./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/pthread-wmm/safe019_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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:57:16,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:57:16,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:57:16,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:57:16,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:57:16,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:57:16,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:57:16,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:57:16,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:57:16,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:57:16,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:57:16,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:57:16,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:57:16,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:57:16,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:57:16,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:57:16,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:57:16,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:57:16,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:57:16,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:57:16,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:57:16,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:57:16,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:57:16,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:57:16,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:57:16,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:57:16,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:57:16,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:57:16,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:57:16,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:57:16,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:57:16,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:57:16,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:57:16,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:57:16,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:57:16,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:57:16,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:57:16,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:57:16,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:57:16,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:57:16,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:57:16,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:57:16,918 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:57:16,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:57:16,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:57:16,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:57:16,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:57:16,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:57:16,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:57:16,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:57:16,922 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:57:16,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:57:16,923 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:57:16,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:57:16,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:57:16,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:57:16,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:57:16,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:57:16,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:57:16,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:57:16,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:57:16,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:57:16,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:57:16,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:57:16,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:57:16,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:57:16,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:57:16,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:57:16,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:57:16,927 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:57:16,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:57:16,927 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:57:16,928 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:57:17,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:57:17,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:57:17,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:57:17,273 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:57:17,273 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:57:17,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:57:18,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:57:18,668 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:57:18,669 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:57:18,685 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805cf09d5/ca0926097e3e40fba713164d037b0aed/FLAG869f8c9f2 [2023-09-01 09:57:18,703 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805cf09d5/ca0926097e3e40fba713164d037b0aed [2023-09-01 09:57:18,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:57:18,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:57:18,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:57:18,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:57:18,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:57:18,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:57:18" (1/1) ... [2023-09-01 09:57:18,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579cb33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:18, skipping insertion in model container [2023-09-01 09:57:18,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:57:18" (1/1) ... [2023-09-01 09:57:18,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:57:18,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:57:18,946 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:57:19,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:57:19,142 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:57:19,153 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:57:19,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:57:19,244 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:57:19,244 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:57:19,250 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:57:19,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19 WrapperNode [2023-09-01 09:57:19,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:57:19,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:57:19,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:57:19,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:57:19,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,314 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-09-01 09:57:19,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:57:19,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:57:19,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:57:19,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:57:19,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,356 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:57:19,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:57:19,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:57:19,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:57:19,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (1/1) ... [2023-09-01 09:57:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:57:19,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:57:19,402 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) [2023-09-01 09:57:19,419 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 [2023-09-01 09:57:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:57:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:57:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:57:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:57:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:57:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:57:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:57:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:57:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:57:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:57:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:57:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-09-01 09:57:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-09-01 09:57:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:57:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:57:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:57:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:57:19,449 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:57:19,631 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:57:19,633 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:57:19,819 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:57:19,826 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:57:19,826 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:57:19,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:19 BoogieIcfgContainer [2023-09-01 09:57:19,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:57:19,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:57:19,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:57:19,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:57:19,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:57:18" (1/3) ... [2023-09-01 09:57:19,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f14cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:57:19, skipping insertion in model container [2023-09-01 