./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_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/safe015_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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --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 09:56:29,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:56:29,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:56:29,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:56:29,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:56:29,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:56:29,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:56:29,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:56:29,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:56:29,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:56:29,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:56:29,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:56:29,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:56:29,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:56:29,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:56:29,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:56:29,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:56:29,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:56:29,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:56:29,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:56:29,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:56:29,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:56:29,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:56:29,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:56:29,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:56:29,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:56:29,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:56:29,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:56:29,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:56:29,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:56:29,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:56:29,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:56:29,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:56:29,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:56:29,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:56:29,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:56:29,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:56:29,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:56:29,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:56:29,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:56:29,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:56:29,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:56:29,893 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:56:29,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:56:29,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:56:29,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:56:29,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:56:29,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:56:29,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:56:29,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:56:29,897 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:56:29,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:56:29,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:56:29,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:56:29,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:56:29,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:56:29,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:56:29,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:56:29,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:56:29,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:56:29,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:56:29,900 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:56:29,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:56:29,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:56:29,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:56:29,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:56:29,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:29,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:56:29,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:56:29,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:56:29,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:56:29,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:56:29,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:56:29,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:56:29,903 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:56:29,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:56:29,903 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:56:29,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:56:30,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:56:30,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:56:30,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:56:30,241 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:56:30,241 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:56:30,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:31,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:56:31,817 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:56:31,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:31,837 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700cb52cd/d6a506a373034d0ea8021b62e93304b3/FLAGa37a59fa0 [2023-09-01 09:56:31,864 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700cb52cd/d6a506a373034d0ea8021b62e93304b3 [2023-09-01 09:56:31,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:56:31,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:56:31,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:31,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:56:31,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:56:31,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:31" (1/1) ... [2023-09-01 09:56:31,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bfe326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:31, skipping insertion in model container [2023-09-01 09:56:31,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:31" (1/1) ... [2023-09-01 09:56:31,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:56:31,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:56:32,060 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:56:32,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:32,259 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:56:32,270 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:56:32,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:32,332 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:32,333 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:32,339 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:56:32,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32 WrapperNode [2023-09-01 09:56:32,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:32,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:32,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:56:32,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:56:32,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,395 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-09-01 09:56:32,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:32,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:56:32,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:56:32,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:56:32,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:56:32,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:56:32,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:56:32,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:56:32,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (1/1) ... [2023-09-01 09:56:32,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:56:32,458 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 09:56:32,480 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 09:56:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:56:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:56:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:56:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:56:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:56:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:56:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:56:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:56:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:56:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:56:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:56:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:56:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:56:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:56:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:56:32,499 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 09:56:32,677 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:56:32,679 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:56:32,845 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:56:32,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:56:32,852 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:56:32,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:32 BoogieIcfgContainer [2023-09-01 09:56:32,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:56:32,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:56:32,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:56:32,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:56:32,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:56:31" (1/3) ... [2023-09-01 09:56:32,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cae0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:32, skipping insertion in model container [2023-09-01 09:56:32,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:32" (2/3) ... [2023-09-01 09:56:32,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cae0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:32, skipping insertion in model container [2023-09-01 09:56:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:32" (3/3) ... [2023-09-01 