./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:10:07,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:10:07,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:10:07,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:10:07,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:10:07,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:10:07,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:10:08,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:10:08,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:10:08,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:10:08,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:10:08,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:10:08,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:10:08,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:10:08,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:10:08,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:10:08,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:10:08,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:10:08,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:10:08,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:10:08,014 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:10:08,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:10:08,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:10:08,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:10:08,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:10:08,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:10:08,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:10:08,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:10:08,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:10:08,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:10:08,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:10:08,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:10:08,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:10:08,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:10:08,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:10:08,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:10:08,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:10:08,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:10:08,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:10:08,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:10:08,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:10:08,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:10:08,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:10:08,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:10:08,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:10:08,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:10:08,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:10:08,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:10:08,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:10:08,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:10:08,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:10:08,068 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:10:08,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:10:08,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:10:08,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:10:08,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:10:08,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:10:08,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:10:08,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:10:08,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:10:08,070 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:10:08,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:10:08,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:10:08,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:10:08,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:10:08,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:10:08,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:10:08,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:08,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:10:08,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:10:08,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:10:08,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:10:08,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:10:08,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:10:08,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:10:08,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:10:08,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2022-07-12 10:10:08,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:10:08,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:10:08,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:10:08,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:10:08,283 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:10:08,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:10:08,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d20604/40881d21deff4f0ea22619a68ea4c4ef/FLAG223b53fc8 [2022-07-12 10:10:08,815 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:10:08,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:10:08,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d20604/40881d21deff4f0ea22619a68ea4c4ef/FLAG223b53fc8 [2022-07-12 10:10:08,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d20604/40881d21deff4f0ea22619a68ea4c4ef [2022-07-12 10:10:08,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:10:08,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:10:08,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:08,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:10:08,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:10:08,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:08" (1/1) ... [2022-07-12 10:10:08,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794510bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:08, skipping insertion in model container [2022-07-12 10:10:08,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:08" (1/1) ... [2022-07-12 10:10:08,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:10:08,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:10:09,059 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:10:09,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:09,250 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:10:09,264 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:10:09,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:09,345 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:10:09,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09 WrapperNode [2022-07-12 10:10:09,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:09,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:09,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:10:09,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:10:09,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,405 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-07-12 10:10:09,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:09,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:10:09,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:10:09,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:10:09,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:10:09,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:10:09,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:10:09,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:10:09,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (1/1) ... [2022-07-12 