09:57:19,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:19" (2/3) ... [2023-09-01 09:57:19,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f14cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:57:19, skipping insertion in model container [2023-09-01 09:57:19,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:19" (3/3) ... [2023-09-01 09:57:19,837 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:57:19,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:57:19,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:57:19,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:57:19,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:57:19,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:57:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2023-09-01 09:57:20,019 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2023-09-01 09:57:20,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:20,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-09-01 09:57:20,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2023-09-01 09:57:20,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2023-09-01 09:57:20,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:57:20,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 81 transitions, 174 flow [2023-09-01 09:57:20,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 81 transitions, 174 flow [2023-09-01 09:57:20,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 81 transitions, 174 flow [2023-09-01 09:57:20,063 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2023-09-01 09:57:20,064 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:20,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 1/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-09-01 09:57:20,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-09-01 09:57:22,105 INFO L134 LiptonReduction]: Checked pairs total: 2668 [2023-09-01 09:57:22,105 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-09-01 09:57:22,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:57:22,122 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36efbc88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:57:22,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 09:57:22,128 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-09-01 09:57:22,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:22,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:22,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:22,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:22,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:22,134 INFO L85 PathProgramCache]: Analyzing trace with hash -109062191, now seen corresponding path program 1 times [2023-09-01 09:57:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223904854] [2023-09-01 09:57:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223904854] [2023-09-01 09:57:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223904854] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:22,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:57:22,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932652349] [2023-09-01 09:57:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:22,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:57:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:57:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:57:22,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:22,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-09-01 09:57:22,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:22,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:22,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:23,139 INFO L130 PetriNetUnfolder]: 1747/2539 cut-off events. [2023-09-01 09:57:23,140 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-09-01 09:57:23,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11322 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2023-09-01 09:57:23,162 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-09-01 09:57:23,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2023-09-01 09:57:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:57:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:57:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-09-01 09:57:23,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2023-09-01 09:57:23,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-09-01 09:57:23,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-09-01 09:57:23,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:23,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-09-01 09:57:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-09-01 09:57:23,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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) [2023-09-01 09:57:23,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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) [2023-09-01 09:57:23,198 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 288 transitions. [2023-09-01 09:57:23,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2023-09-01 09:57:23,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 09:57:23,205 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2023-09-01 09:57:23,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 09:57:23,211 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-09-01 09:57:23,212 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2023-09-01 09:57:23,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-09-01 09:57:23,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:23,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:23,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:57:23,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:23,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash 914038522, now seen corresponding path program 1 times [2023-09-01 09:57:23,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:23,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398330215] [2023-09-01 09:57:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398330215] [2023-09-01 09:57:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398330215] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:23,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:23,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988511006] [2023-09-01 09:57:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:23,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:23,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2023-09-01 09:57:23,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:23,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:23,835 INFO L130 PetriNetUnfolder]: 1647/2406 cut-off events. [2023-09-01 09:57:23,835 INFO L131 PetriNetUnfolder]: For 401/401 co-relation queries the response was YES. [2023-09-01 09:57:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 2406 events. 1647/2406 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10611 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 6094. Up to 1391 conditions per place. [2023-09-01 09:57:23,851 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-09-01 09:57:23,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 228 flow [2023-09-01 09:57:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-09-01 09:57:23,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-09-01 09:57:23,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-09-01 09:57:23,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-09-01 09:57:23,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:23,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-09-01 09:57:23,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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) [2023-09-01 09:57:23,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:23,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:23,859 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 374 transitions. [2023-09-01 09:57:23,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 228 flow [2023-09-01 09:57:23,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:57:23,870 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2023-09-01 09:57:23,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-09-01 09:57:23,871 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-09-01 09:57:23,872 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2023-09-01 09:57:23,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2023-09-01 09:57:23,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:23,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:57:23,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:23,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 914038677, now seen corresponding path program 1 times [2023-09-01 09:57:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533158165] [2023-09-01 09:57:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533158165] [2023-09-01 09:57:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533158165] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:57:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161987370] [2023-09-01 09:57:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:57:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:57:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:57:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 165 [2023-09-01 09:57:24,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-09-01 09:57:24,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:24,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 165 [2023-09-01 09:57:24,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:24,262 INFO L130 PetriNetUnfolder]: 1414/2106 cut-off events. [2023-09-01 09:57:24,262 INFO L131 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2023-09-01 09:57:24,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5732 conditions, 2106 events. 