09:56:32,863 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:32,870 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:56:32,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:56:32,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:56:32,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:56:32,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:56:33,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-09-01 09:56:33,047 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-09-01 09:56:33,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:33,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:56:33,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-09-01 09:56:33,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-09-01 09:56:33,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:56:33,070 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-09-01 09:56:33,072 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-09-01 09:56:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-09-01 09:56:33,096 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-09-01 09:56:33,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:56:33,097 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:56:34,904 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-09-01 09:56:34,904 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-09-01 09:56:34,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:56:34,932 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;@78377b83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:56:34,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:56:34,940 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 09:56:34,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:34,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:34,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:34,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:34,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash -856294997, now seen corresponding path program 1 times [2023-09-01 09:56:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862472895] [2023-09-01 09:56:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:35,563 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 09:56:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862472895] [2023-09-01 09:56:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862472895] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:35,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:35,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:56:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602037526] [2023-09-01 09:56:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:56:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:56:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:56:35,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:35,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 09:56:35,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:35,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:35,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:35,800 INFO L130 PetriNetUnfolder]: 562/908 cut-off events. [2023-09-01 09:56:35,801 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 09:56:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3966 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-09-01 09:56:35,811 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-09-01 09:56:35,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-09-01 09:56:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:56:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:56:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-09-01 09:56:35,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565947242206235 [2023-09-01 09:56:35,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-09-01 09:56:35,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-09-01 09:56:35,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:35,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-09-01 09:56:35,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 09:56:35,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 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 09:56:35,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 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 09:56:35,844 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 236 transitions. [2023-09-01 09:56:35,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-09-01 09:56:35,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:56:35,848 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-09-01 09:56:35,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-09-01 09:56:35,853 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 09:56:35,853 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-09-01 09:56:35,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 09:56:35,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:35,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:35,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:56:35,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:35,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -775341748, now seen corresponding path program 1 times [2023-09-01 09:56:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:35,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002168806] [2023-09-01 09:56:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:35,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:36,078 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 09:56:36,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002168806] [2023-09-01 09:56:36,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002168806] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:36,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:36,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:36,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156903941] [2023-09-01 09:56:36,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:36,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:36,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:36,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:36,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 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 09:56:36,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:36,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:36,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:36,222 INFO L130 PetriNetUnfolder]: 521/845 cut-off events. [2023-09-01 09:56:36,222 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-09-01 09:56:36,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 845 events. 521/845 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3641 event pairs, 63 based on Foata normal form. 7/852 useless extension candidates. Maximal degree in co-relation 2402. Up to 390 conditions per place. [2023-09-01 09:56:36,228 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-09-01 09:56:36,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 244 flow [2023-09-01 09:56:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-09-01 09:56:36,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-09-01 09:56:36,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-09-01 09:56:36,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-09-01 09:56:36,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:36,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-09-01 09:56:36,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 09:56:36,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,241 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 310 transitions. [2023-09-01 09:56:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 244 flow [2023-09-01 09:56:36,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:36,248 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-09-01 09:56:36,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-09-01 09:56:36,249 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-09-01 09:56:36,249 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-09-01 09:56:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 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 09:56:36,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:36,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:56:36,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:36,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1734208010, now seen corresponding path program 1 times [2023-09-01 09:56:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483544900] [2023-09-01 09:56:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:36,426 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 09:56:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483544900] [2023-09-01 09:56:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483544900] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463928592] [2023-09-01 09:56:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:36,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:36,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:36,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 09:56:36,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:36,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:36,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:36,576 INFO L130 PetriNetUnfolder]: 493/802 cut-off events. [2023-09-01 09:56:36,576 INFO L131 PetriNetUnfolder]: For 762/762 co-relation queries the response was YES. [2023-09-01 09:56:36,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 802 events. 