10:10:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:10:09,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:10:09,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:10:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:10:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:10:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:10:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:10:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:10:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:10:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:10:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:10:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:10:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:10:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:10:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:10:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:10:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:10:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:10:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:10:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:10:09,524 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:10:09,626 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:10:09,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:10:09,832 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:10:09,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:10:09,838 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:10:09,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:09 BoogieIcfgContainer [2022-07-12 10:10:09,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:10:09,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:10:09,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:10:09,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:10:09,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:10:08" (1/3) ... [2022-07-12 10:10:09,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5941a0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:09, skipping insertion in model container [2022-07-12 10:10:09,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:09" (2/3) ... [2022-07-12 10:10:09,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5941a0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:09, skipping insertion in model container [2022-07-12 10:10:09,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:09" (3/3) ... [2022-07-12 10:10:09,852 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:10:09,856 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:10:09,864 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:10:09,864 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:10:09,865 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:10:09,920 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:10:09,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 107 transitions, 234 flow [2022-07-12 10:10:10,056 INFO L129 PetriNetUnfolder]: 2/103 cut-off events. [2022-07-12 10:10:10,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:10:10,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-07-12 10:10:10,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 107 transitions, 234 flow [2022-07-12 10:10:10,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 87 transitions, 186 flow [2022-07-12 10:10:10,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:10:10,082 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@42526f7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e25aadb [2022-07-12 10:10:10,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:10:10,102 INFO L129 PetriNetUnfolder]: 1/86 cut-off events. [2022-07-12 10:10:10,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:10:10,102 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:10,103 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] [2022-07-12 10:10:10,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash 915847760, now seen corresponding path program 1 times [2022-07-12 10:10:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:10,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831581506] [2022-07-12 10:10:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:10,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:10,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831581506] [2022-07-12 10:10:10,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831581506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:10,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:10,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:10:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624131209] [2022-07-12 10:10:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:10:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:10:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:10:10,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 107 [2022-07-12 10:10:10,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:10,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:10,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 107 [2022-07-12 10:10:10,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:10,805 INFO L129 PetriNetUnfolder]: 4/108 cut-off events. [2022-07-12 10:10:10,808 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-12 10:10:10,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 108 events. 4/108 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 112. Up to 9 conditions per place. [2022-07-12 10:10:10,811 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 11 selfloop transitions, 2 changer transitions 11/97 dead transitions. [2022-07-12 10:10:10,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 255 flow [2022-07-12 10:10:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:10:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:10:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 846 transitions. [2022-07-12 10:10:10,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8785046728971962 [2022-07-12 10:10:10,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 846 transitions. [2022-07-12 10:10:10,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 846 transitions. [2022-07-12 10:10:10,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:10,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 846 transitions. [2022-07-12 10:10:10,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:10,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:10,857 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:10,859 INFO L186 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 9 states and 846 transitions. [2022-07-12 10:10:10,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 97 transitions, 255 flow [2022-07-12 10:10:10,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:10:10,868 INFO L242 Difference]: Finished difference. Result has 110 places, 85 transitions, 198 flow [2022-07-12 10:10:10,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2022-07-12 10:10:10,873 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 11 predicate places. [2022-07-12 10:10:10,874 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 198 flow [2022-07-12 10:10:10,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:10,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:10,875 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] [2022-07-12 10:10:10,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:10:10,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 910095985, now seen corresponding path program 1 times [2022-07-12 10:10:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:10,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730546936] [2022-07-12 10:10:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:10,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:11,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730546936] [2022-07-12 10:10:11,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730546936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:11,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:11,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812495747] [2022-07-12 10:10:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:11,061 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-07-12 10:10:11,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:11,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-07-12 10:10:11,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:11,264 INFO L129 PetriNetUnfolder]: 64/252 cut-off events. [2022-07-12 10:10:11,264 INFO L130 PetriNetUnfolder]: For 63/66 co-relation queries the response was YES. [2022-07-12 10:10:11,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 252 events. 