1414/2106 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9729 event pairs, 411 based on Foata normal form. 12/2036 useless extension candidates. Maximal degree in co-relation 5718. Up to 1733 conditions per place. [2023-09-01 09:57:24,278 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-09-01 09:57:24,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 217 flow [2023-09-01 09:57:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:57:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:57:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-09-01 09:57:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-09-01 09:57:24,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-09-01 09:57:24,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-09-01 09:57:24,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:24,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-09-01 09:57:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-09-01 09:57:24,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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) [2023-09-01 09:57:24,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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) [2023-09-01 09:57:24,283 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 3 states and 297 transitions. [2023-09-01 09:57:24,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 217 flow [2023-09-01 09:57:24,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:57:24,291 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 131 flow [2023-09-01 09:57:24,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-09-01 09:57:24,293 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-09-01 09:57:24,293 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 131 flow [2023-09-01 09:57:24,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-09-01 09:57:24,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:24,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:24,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:57:24,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:24,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1822099019, now seen corresponding path program 1 times [2023-09-01 09:57:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:24,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163534799] [2023-09-01 09:57:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:24,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163534799] [2023-09-01 09:57:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163534799] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390051842] [2023-09-01 09:57:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:24,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:24,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:24,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-09-01 09:57:24,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:24,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:24,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:24,679 INFO L130 PetriNetUnfolder]: 1489/2182 cut-off events. [2023-09-01 09:57:24,679 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-09-01 09:57:24,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 2182 events. 1489/2182 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9426 event pairs, 394 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6120. Up to 1369 conditions per place. [2023-09-01 09:57:24,693 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-09-01 09:57:24,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 316 flow [2023-09-01 09:57:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-09-01 09:57:24,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712121212121212 [2023-09-01 09:57:24,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-09-01 09:57:24,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-09-01 09:57:24,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:24,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-09-01 09:57:24,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-09-01 09:57:24,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:24,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:24,700 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 131 flow. Second operand 4 states and 377 transitions. [2023-09-01 09:57:24,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 316 flow [2023-09-01 09:57:24,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:57:24,705 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 189 flow [2023-09-01 09:57:24,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-09-01 09:57:24,706 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-09-01 09:57:24,706 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 189 flow [2023-09-01 09:57:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-09-01 09:57:24,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:24,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:57:24,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:24,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2077298808, now seen corresponding path program 1 times [2023-09-01 09:57:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296494855] [2023-09-01 09:57:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296494855] [2023-09-01 09:57:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296494855] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868578984] [2023-09-01 09:57:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:24,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 165 [2023-09-01 09:57:24,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2023-09-01 09:57:24,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:24,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 165 [2023-09-01 09:57:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:25,128 INFO L130 PetriNetUnfolder]: 1530/2367 cut-off events. [2023-09-01 09:57:25,129 INFO L131 PetriNetUnfolder]: For 4454/4718 co-relation queries the response was YES. [2023-09-01 09:57:25,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 2367 events. 1530/2367 cut-off events. For 4454/4718 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13056 event pairs, 321 based on Foata normal form. 165/2447 useless extension candidates. Maximal degree in co-relation 7025. Up to 960 conditions per place. [2023-09-01 09:57:25,144 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 40 selfloop transitions, 4 changer transitions 12/62 dead transitions. [2023-09-01 09:57:25,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 461 flow [2023-09-01 09:57:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-09-01 09:57:25,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2023-09-01 09:57:25,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-09-01 09:57:25,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-09-01 09:57:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:25,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-09-01 09:57:25,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-09-01 09:57:25,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:25,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:25,150 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 189 flow. Second operand 4 states and 392 transitions. [2023-09-01 09:57:25,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 461 flow [2023-09-01 09:57:25,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:57:25,159 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 202 flow [2023-09-01 09:57:25,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-09-01 09:57:25,160 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-09-01 09:57:25,160 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 202 flow [2023-09-01 09:57:25,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2023-09-01 09:57:25,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:25,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:25,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:57:25,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:25,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1566534828, now seen corresponding path program 1 times [2023-09-01 09:57:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:25,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296287928] [2023-09-01 09:57:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:25,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296287928] [2023-09-01 09:57:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296287928] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836726729] [2023-09-01 09:57:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:57:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:57:25,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:57:25,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:25,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2023-09-01 09:57:25,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:25,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:25,513 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2023-09-01 09:57:25,513 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-09-01 09:57:25,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 2026 events. 1333/2026 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8962 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6426. Up to 888 conditions per place. [2023-09-01 09:57:25,525 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-09-01 09:57:25,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 427 flow [2023-09-01 09:57:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-09-01 09:57:25,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2023-09-01 09:57:25,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-09-01 09:57:25,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-09-01 09:57:25,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:25,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-09-01 09:57:25,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-09-01 09:57:25,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:25,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:25,531 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 202 flow. Second operand 5 states and 465 transitions. [2023-09-01 09:57:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 427 flow [2023-09-01 09:57:25,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 403 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 09:57:25,542 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 180 flow [2023-09-01 09:57:25,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-09-01 09:57:25,543 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-09-01 09:57:25,543 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 180 flow [2023-09-01 09:57:25,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2023-09-01 09:57:25,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:25,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:25,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:57:25,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:25,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash -388138933, now seen corresponding path program 1 times [2023-09-01 09:57:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:25,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774864402] [2023-09-01 09:57:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:25,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774864402] [2023-09-01 09:57:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774864402] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:25,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:25,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:25,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326392533] [2023-09-01 09:57:25,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:25,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:25,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:25,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2023-09-01 09:57:25,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:25,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:25,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:25,849 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2023-09-01 09:57:25,850 INFO L131 PetriNetUnfolder]: For 2133/2133 co-relation queries the response was YES. [2023-09-01 09:57:25,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 1195 events. 770/1195 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5008 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3686. Up to 600 conditions per place. [2023-09-01 09:57:25,856 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-09-01 09:57:25,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 295 flow [2023-09-01 09:57:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-09-01 09:57:25,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-09-01 09:57:25,859 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-09-01 09:57:25,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-09-01 09:57:25,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:25,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-09-01 09:57:25,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-09-01 09:57:25,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:25,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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) [2023-09-01 09:57:25,862 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 180 flow. Second operand 4 states and 370 transitions. [2023-09-01 09:57:25,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 295 flow [2023-09-01 09:57:25,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 260 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-09-01 09:57:25,868 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 156 flow [2023-09-01 09:57:25,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-09-01 09:57:25,869 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-09-01 09:57:25,869 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 156 flow [2023-09-01 09:57:25,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2023-09-01 09:57:25,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:25,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:25,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:57:25,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:25,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1394447200, now seen corresponding path program 2 times [2023-09-01 09:57:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968950752] [2023-09-01 09:57:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968950752] [2023-09-01 09:57:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968950752] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:26,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:26,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507978122] [2023-09-01 09:57:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:26,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:26,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-09-01 09:57:26,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-09-01 09:57:26,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:26,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-09-01 09:57:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:26,194 INFO L130 PetriNetUnfolder]: 605/1012 cut-off events. [2023-09-01 09:57:26,195 INFO L131 PetriNetUnfolder]: For 2033/2076 co-relation queries the response was YES. [2023-09-01 09:57:26,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1012 events. 605/1012 cut-off events. For 2033/2076 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5086 event pairs, 207 based on Foata normal form. 51/1007 useless extension candidates. Maximal degree in co-relation 2888. Up to 662 conditions per place. [2023-09-01 09:57:26,200 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-09-01 09:57:26,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 523 flow [2023-09-01 09:57:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-09-01 09:57:26,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806060606060606 [2023-09-01 09:57:26,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-09-01 09:57:26,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-09-01 09:57:26,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:26,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-09-01 09:57:26,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2023-09-01 09:57:26,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:26,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:26,206 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 156 flow. Second operand 5 states and 479 transitions. [2023-09-01 09:57:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 523 flow [2023-09-01 09:57:26,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 465 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 09:57:26,210 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 179 flow [2023-09-01 09:57:26,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-09-01 09:57:26,211 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-09-01 09:57:26,211 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 179 flow [2023-09-01 09:57:26,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-09-01 09:57:26,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:26,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:26,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:57:26,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:26,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 821537320, now seen corresponding path program 1 times [2023-09-01 09:57:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724785659] [2023-09-01 09:57:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724785659] [2023-09-01 09:57:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724785659] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:26,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662182398] [2023-09-01 09:57:26,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:26,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:57:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:26,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:57:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:57:26,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-09-01 09:57:26,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-09-01 09:57:26,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:26,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-09-01 09:57:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:26,507 INFO L130 PetriNetUnfolder]: 429/756 cut-off events. [2023-09-01 09:57:26,508 INFO L131 PetriNetUnfolder]: For 1961/2154 co-relation queries the response was YES. [2023-09-01 09:57:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 756 events. 429/756 cut-off events. For 1961/2154 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3707 event pairs, 56 based on Foata normal form. 58/787 useless extension candidates. Maximal degree in co-relation 3012. Up to 511 conditions per place. [2023-09-01 09:57:26,512 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 13 changer transitions 8/80 dead transitions. [2023-09-01 09:57:26,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 597 flow [2023-09-01 09:57:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:57:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:57:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-09-01 09:57:26,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2023-09-01 09:57:26,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-09-01 09:57:26,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-09-01 09:57:26,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:26,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-09-01 09:57:26,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2023-09-01 09:57:26,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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) [2023-09-01 09:57:26,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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) [2023-09-01 09:57:26,519 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 179 flow. Second operand 6 states and 575 transitions. [2023-09-01 09:57:26,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 597 flow [2023-09-01 09:57:26,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 590 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:57:26,524 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 282 flow [2023-09-01 09:57:26,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-09-01 09:57:26,525 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-09-01 09:57:26,525 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 282 flow [2023-09-01 09:57:26,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-09-01 09:57:26,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:26,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:26,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:57:26,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:26,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -302162279, now seen corresponding path program 1 times [2023-09-01 09:57:26,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339508939] [2023-09-01 09:57:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:26,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:26,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339508939] [2023-09-01 09:57:26,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339508939] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:26,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:26,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:57:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12127848] [2023-09-01 09:57:26,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:26,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:57:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:57:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:57:26,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-09-01 09:57:26,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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) [2023-09-01 09:57:26,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:26,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-09-01 09:57:26,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:26,863 INFO L130 PetriNetUnfolder]: 396/713 cut-off events. [2023-09-01 09:57:26,864 INFO L131 PetriNetUnfolder]: For 2476/2929 co-relation queries the response was YES. [2023-09-01 09:57:26,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 713 events. 396/713 cut-off events. For 2476/2929 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3588 event pairs, 16 based on Foata normal form. 93/773 useless extension candidates. Maximal degree in co-relation 3653. Up to 494 conditions per place. [2023-09-01 09:57:26,868 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 48 selfloop transitions, 13 changer transitions 31/96 dead transitions. [2023-09-01 09:57:26,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 824 flow [2023-09-01 09:57:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:57:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:57:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-09-01 09:57:26,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578030303030303 [2023-09-01 09:57:26,871 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-09-01 09:57:26,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-09-01 09:57:26,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:26,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-09-01 09:57:26,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:26,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2023-09-01 09:57:26,876 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2023-09-01 09:57:26,876 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 282 flow. Second operand 8 states and 763 transitions. [2023-09-01 09:57:26,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 824 flow [2023-09-01 09:57:26,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 784 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-09-01 09:57:26,886 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 314 flow [2023-09-01 09:57:26,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-09-01 09:57:26,887 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-09-01 09:57:26,887 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 314 flow [2023-09-01 09:57:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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) [2023-09-01 09:57:26,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:26,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:26,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:57:26,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:26,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1709375480, now seen corresponding path program 1 times [2023-09-01 09:57:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019125602] [2023-09-01 09:57:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:27,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:27,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019125602] [2023-09-01 09:57:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019125602] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:27,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:57:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046059411] [2023-09-01 09:57:27,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:27,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:57:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:57:27,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:57:27,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-09-01 09:57:27,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2023-09-01 09:57:27,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:27,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-09-01 09:57:27,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:27,146 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2023-09-01 09:57:27,147 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-09-01 09:57:27,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 556 events. 312/556 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2225 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2794. Up to 264 conditions per place. [2023-09-01 09:57:27,150 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2023-09-01 09:57:27,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 981 flow [2023-09-01 09:57:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:57:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:57:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2023-09-01 09:57:27,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2023-09-01 09:57:27,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2023-09-01 09:57:27,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2023-09-01 09:57:27,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:27,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2023-09-01 09:57:27,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2023-09-01 09:57:27,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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) [2023-09-01 09:57:27,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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) [2023-09-01 09:57:27,158 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 314 flow. Second operand 6 states and 549 transitions. [2023-09-01 09:57:27,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 981 flow [2023-09-01 09:57:27,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 741 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-09-01 09:57:27,167 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 236 flow [2023-09-01 09:57:27,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-09-01 09:57:27,168 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-09-01 09:57:27,168 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 236 flow [2023-09-01 09:57:27,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2023-09-01 09:57:27,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:27,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:27,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:57:27,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:27,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1665961714, now seen corresponding path program 1 times [2023-09-01 09:57:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259396300] [2023-09-01 09:57:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259396300] [2023-09-01 09:57:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259396300] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:57:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075695179] [2023-09-01 09:57:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:57:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:57:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:57:27,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-09-01 09:57:27,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2023-09-01 09:57:27,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:27,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-09-01 09:57:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:27,517 INFO L130 PetriNetUnfolder]: 127/252 cut-off events. [2023-09-01 09:57:27,517 INFO L131 PetriNetUnfolder]: For 673/795 co-relation queries the response was YES. [2023-09-01 09:57:27,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 252 events. 