:06,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262433133] [2022-07-21 08:44:06,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:06,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:06,280 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-21 08:44:06,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-21 08:44:06,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,402 INFO L129 PetriNetUnfolder]: 17/132 cut-off events. [2022-07-21 08:44:06,402 INFO L130 PetriNetUnfolder]: For 407/422 co-relation queries the response was YES. [2022-07-21 08:44:06,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 132 events. 17/132 cut-off events. For 407/422 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 260 event pairs, 0 based on Foata normal form. 10/142 useless extension candidates. Maximal degree in co-relation 380. Up to 31 conditions per place. [2022-07-21 08:44:06,404 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 8 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2022-07-21 08:44:06,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 518 flow [2022-07-21 08:44:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:44:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:44:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 871 transitions. [2022-07-21 08:44:06,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8514173998044966 [2022-07-21 08:44:06,406 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 871 transitions. [2022-07-21 08:44:06,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 871 transitions. [2022-07-21 08:44:06,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 871 transitions. [2022-07-21 08:44:06,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.18181818181819) internal successors, (871), 11 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,411 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,411 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 322 flow. Second operand 11 states and 871 transitions. [2022-07-21 08:44:06,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 518 flow [2022-07-21 08:44:06,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 393 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:06,415 INFO L242 Difference]: Finished difference. Result has 107 places, 80 transitions, 282 flow [2022-07-21 08:44:06,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2022-07-21 08:44:06,416 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2022-07-21 08:44:06,416 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 282 flow [2022-07-21 08:44:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,416 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:06,417 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] [2022-07-21 08:44:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:44:06,417 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 1 more)] === [2022-07-21 08:44:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1391054992, now seen corresponding path program 1 times [2022-07-21 08:44:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:06,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115450277] [2022-07-21 08:44:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115450277] [2022-07-21 08:44:06,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115450277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:06,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269898109] [2022-07-21 08:44:06,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:06,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:06,494 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-21 08:44:06,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-21 08:44:06,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,569 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2022-07-21 08:44:06,569 INFO L130 PetriNetUnfolder]: For 83/89 co-relation queries the response was YES. [2022-07-21 08:44:06,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 94 events. 6/94 cut-off events. For 83/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 173. Up to 11 conditions per place. [2022-07-21 08:44:06,570 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-07-21 08:44:06,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 79 transitions, 316 flow [2022-07-21 08:44:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:44:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:44:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2022-07-21 08:44:06,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7983870967741935 [2022-07-21 08:44:06,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 594 transitions. [2022-07-21 08:44:06,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 594 transitions. [2022-07-21 08:44:06,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 594 transitions. [2022-07-21 08:44:06,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.25) internal successors, (594), 8 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,576 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,576 INFO L186 Difference]: Start difference. First operand has 107 places, 80 transitions, 282 flow. Second operand 8 states and 594 transitions. [2022-07-21 08:44:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 79 transitions, 316 flow [2022-07-21 08:44:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 79 transitions, 234 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:06,578 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-21 08:44:06,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-21 08:44:06,579 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2022-07-21 08:44:06,579 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-21 08:44:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:44:06,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:44:06,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:44:06,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-21 08:44:06,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:44:06,583 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:06,586 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:44:06,586 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:44:06,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:44:06 BasicIcfg [2022-07-21 08:44:06,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:44:06,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:44:06,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:44:06,591 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:44:06,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03" (3/4) ... [2022-07-21 08:44:06,593 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:44:06,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:44:06,599 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:44:06,599 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-21 08:44:06,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-21 08:44:06,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:44:06,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:44:06,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:44:06,628 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:44:06,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:44:06,629 INFO L158 Benchmark]: Toolchain (without parser) took 4544.61ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 40.0MB in the beginning and 29.4MB in the end (delta: 10.5MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,630 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 46.1MB. Free memory was 27.4MB in the beginning and 27.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:44:06,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.27ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 30.3MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.23ms. Allocated memory is still 56.6MB. Free memory was 30.1MB in the beginning and 28.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,631 INFO L158 Benchmark]: Boogie Preprocessor took 47.01ms. Allocated memory is still 56.6MB. Free memory was 28.1MB in the beginning and 26.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:44:06,631 INFO L158 Benchmark]: RCFGBuilder took 447.16ms. Allocated memory is still 56.6MB. Free memory was 26.8MB in the beginning and 28.4MB in the end (delta: -1.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,631 INFO L158 Benchmark]: TraceAbstraction took 3477.55ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 28.0MB in the beginning and 32.0MB in the end (delta: -4.0MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,632 INFO L158 Benchmark]: Witness Printer took 38.14ms. Allocated memory is still 86.0MB. Free memory was 32.0MB in the beginning and 29.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:06,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 46.1MB. Free memory was 27.4MB in the beginning and 27.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.27ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 30.3MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.23ms. Allocated memory is still 56.6MB. Free memory was 30.1MB in the beginning and 28.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.01ms. Allocated memory is still 56.6MB. Free memory was 28.1MB in the beginning and 26.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.16ms. Allocated memory is still 56.6MB. Free memory was 26.8MB in the beginning and 28.4MB in the end (delta: -1.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3477.55ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 28.0MB in the beginning and 32.0MB in the end (delta: -4.0MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 38.14ms. Allocated memory is still 86.0MB. Free memory was 32.0MB in the beginning and 29.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 466 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 446 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 116 mSDtfsCounter, 469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=7, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 546 ConstructedInterpolants, 0 QuantifiedInterpolants, 2284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:44:06,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE