./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe018_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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:44:14,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:44:14,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:44:14,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:44:14,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:44:14,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:44:14,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:44:14,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:44:14,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:44:14,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:44:15,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:44:15,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:44:15,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:44:15,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:44:15,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:44:15,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:44:15,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:44:15,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:44:15,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:44:15,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:44:15,021 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:44:15,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:44:15,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:44:15,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:44:15,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:44:15,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:44:15,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:44:15,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:44:15,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:44:15,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:44:15,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:44:15,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:44:15,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:44:15,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:44:15,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:44:15,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:44:15,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:44:15,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:44:15,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:44:15,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:44:15,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:44:15,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:44:15,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:44:15,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:44:15,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:44:15,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:44:15,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:44:15,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:44:15,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:44:15,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:44:15,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:44:15,062 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:44:15,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:44:15,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:44:15,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:44:15,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:44:15,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:44:15,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:44:15,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:44:15,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:44:15,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:44:15,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:44:15,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:44:15,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:44:15,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:44:15,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:44:15,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:44:15,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:15,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:44:15,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:44:15,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:44:15,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:44:15,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:44:15,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:44:15,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:44:15,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:44:15,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2022-07-21 08:44:15,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:44:15,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:44:15,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:44:15,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:44:15,403 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:44:15,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:44:15,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444d8dd8c/017d38884b864822bc0d87893a7796f9/FLAG559d22411 [2022-07-21 08:44:15,966 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:44:15,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:44:15,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444d8dd8c/017d38884b864822bc0d87893a7796f9/FLAG559d22411 [2022-07-21 08:44:16,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444d8dd8c/017d38884b864822bc0d87893a7796f9 [2022-07-21 08:44:16,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:44:16,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:44:16,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:16,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:44:16,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:44:16,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70662dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16, skipping insertion in model container [2022-07-21 08:44:16,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:44:16,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:44:16,558 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-21 08:44:16,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:16,765 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:44:16,779 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-21 08:44:16,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:16,845 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:44:16,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16 WrapperNode [2022-07-21 08:44:16,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:16,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:16,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:44:16,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:44:16,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,894 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-21 08:44:16,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:16,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:44:16,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:44:16,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:44:16,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:44:16,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:44:16,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:44:16,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:44:16,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (1/1) ... [2022-07-21 08:44:16,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:16,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:44:16,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:44:16,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:44:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:44:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:44:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:44:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:44:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:44:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:44:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:44:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:44:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:44:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:44:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:44:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:44:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:44:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:44:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:44:17,008 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:44:17,144 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:44:17,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:44:17,243 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:44:17,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:44:17,248 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:44:17,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:17 BoogieIcfgContainer [2022-07-21 08:44:17,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:44:17,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:44:17,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:44:17,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:44:17,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:44:16" (1/3) ... [2022-07-21 08:44:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fdab16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:17, skipping insertion in model container [2022-07-21 08:44:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:16" (2/3) ... [2022-07-21 08:44:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fdab16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:17, skipping insertion in model container [2022-07-21 08:44:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:17" (3/3) ... [2022-07-21 08:44:17,255 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:44:17,258 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:44:17,264 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:44:17,264 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:44:17,264 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:44:17,289 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:44:17,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-07-21 08:44:17,342 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-07-21 08:44:17,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:17,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-07-21 08:44:17,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-07-21 08:44:17,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-07-21 08:44:17,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:44:17,359 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@d1a5966, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37f7c906 [2022-07-21 08:44:17,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:44:17,371 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-07-21 08:44:17,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:17,371 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:17,371 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] [2022-07-21 08:44:17,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1558539592, now seen corresponding path program 1 times [2022-07-21 08:44:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568234249] [2022-07-21 08:44:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568234249] [2022-07-21 08:44:17,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568234249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:17,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:17,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893696434] [2022-07-21 08:44:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:17,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:17,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-07-21 08:44:17,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:17,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:17,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-07-21 08:44:17,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:17,977 INFO L129 PetriNetUnfolder]: 54/234 cut-off events. [2022-07-21 08:44:17,977 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:44:17,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 234 events. 54/234 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 880 event pairs, 22 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 335. Up to 67 conditions per place. [2022-07-21 08:44:17,980 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 14 selfloop transitions, 5 changer transitions 22/99 dead transitions. [2022-07-21 08:44:17,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 295 flow [2022-07-21 08:44:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:17,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 693 transitions. [2022-07-21 08:44:17,991 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-07-21 08:44:17,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 693 transitions. [2022-07-21 08:44:17,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 693 transitions. [2022-07-21 08:44:17,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:17,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 693 transitions. [2022-07-21 08:44:18,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.0) internal successors, (693), 9 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) [2022-07-21 08:44:18,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,011 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,012 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 693 transitions. [2022-07-21 08:44:18,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 295 flow [2022-07-21 08:44:18,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:44:18,017 INFO L242 Difference]: Finished difference. Result has 95 places, 75 transitions, 201 flow [2022-07-21 08:44:18,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2022-07-21 08:44:18,048 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-07-21 08:44:18,051 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 201 flow [2022-07-21 08:44:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:18,053 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] [2022-07-21 08:44:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:44:18,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1493491801, now seen corresponding path program 1 times [2022-07-21 08:44:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:18,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779325484] [2022-07-21 08:44:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:18,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:18,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779325484] [2022-07-21 08:44:18,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779325484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:18,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:18,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628387664] [2022-07-21 08:44:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:18,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-21 08:44:18,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:18,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-21 08:44:18,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:18,336 INFO L129 PetriNetUnfolder]: 22/151 cut-off events. [2022-07-21 08:44:18,336 INFO L130 PetriNetUnfolder]: For 151/166 co-relation queries the response was YES. [2022-07-21 08:44:18,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 151 events. 22/151 cut-off events. For 151/166 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 341 event pairs, 5 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 322. Up to 26 conditions per place. [2022-07-21 08:44:18,337 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 9 selfloop transitions, 4 changer transitions 24/96 dead transitions. [2022-07-21 08:44:18,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 397 flow [2022-07-21 08:44:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:44:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:44:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 999 transitions. [2022-07-21 08:44:18,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444632290786137 [2022-07-21 08:44:18,340 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 999 transitions. [2022-07-21 08:44:18,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 999 transitions. [2022-07-21 08:44:18,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:18,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 999 transitions. [2022-07-21 08:44:18,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.84615384615384) internal successors, (999), 13 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,346 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,346 INFO L186 Difference]: Start difference. First operand has 95 places, 75 transitions, 201 flow. Second operand 13 states and 999 transitions. [2022-07-21 08:44:18,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 397 flow [2022-07-21 08:44:18,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 356 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:18,350 INFO L242 Difference]: Finished difference. Result has 108 places, 72 transitions, 208 flow [2022-07-21 08:44:18,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=208, PETRI_PLACES=108, PETRI_TRANSITIONS=72} [2022-07-21 08:44:18,351 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2022-07-21 08:44:18,351 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 72 transitions, 208 flow [2022-07-21 08:44:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,352 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:18,352 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] [2022-07-21 08:44:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:44:18,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1560547969, now seen corresponding path program 1 times [2022-07-21 08:44:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:18,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810419388] [2022-07-21 08:44:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:18,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810419388] [2022-07-21 08:44:18,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810419388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:18,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:18,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571928986] [2022-07-21 08:44:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:18,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:18,449 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2022-07-21 08:44:18,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 72 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:18,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2022-07-21 08:44:18,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:18,583 INFO L129 PetriNetUnfolder]: 23/149 cut-off events. [2022-07-21 08:44:18,583 INFO L130 PetriNetUnfolder]: For 199/246 co-relation queries the response was YES. [2022-07-21 08:44:18,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 149 events. 23/149 cut-off events. For 199/246 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 5 based on Foata normal form. 4/149 useless extension candidates. Maximal degree in co-relation 300. Up to 18 conditions per place. [2022-07-21 08:44:18,585 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 11 selfloop transitions, 4 changer transitions 20/93 dead transitions. [2022-07-21 08:44:18,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 368 flow [2022-07-21 08:44:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 767 transitions. [2022-07-21 08:44:18,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-07-21 08:44:18,587 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 767 transitions. [2022-07-21 08:44:18,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 767 transitions. [2022-07-21 08:44:18,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:18,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 767 transitions. [2022-07-21 08:44:18,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.7) internal successors, (767), 10 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,591 INFO L186 Difference]: Start difference. First operand has 108 places, 72 transitions, 208 flow. Second operand 10 states and 767 transitions. [2022-07-21 08:44:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 368 flow [2022-07-21 08:44:18,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 299 flow, removed 30 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:18,604 INFO L242 Difference]: Finished difference. Result has 100 places, 72 transitions, 202 flow [2022-07-21 08:44:18,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=100, PETRI_TRANSITIONS=72} [2022-07-21 08:44:18,605 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-07-21 08:44:18,605 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 72 transitions, 202 flow [2022-07-21 08:44:18,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,605 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:18,606 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] [2022-07-21 08:44:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:44:18,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1245710330, now seen corresponding path program 1 times [2022-07-21 08:44:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119063003] [2022-07-21 08:44:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:18,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:18,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119063003] [2022-07-21 08:44:18,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119063003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:18,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:18,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127946494] [2022-07-21 08:44:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:18,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:18,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-21 08:44:18,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 72 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:18,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-21 08:44:18,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:18,854 INFO L129 PetriNetUnfolder]: 92/331 cut-off events. [2022-07-21 08:44:18,854 INFO L130 PetriNetUnfolder]: For 102/106 co-relation queries the response was YES. [2022-07-21 08:44:18,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 331 events. 92/331 cut-off events. For 102/106 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1568 event pairs, 14 based on Foata normal form. 8/333 useless extension candidates. Maximal degree in co-relation 575. Up to 81 conditions per place. [2022-07-21 08:44:18,856 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 14 selfloop transitions, 6 changer transitions 19/98 dead transitions. [2022-07-21 08:44:18,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 334 flow [2022-07-21 08:44:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-07-21 08:44:18,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-07-21 08:44:18,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-07-21 08:44:18,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-07-21 08:44:18,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:18,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-07-21 08:44:18,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,876 INFO L186 Difference]: Start difference. First operand has 100 places, 72 transitions, 202 flow. Second operand 9 states and 707 transitions. [2022-07-21 08:44:18,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 334 flow [2022-07-21 08:44:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 308 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-07-21 08:44:18,879 INFO L242 Difference]: Finished difference. Result has 98 places, 75 transitions, 232 flow [2022-07-21 08:44:18,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2022-07-21 08:44:18,879 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2022-07-21 08:44:18,879 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 232 flow [2022-07-21 08:44:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,880 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:18,880 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] [2022-07-21 08:44:18,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:44:18,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash -391551882, now seen corresponding path program 1 times [2022-07-21 08:44:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683731142] [2022-07-21 08:44:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:18,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683731142] [2022-07-21 08:44:18,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683731142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:18,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:18,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508199077] [2022-07-21 08:44:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:18,964 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-21 08:44:18,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:18,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:18,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-21 08:44:18,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:19,095 INFO L129 PetriNetUnfolder]: 53/229 cut-off events. [2022-07-21 08:44:19,095 INFO L130 PetriNetUnfolder]: For 311/344 co-relation queries the response was YES. [2022-07-21 08:44:19,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 229 events. 53/229 cut-off events. For 311/344 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 819 event pairs, 0 based on Foata normal form. 12/239 useless extension candidates. Maximal degree in co-relation 593. Up to 76 conditions per place. [2022-07-21 08:44:19,096 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 14 selfloop transitions, 9 changer transitions 19/101 dead transitions. [2022-07-21 08:44:19,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 497 flow [2022-07-21 08:44:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 784 transitions. [2022-07-21 08:44:19,098 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8615384615384616 [2022-07-21 08:44:19,098 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 784 transitions. [2022-07-21 08:44:19,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 784 transitions. [2022-07-21 08:44:19,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:19,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 784 transitions. [2022-07-21 08:44:19,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.4) internal successors, (784), 10 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,102 INFO L186 Difference]: Start difference. First operand has 98 places, 75 transitions, 232 flow. Second operand 10 states and 784 transitions. [2022-07-21 08:44:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 497 flow [2022-07-21 08:44:19,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 469 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-21 08:44:19,105 INFO L242 Difference]: Finished difference. Result has 103 places, 78 transitions, 296 flow [2022-07-21 08:44:19,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2022-07-21 08:44:19,106 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2022-07-21 08:44:19,106 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 296 flow [2022-07-21 08:44:19,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,106 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:19,106 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:19,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:44:19,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash -502031190, now seen corresponding path program 1 times [2022-07-21 08:44:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:19,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330085499] [2022-07-21 08:44:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:19,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:19,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330085499] [2022-07-21 08:44:19,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330085499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:19,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:19,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073903390] [2022-07-21 08:44:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:19,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-21 08:44:19,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:19,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-21 08:44:19,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:19,367 INFO L129 PetriNetUnfolder]: 17/130 cut-off events. [2022-07-21 08:44:19,367 INFO L130 PetriNetUnfolder]: For 376/388 co-relation queries the response was YES. [2022-07-21 08:44:19,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 130 events. 17/130 cut-off events. For 376/388 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 0 based on Foata normal form. 10/140 useless extension candidates. Maximal degree in co-relation 365. Up to 31 conditions per place. [2022-07-21 08:44:19,368 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 8 selfloop transitions, 12 changer transitions 13/92 dead transitions. [2022-07-21 08:44:19,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 92 transitions, 492 flow [2022-07-21 08:44:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:44:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:44:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 849 transitions. [2022-07-21 08:44:19,370 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481518481518482 [2022-07-21 08:44:19,370 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 849 transitions. [2022-07-21 08:44:19,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 849 transitions. [2022-07-21 08:44:19,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:19,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 849 transitions. [2022-07-21 08:44:19,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.18181818181819) internal successors, (849), 11 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,375 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,375 INFO L186 Difference]: Start difference. First operand has 103 places, 78 transitions, 296 flow. Second operand 11 states and 849 transitions. [2022-07-21 08:44:19,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 92 transitions, 492 flow [2022-07-21 08:44:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 92 transitions, 389 flow, removed 40 selfloop flow, removed 10 redundant places. [2022-07-21 08:44:19,379 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 278 flow [2022-07-21 08:44:19,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=278, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-07-21 08:44:19,381 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2022-07-21 08:44:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 278 flow [2022-07-21 08:44:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,382 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:19,382 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:44:19,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 431238983, now seen corresponding path program 1 times [2022-07-21 08:44:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:19,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928265090] [2022-07-21 08:44:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:19,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:19,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:19,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928265090] [2022-07-21 08:44:19,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928265090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:19,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:19,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:19,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99368298] [2022-07-21 08:44:19,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:19,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:19,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:19,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:19,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:19,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-07-21 08:44:19,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:19,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-07-21 08:44:19,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:19,538 INFO L129 PetriNetUnfolder]: 6/92 cut-off events. [2022-07-21 08:44:19,539 INFO L130 PetriNetUnfolder]: For 78/83 co-relation queries the response was YES. [2022-07-21 08:44:19,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 92 events. 6/92 cut-off events. For 78/83 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2022-07-21 08:44:19,539 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-07-21 08:44:19,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 77 transitions, 312 flow [2022-07-21 08:44:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:44:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:44:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 578 transitions. [2022-07-21 08:44:19,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7939560439560439 [2022-07-21 08:44:19,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 578 transitions. [2022-07-21 08:44:19,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 578 transitions. [2022-07-21 08:44:19,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:19,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 578 transitions. [2022-07-21 08:44:19,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,544 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,544 INFO L186 Difference]: Start difference. First operand has 105 places, 78 transitions, 278 flow. Second operand 8 states and 578 transitions. [2022-07-21 08:44:19,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 77 transitions, 312 flow [2022-07-21 08:44:19,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 77 transitions, 230 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:19,545 INFO L242 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2022-07-21 08:44:19,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2022-07-21 08:44:19,546 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2022-07-21 08:44:19,546 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2022-07-21 08:44:19,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:19,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:44:19,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:44:19,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:44:19,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-21 08:44:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:44:19,549 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:19,551 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:44:19,551 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:44:19,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:44:19 BasicIcfg [2022-07-21 08:44:19,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:44:19,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:44:19,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:44:19,555 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:44:19,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:17" (3/4) ... [2022-07-21 08:44:19,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:44:19,561 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:44:19,561 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:44:19,561 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-21 08:44:19,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-21 08:44:19,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:44:19,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:44:19,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:44:19,584 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:44:19,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:44:19,585 INFO L158 Benchmark]: Toolchain (without parser) took 3301.39ms. Allocated memory was 48.2MB in the beginning and 88.1MB in the end (delta: 39.8MB). Free memory was 22.7MB in the beginning and 38.2MB in the end (delta: -15.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,585 INFO L158 Benchmark]: CDTParser took 2.54ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:44:19,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.47ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.5MB in the beginning and 35.1MB in the end (delta: -12.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.28ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,586 INFO L158 Benchmark]: Boogie Preprocessor took 36.34ms. Allocated memory is still 60.8MB. Free memory was 33.0MB in the beginning and 31.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,586 INFO L158 Benchmark]: RCFGBuilder took 317.09ms. Allocated memory is still 60.8MB. Free memory was 31.6MB in the beginning and 33.4MB in the end (delta: -1.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,587 INFO L158 Benchmark]: TraceAbstraction took 2303.40ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 32.9MB in the beginning and 41.6MB in the end (delta: -8.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,587 INFO L158 Benchmark]: Witness Printer took 29.66ms. Allocated memory is still 88.1MB. Free memory was 41.6MB in the beginning and 38.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:44:19,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.54ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.47ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.5MB in the beginning and 35.1MB in the end (delta: -12.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.28ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.34ms. Allocated memory is still 60.8MB. Free memory was 33.0MB in the beginning and 31.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.09ms. Allocated memory is still 60.8MB. Free memory was 31.6MB in the beginning and 33.4MB in the end (delta: -1.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2303.40ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 32.9MB in the beginning and 41.6MB in the end (delta: -8.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Witness Printer took 29.66ms. Allocated memory is still 88.1MB. Free memory was 41.6MB in the beginning and 38.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 224 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 398 IncrementalHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 57 mSDtfsCounter, 398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=5, InterpolantAutomatonStates: 70, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 1672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:44:19,636 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