127/252 cut-off events. For 673/795 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 943 event pairs, 8 based on Foata normal form. 49/291 useless extension candidates. Maximal degree in co-relation 1023. Up to 88 conditions per place. [2023-09-01 09:57:27,519 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2023-09-01 09:57:27,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 514 flow [2023-09-01 09:57:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:57:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:57:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 743 transitions. [2023-09-01 09:57:27,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628787878787879 [2023-09-01 09:57:27,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 743 transitions. [2023-09-01 09:57:27,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 743 transitions. [2023-09-01 09:57:27,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:27,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 743 transitions. [2023-09-01 09:57:27,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.875) internal successors, (743), 8 states have internal predecessors, (743), 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) [2023-09-01 09:57:27,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2023-09-01 09:57:27,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2023-09-01 09:57:27,527 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 236 flow. Second operand 8 states and 743 transitions. [2023-09-01 09:57:27,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 514 flow [2023-09-01 09:57:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 464 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-09-01 09:57:27,531 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 226 flow [2023-09-01 09:57:27,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-09-01 09:57:27,533 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-09-01 09:57:27,533 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 226 flow [2023-09-01 09:57:27,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2023-09-01 09:57:27,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:27,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:57:27,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:57:27,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1227066264, now seen corresponding path program 1 times [2023-09-01 09:57:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334797107] [2023-09-01 09:57:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:27,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334797107] [2023-09-01 09:57:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334797107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907996244] [2023-09-01 09:57:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:27,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 165 [2023-09-01 09:57:27,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-09-01 09:57:27,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:27,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 165 [2023-09-01 09:57:27,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:27,764 INFO L130 PetriNetUnfolder]: 73/142 cut-off events. [2023-09-01 09:57:27,765 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-09-01 09:57:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 142 events. 73/142 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 608. Up to 85 conditions per place. [2023-09-01 09:57:27,766 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-09-01 09:57:27,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 389 flow [2023-09-01 09:57:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2023-09-01 09:57:27,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526060606060606 [2023-09-01 09:57:27,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2023-09-01 09:57:27,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2023-09-01 09:57:27,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:27,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2023-09-01 09:57:27,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2023-09-01 09:57:27,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:27,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-09-01 09:57:27,772 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 226 flow. Second operand 5 states and 434 transitions. [2023-09-01 09:57:27,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 389 flow [2023-09-01 09:57:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 310 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-09-01 09:57:27,776 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-09-01 09:57:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-09-01 09:57:27,777 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-09-01 09:57:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-09-01 09:57:27,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-09-01 09:57:27,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 09:57:27,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-09-01 09:57:27,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 09:57:27,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 09:57:27,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 09:57:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 09:57:27,781 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:27,784 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:57:27,785 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:57:27,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:57:27 BasicIcfg [2023-09-01 09:57:27,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:57:27,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:57:27,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:57:27,790 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:57:27,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:19" (3/4) ... [2023-09-01 09:57:27,793 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:57:27,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:57:27,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:57:27,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:57:27,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-09-01 09:57:27,805 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-09-01 09:57:27,805 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:57:27,806 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:57:27,806 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:57:27,838 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:57:27,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:57:27,839 INFO L158 Benchmark]: Toolchain (without parser) took 9131.80ms. Allocated memory was 83.9MB in the beginning and 262.1MB in the end (delta: 178.3MB). Free memory was 56.7MB in the beginning and 154.3MB in the end (delta: -97.6MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,839 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:57:27,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.19ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 56.2MB in the end (delta: 318.3kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.98ms. Allocated memory is still 83.9MB. Free memory was 56.2MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,840 INFO L158 Benchmark]: Boogie Preprocessor took 52.43ms. Allocated memory is still 83.9MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,841 INFO L158 Benchmark]: RCFGBuilder took 460.62ms. Allocated memory is still 83.9MB. Free memory was 52.8MB in the beginning and 38.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,841 INFO L158 Benchmark]: TraceAbstraction took 7956.18ms. Allocated memory was 83.9MB in the beginning and 262.1MB in the end (delta: 178.3MB). Free memory was 37.3MB in the beginning and 157.5MB in the end (delta: -120.2MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,841 INFO L158 Benchmark]: Witness Printer took 49.22ms. Allocated memory is still 262.1MB. Free memory was 157.5MB in the beginning and 154.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:27,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.19ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 56.2MB in the end (delta: 318.3kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.98ms. Allocated memory is still 83.9MB. Free memory was 56.2MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.43ms. Allocated memory is still 83.9MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.62ms. Allocated memory is still 83.9MB. Free memory was 52.8MB in the beginning and 38.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7956.18ms. Allocated memory was 83.9MB in the beginning and 262.1MB in the end (delta: 178.3MB). Free memory was 37.3MB in the beginning and 157.5MB in the end (delta: -120.2MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 49.22ms. Allocated memory is still 262.1MB. Free memory was 157.5MB in the beginning and 154.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 93 PlacesBefore, 33 PlacesAfterwards, 81 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 2668 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1418, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 785, independent conditional: 0, independent unconditional: 785, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1418, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 498 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 358 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1008 IncrementalHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 72 mSDtfsCounter, 1008 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=314occurred in iteration=10, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2023-09-01 09:57:27,873 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