64/252 cut-off events. For 63/66 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 818 event pairs, 12 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 460. Up to 75 conditions per place. [2022-07-12 10:10:11,267 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 21 selfloop transitions, 2 changer transitions 19/109 dead transitions. [2022-07-12 10:10:11,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 357 flow [2022-07-12 10:10:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:10:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:10:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 809 transitions. [2022-07-12 10:10:11,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400830737279336 [2022-07-12 10:10:11,270 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 809 transitions. [2022-07-12 10:10:11,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 809 transitions. [2022-07-12 10:10:11,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:11,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 809 transitions. [2022-07-12 10:10:11,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.88888888888889) internal successors, (809), 9 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,275 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,275 INFO L186 Difference]: Start difference. First operand has 110 places, 85 transitions, 198 flow. Second operand 9 states and 809 transitions. [2022-07-12 10:10:11,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 357 flow [2022-07-12 10:10:11,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 323 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:10:11,279 INFO L242 Difference]: Finished difference. Result has 110 places, 85 transitions, 202 flow [2022-07-12 10:10:11,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2022-07-12 10:10:11,280 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 11 predicate places. [2022-07-12 10:10:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 202 flow [2022-07-12 10:10:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,281 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:11,281 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] [2022-07-12 10:10:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:10:11,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -240634352, now seen corresponding path program 1 times [2022-07-12 10:10:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127744876] [2022-07-12 10:10:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:11,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127744876] [2022-07-12 10:10:11,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127744876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:11,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:11,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60415112] [2022-07-12 10:10:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:11,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-07-12 10:10:11,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:11,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-07-12 10:10:11,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:11,757 INFO L129 PetriNetUnfolder]: 154/443 cut-off events. [2022-07-12 10:10:11,758 INFO L130 PetriNetUnfolder]: For 144/249 co-relation queries the response was YES. [2022-07-12 10:10:11,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 443 events. 154/443 cut-off events. For 144/249 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1919 event pairs, 18 based on Foata normal form. 10/432 useless extension candidates. Maximal degree in co-relation 868. Up to 89 conditions per place. [2022-07-12 10:10:11,764 INFO L132 encePairwiseOnDemand]: 93/107 looper letters, 25 selfloop transitions, 14 changer transitions 44/148 dead transitions. [2022-07-12 10:10:11,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 148 transitions, 562 flow [2022-07-12 10:10:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:10:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:10:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1498 transitions. [2022-07-12 10:10:11,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2022-07-12 10:10:11,771 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1498 transitions. [2022-07-12 10:10:11,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1498 transitions. [2022-07-12 10:10:11,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:11,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1498 transitions. [2022-07-12 10:10:11,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 88.11764705882354) internal successors, (1498), 17 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,779 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,779 INFO L186 Difference]: Start difference. First operand has 110 places, 85 transitions, 202 flow. Second operand 17 states and 1498 transitions. [2022-07-12 10:10:11,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 148 transitions, 562 flow [2022-07-12 10:10:11,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 500 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-12 10:10:11,784 INFO L242 Difference]: Finished difference. Result has 127 places, 93 transitions, 318 flow [2022-07-12 10:10:11,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=318, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2022-07-12 10:10:11,785 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 28 predicate places. [2022-07-12 10:10:11,785 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 318 flow [2022-07-12 10:10:11,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,786 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:11,786 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] [2022-07-12 10:10:11,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:10:11,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash 578962674, now seen corresponding path program 2 times [2022-07-12 10:10:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:11,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877190433] [2022-07-12 10:10:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877190433] [2022-07-12 10:10:11,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877190433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:11,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:11,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:10:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593146467] [2022-07-12 10:10:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:11,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:10:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:10:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:10:11,909 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-07-12 10:10:11,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:11,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:11,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-07-12 10:10:11,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:12,095 INFO L129 PetriNetUnfolder]: 108/366 cut-off events. [2022-07-12 10:10:12,095 INFO L130 PetriNetUnfolder]: For 2239/2773 co-relation queries the response was YES. [2022-07-12 10:10:12,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 366 events. 108/366 cut-off events. For 2239/2773 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1466 event pairs, 28 based on Foata normal form. 8/349 useless extension candidates. Maximal degree in co-relation 1459. Up to 108 conditions per place. [2022-07-12 10:10:12,100 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 20 selfloop transitions, 4 changer transitions 33/122 dead transitions. [2022-07-12 10:10:12,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 813 flow [2022-07-12 10:10:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:10:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:10:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 882 transitions. [2022-07-12 10:10:12,103 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8242990654205608 [2022-07-12 10:10:12,103 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 882 transitions. [2022-07-12 10:10:12,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 882 transitions. [2022-07-12 10:10:12,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:12,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 882 transitions. [2022-07-12 10:10:12,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.2) internal successors, (882), 10 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,112 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,113 INFO L186 Difference]: Start difference. First operand has 127 places, 93 transitions, 318 flow. Second operand 10 states and 882 transitions. [2022-07-12 10:10:12,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 813 flow [2022-07-12 10:10:12,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 122 transitions, 651 flow, removed 75 selfloop flow, removed 10 redundant places. [2022-07-12 10:10:12,124 INFO L242 Difference]: Finished difference. Result has 122 places, 85 transitions, 264 flow [2022-07-12 10:10:12,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2022-07-12 10:10:12,126 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 23 predicate places. [2022-07-12 10:10:12,126 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 264 flow [2022-07-12 10:10:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:12,127 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:12,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:10:12,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 308034481, now seen corresponding path program 1 times [2022-07-12 10:10:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:12,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669704051] [2022-07-12 10:10:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669704051] [2022-07-12 10:10:12,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669704051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:12,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:12,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952456281] [2022-07-12 10:10:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:12,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:12,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:12,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:12,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:12,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:12,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:12,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:12,405 INFO L129 PetriNetUnfolder]: 67/350 cut-off events. [2022-07-12 10:10:12,405 INFO L130 PetriNetUnfolder]: For 988/1151 co-relation queries the response was YES. [2022-07-12 10:10:12,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 350 events. 67/350 cut-off events. For 988/1151 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1626 event pairs, 35 based on Foata normal form. 9/331 useless extension candidates. Maximal degree in co-relation 959. Up to 82 conditions per place. [2022-07-12 10:10:12,409 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 16 selfloop transitions, 4 changer transitions 18/108 dead transitions. [2022-07-12 10:10:12,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 108 transitions, 525 flow [2022-07-12 10:10:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:10:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:10:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 920 transitions. [2022-07-12 10:10:12,412 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2022-07-12 10:10:12,412 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 920 transitions. [2022-07-12 10:10:12,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 920 transitions. [2022-07-12 10:10:12,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:12,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 920 transitions. [2022-07-12 10:10:12,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,418 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,418 INFO L186 Difference]: Start difference. First operand has 122 places, 85 transitions, 264 flow. Second operand 10 states and 920 transitions. [2022-07-12 10:10:12,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 108 transitions, 525 flow [2022-07-12 10:10:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 435 flow, removed 36 selfloop flow, removed 14 redundant places. [2022-07-12 10:10:12,422 INFO L242 Difference]: Finished difference. Result has 118 places, 85 transitions, 250 flow [2022-07-12 10:10:12,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=85} [2022-07-12 10:10:12,423 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 19 predicate places. [2022-07-12 10:10:12,423 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 85 transitions, 250 flow [2022-07-12 10:10:12,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:12,424 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:12,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:10:12,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:12,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash -104181128, now seen corresponding path program 1 times [2022-07-12 10:10:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:12,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088642112] [2022-07-12 10:10:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088642112] [2022-07-12 10:10:12,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088642112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:12,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:12,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:10:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545345410] [2022-07-12 10:10:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:12,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:10:12,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:10:12,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:10:12,516 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:12,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 85 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:12,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:12,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:12,729 INFO L129 PetriNetUnfolder]: 458/1051 cut-off events. [2022-07-12 10:10:12,730 INFO L130 PetriNetUnfolder]: For 1096/1162 co-relation queries the response was YES. [2022-07-12 10:10:12,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1051 events. 458/1051 cut-off events. For 1096/1162 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6470 event pairs, 99 based on Foata normal form. 20/991 useless extension candidates. Maximal degree in co-relation 2448. Up to 297 conditions per place. [2022-07-12 10:10:12,741 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 27 selfloop transitions, 17 changer transitions 4/118 dead transitions. [2022-07-12 10:10:12,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 416 flow [2022-07-12 10:10:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:10:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:10:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 842 transitions. [2022-07-12 10:10:12,745 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-07-12 10:10:12,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 842 transitions. [2022-07-12 10:10:12,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 842 transitions. [2022-07-12 10:10:12,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:12,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 842 transitions. [2022-07-12 10:10:12,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.55555555555556) internal successors, (842), 9 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,750 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,751 INFO L186 Difference]: Start difference. First operand has 118 places, 85 transitions, 250 flow. Second operand 9 states and 842 transitions. [2022-07-12 10:10:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 416 flow [2022-07-12 10:10:12,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 390 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-07-12 10:10:12,757 INFO L242 Difference]: Finished difference. Result has 115 places, 100 transitions, 347 flow [2022-07-12 10:10:12,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=347, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2022-07-12 10:10:12,760 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2022-07-12 10:10:12,760 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 347 flow [2022-07-12 10:10:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:12,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:12,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:10:12,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -179612214, now seen corresponding path program 1 times [2022-07-12 10:10:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:12,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752107808] [2022-07-12 10:10:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:12,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752107808] [2022-07-12 10:10:12,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752107808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:12,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:12,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:12,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817942901] [2022-07-12 10:10:12,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:12,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:12,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:12,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:12,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:12,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:12,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:12,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:12,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:13,110 INFO L129 PetriNetUnfolder]: 449/1042 cut-off events. [2022-07-12 10:10:13,111 INFO L130 PetriNetUnfolder]: For 2659/3119 co-relation queries the response was YES. [2022-07-12 10:10:13,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 1042 events. 449/1042 cut-off events. For 2659/3119 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6616 event pairs, 47 based on Foata normal form. 38/1022 useless extension candidates. Maximal degree in co-relation 3553. Up to 449 conditions per place. [2022-07-12 10:10:13,122 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 30 selfloop transitions, 33 changer transitions 4/137 dead transitions. [2022-07-12 10:10:13,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 137 transitions, 722 flow [2022-07-12 10:10:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:10:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:10:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1121 transitions. [2022-07-12 10:10:13,125 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8730529595015576 [2022-07-12 10:10:13,125 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1121 transitions. [2022-07-12 10:10:13,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1121 transitions. [2022-07-12 10:10:13,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:13,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1121 transitions. [2022-07-12 10:10:13,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,131 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,131 INFO L186 Difference]: Start difference. First operand has 115 places, 100 transitions, 347 flow. Second operand 12 states and 1121 transitions. [2022-07-12 10:10:13,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 137 transitions, 722 flow [2022-07-12 10:10:13,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 137 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:10:13,156 INFO L242 Difference]: Finished difference. Result has 130 places, 117 transitions, 596 flow [2022-07-12 10:10:13,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=596, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2022-07-12 10:10:13,156 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 31 predicate places. [2022-07-12 10:10:13,157 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 596 flow [2022-07-12 10:10:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,157 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:13,157 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:13,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:10:13,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1505400083, now seen corresponding path program 1 times [2022-07-12 10:10:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:13,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111611702] [2022-07-12 10:10:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111611702] [2022-07-12 10:10:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111611702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:13,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:13,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:10:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369275879] [2022-07-12 10:10:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:10:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:10:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:10:13,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:13,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:13,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:13,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:13,598 INFO L129 PetriNetUnfolder]: 375/898 cut-off events. [2022-07-12 10:10:13,598 INFO L130 PetriNetUnfolder]: For 6945/9687 co-relation queries the response was YES. [2022-07-12 10:10:13,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 898 events. 375/898 cut-off events. For 6945/9687 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5666 event pairs, 10 based on Foata normal form. 57/912 useless extension candidates. Maximal degree in co-relation 4356. Up to 413 conditions per place. [2022-07-12 10:10:13,608 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 26 selfloop transitions, 51 changer transitions 10/157 dead transitions. [2022-07-12 10:10:13,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 157 transitions, 1188 flow [2022-07-12 10:10:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:10:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:10:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1399 transitions. [2022-07-12 10:10:13,612 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8716510903426792 [2022-07-12 10:10:13,613 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1399 transitions. [2022-07-12 10:10:13,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1399 transitions. [2022-07-12 10:10:13,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:13,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1399 transitions. [2022-07-12 10:10:13,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.26666666666667) internal successors, (1399), 15 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,620 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,620 INFO L186 Difference]: Start difference. First operand has 130 places, 117 transitions, 596 flow. Second operand 15 states and 1399 transitions. [2022-07-12 10:10:13,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 157 transitions, 1188 flow [2022-07-12 10:10:13,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 157 transitions, 1099 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:10:13,636 INFO L242 Difference]: Finished difference. Result has 145 places, 139 transitions, 927 flow [2022-07-12 10:10:13,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=927, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2022-07-12 10:10:13,638 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 46 predicate places. [2022-07-12 10:10:13,638 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 927 flow [2022-07-12 10:10:13,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:13,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:13,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:10:13,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 763823098, now seen corresponding path program 1 times [2022-07-12 10:10:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:13,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614911141] [2022-07-12 10:10:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:13,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:13,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614911141] [2022-07-12 10:10:13,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614911141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:13,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:13,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:10:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885440955] [2022-07-12 10:10:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:10:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:10:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:10:13,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:13,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 927 flow. Second operand has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:13,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:13,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:13,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:14,064 INFO L129 PetriNetUnfolder]: 301/789 cut-off events. [2022-07-12 10:10:14,065 INFO L130 PetriNetUnfolder]: For 7062/7635 co-relation queries the response was YES. [2022-07-12 10:10:14,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 789 events. 301/789 cut-off events. For 7062/7635 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5387 event pairs, 4 based on Foata normal form. 68/819 useless extension candidates. Maximal degree in co-relation 4082. Up to 270 conditions per place. [2022-07-12 10:10:14,074 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 57 changer transitions 20/166 dead transitions. [2022-07-12 10:10:14,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 1368 flow [2022-07-12 10:10:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:10:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:10:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1661 transitions. [2022-07-12 10:10:14,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8624091381100727 [2022-07-12 10:10:14,078 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1661 transitions. [2022-07-12 10:10:14,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1661 transitions. [2022-07-12 10:10:14,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:14,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1661 transitions. [2022-07-12 10:10:14,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 92.27777777777777) internal successors, (1661), 18 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,087 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,087 INFO L186 Difference]: Start difference. First operand has 145 places, 139 transitions, 927 flow. Second operand 18 states and 1661 transitions. [2022-07-12 10:10:14,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 1368 flow [2022-07-12 10:10:14,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 166 transitions, 1175 flow, removed 72 selfloop flow, removed 9 redundant places. [2022-07-12 10:10:14,120 INFO L242 Difference]: Finished difference. Result has 159 places, 139 transitions, 876 flow [2022-07-12 10:10:14,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=876, PETRI_PLACES=159, PETRI_TRANSITIONS=139} [2022-07-12 10:10:14,121 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 60 predicate places. [2022-07-12 10:10:14,121 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 139 transitions, 876 flow [2022-07-12 10:10:14,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,122 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:14,122 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:14,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:10:14,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1888289169, now seen corresponding path program 1 times [2022-07-12 10:10:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:14,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450998877] [2022-07-12 10:10:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450998877] [2022-07-12 10:10:14,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450998877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:14,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:14,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:14,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853731854] [2022-07-12 10:10:14,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:14,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:14,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:14,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:14,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-07-12 10:10:14,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 139 transitions, 876 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:14,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-07-12 10:10:14,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:14,445 INFO L129 PetriNetUnfolder]: 469/1426 cut-off events. [2022-07-12 10:10:14,446 INFO L130 PetriNetUnfolder]: For 5341/5473 co-relation queries the response was YES. [2022-07-12 10:10:14,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1426 events. 469/1426 cut-off events. For 5341/5473 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12182 event pairs, 2 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 5253. Up to 200 conditions per place. [2022-07-12 10:10:14,461 INFO L132 encePairwiseOnDemand]: 95/107 looper letters, 16 selfloop transitions, 8 changer transitions 4/147 dead transitions. [2022-07-12 10:10:14,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 147 transitions, 968 flow [2022-07-12 10:10:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:10:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:10:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 693 transitions. [2022-07-12 10:10:14,464 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8095794392523364 [2022-07-12 10:10:14,464 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 693 transitions. [2022-07-12 10:10:14,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 693 transitions. [2022-07-12 10:10:14,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:14,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 693 transitions. [2022-07-12 10:10:14,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,468 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,468 INFO L186 Difference]: Start difference. First operand has 159 places, 139 transitions, 876 flow. Second operand 8 states and 693 transitions. [2022-07-12 10:10:14,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 147 transitions, 968 flow [2022-07-12 10:10:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 147 transitions, 745 flow, removed 42 selfloop flow, removed 23 redundant places. [2022-07-12 10:10:14,535 INFO L242 Difference]: Finished difference. Result has 146 places, 142 transitions, 713 flow [2022-07-12 10:10:14,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2022-07-12 10:10:14,536 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 47 predicate places. [2022-07-12 10:10:14,536 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 713 flow [2022-07-12 10:10:14,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:14,537 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:14,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:10:14,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:10:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1430318031, now seen corresponding path program 2 times [2022-07-12 10:10:14,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:14,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641003304] [2022-07-12 10:10:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:14,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:14,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641003304] [2022-07-12 10:10:14,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641003304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:14,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:14,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:14,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857264778] [2022-07-12 10:10:14,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:14,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:14,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-07-12 10:10:14,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:14,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-07-12 10:10:14,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:14,833 INFO L129 PetriNetUnfolder]: 613/1852 cut-off events. [2022-07-12 10:10:14,833 INFO L130 PetriNetUnfolder]: For 3321/3393 co-relation queries the response was YES. [2022-07-12 10:10:14,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5277 conditions, 1852 events. 613/1852 cut-off events. For 3321/3393 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 17102 event pairs, 1 based on Foata normal form. 1/1749 useless extension candidates. Maximal degree in co-relation 5253. Up to 235 conditions per place. [2022-07-12 10:10:14,847 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 0 selfloop transitions, 0 changer transitions 144/144 dead transitions. [2022-07-12 10:10:14,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 764 flow [2022-07-12 10:10:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:10:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:10:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-07-12 10:10:14,849 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477970627503337 [2022-07-12 10:10:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-07-12 10:10:14,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-07-12 10:10:14,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:14,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-07-12 10:10:14,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,852 INFO L186 Difference]: Start difference. First operand has 146 places, 142 transitions, 713 flow. Second operand 7 states and 635 transitions. [2022-07-12 10:10:14,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 764 flow [2022-07-12 10:10:14,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 144 transitions, 749 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-12 10:10:14,953 INFO L242 Difference]: Finished difference. Result has 143 places, 0 transitions, 0 flow [2022-07-12 10:10:14,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=143, PETRI_TRANSITIONS=0} [2022-07-12 10:10:14,954 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 44 predicate places. [2022-07-12 10:10:14,954 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 0 transitions, 0 flow [2022-07-12 10:10:14,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:14,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 10:10:14,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-12 10:10:14,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:10:14,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-12 10:10:14,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-12 10:10:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:10:14,959 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:14,961 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:10:14,962 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:10:14,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:10:14 BasicIcfg [2022-07-12 10:10:14,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:10:14,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:10:14,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:10:14,968 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:10:14,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:09" (3/4) ... [2022-07-12 10:10:14,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:10:14,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:10:14,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:10:14,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:10:14,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-07-12 10:10:14,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-12 10:10:14,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:10:14,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:10:14,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:10:15,009 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:10:15,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:10:15,010 INFO L158 Benchmark]: Toolchain (without parser) took 6165.17ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 64.1MB in the beginning and 112.8MB in the end (delta: -48.7MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,010 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 98.6MB. Free memory was 53.0MB in the beginning and 52.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:10:15,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.34ms. Allocated memory is still 98.6MB. Free memory was 63.9MB in the beginning and 64.2MB in the end (delta: -353.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.60ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,011 INFO L158 Benchmark]: Boogie Preprocessor took 45.62ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:10:15,011 INFO L158 Benchmark]: RCFGBuilder took 387.19ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 47.9MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,015 INFO L158 Benchmark]: TraceAbstraction took 5125.28ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 47.5MB in the beginning and 114.9MB in the end (delta: -67.4MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,015 INFO L158 Benchmark]: Witness Printer took 41.99ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:10:15,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 98.6MB. Free memory was 53.0MB in the beginning and 52.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.34ms. Allocated memory is still 98.6MB. Free memory was 63.9MB in the beginning and 64.2MB in the end (delta: -353.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.60ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.62ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 387.19ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 47.9MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5125.28ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 47.5MB in the beginning and 114.9MB in the end (delta: -67.4MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. * Witness Printer took 41.99ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). 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 9 procedures, 136 locations, 5 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: 5.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 420 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 420 mSDsluCounter, 503 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 575 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 827 IncrementalHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 116 mSDtfsCounter, 827 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=927occurred in iteration=8, InterpolantAutomatonStates: 124, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 765 ConstructedInterpolants, 0 QuantifiedInterpolants, 2581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-07-12 10:10:15,052 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