493/802 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3246 event pairs, 104 based on Foata normal form. 9/811 useless extension candidates. Maximal degree in co-relation 2548. Up to 308 conditions per place. [2023-09-01 09:56:36,581 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-09-01 09:56:36,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 304 flow [2023-09-01 09:56:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-09-01 09:56:36,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503597122302158 [2023-09-01 09:56:36,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-09-01 09:56:36,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-09-01 09:56:36,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:36,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-09-01 09:56:36,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 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 09:56:36,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,587 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 306 transitions. [2023-09-01 09:56:36,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 304 flow [2023-09-01 09:56:36,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:36,590 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 240 flow [2023-09-01 09:56:36,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-09-01 09:56:36,591 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-09-01 09:56:36,591 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 240 flow [2023-09-01 09:56:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 09:56:36,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:36,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:36,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:56:36,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:36,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1759548929, now seen corresponding path program 1 times [2023-09-01 09:56:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423529218] [2023-09-01 09:56:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:36,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:36,714 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 09:56:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423529218] [2023-09-01 09:56:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423529218] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:36,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217627483] [2023-09-01 09:56:36,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:36,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:36,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:36,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 09:56:36,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:36,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:36,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:36,844 INFO L130 PetriNetUnfolder]: 478/778 cut-off events. [2023-09-01 09:56:36,844 INFO L131 PetriNetUnfolder]: For 1350/1350 co-relation queries the response was YES. [2023-09-01 09:56:36,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 778 events. 478/778 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3185 event pairs, 67 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 2888. Up to 388 conditions per place. [2023-09-01 09:56:36,850 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 38 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2023-09-01 09:56:36,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 512 flow [2023-09-01 09:56:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-09-01 09:56:36,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-09-01 09:56:36,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-09-01 09:56:36,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-09-01 09:56:36,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:36,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-09-01 09:56:36,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 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 09:56:36,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:36,855 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 240 flow. Second operand 4 states and 315 transitions. [2023-09-01 09:56:36,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 512 flow [2023-09-01 09:56:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:36,861 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 435 flow [2023-09-01 09:56:36,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-09-01 09:56:36,862 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-09-01 09:56:36,862 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 435 flow [2023-09-01 09:56:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 09:56:36,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:36,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:56:36,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:36,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2074098976, now seen corresponding path program 1 times [2023-09-01 09:56:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141298530] [2023-09-01 09:56:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:36,976 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 09:56:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141298530] [2023-09-01 09:56:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141298530] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:36,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693806109] [2023-09-01 09:56:36,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:36,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:37,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:37,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 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 09:56:37,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:37,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:37,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:37,105 INFO L130 PetriNetUnfolder]: 455/742 cut-off events. [2023-09-01 09:56:37,106 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-09-01 09:56:37,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 742 events. 455/742 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3053 event pairs, 87 based on Foata normal form. 5/747 useless extension candidates. Maximal degree in co-relation 3186. Up to 319 conditions per place. [2023-09-01 09:56:37,112 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 42 selfloop transitions, 24 changer transitions 0/66 dead transitions. [2023-09-01 09:56:37,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 717 flow [2023-09-01 09:56:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-09-01 09:56:37,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-09-01 09:56:37,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-09-01 09:56:37,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-09-01 09:56:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:37,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-09-01 09:56:37,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 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 09:56:37,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:37,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:37,117 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 435 flow. Second operand 4 states and 312 transitions. [2023-09-01 09:56:37,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 717 flow [2023-09-01 09:56:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:56:37,125 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 638 flow [2023-09-01 09:56:37,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-09-01 09:56:37,127 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-09-01 09:56:37,127 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 638 flow [2023-09-01 09:56:37,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 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 09:56:37,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:37,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:37,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:56:37,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:37,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash 127420696, now seen corresponding path program 1 times [2023-09-01 09:56:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:37,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498996587] [2023-09-01 09:56:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:37,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:37,321 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 09:56:37,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498996587] [2023-09-01 09:56:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498996587] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:37,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676415079] [2023-09-01 09:56:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:37,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:37,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-09-01 09:56:37,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 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 09:56:37,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:37,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-09-01 09:56:37,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:37,464 INFO L130 PetriNetUnfolder]: 320/600 cut-off events. [2023-09-01 09:56:37,464 INFO L131 PetriNetUnfolder]: For 3944/4015 co-relation queries the response was YES. [2023-09-01 09:56:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 600 events. 320/600 cut-off events. For 3944/4015 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3112 event pairs, 44 based on Foata normal form. 71/663 useless extension candidates. Maximal degree in co-relation 2724. Up to 296 conditions per place. [2023-09-01 09:56:37,471 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 73 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2023-09-01 09:56:37,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 1424 flow [2023-09-01 09:56:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-09-01 09:56:37,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581294964028777 [2023-09-01 09:56:37,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-09-01 09:56:37,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-09-01 09:56:37,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:37,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-09-01 09:56:37,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 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 09:56:37,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:37,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:37,479 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 638 flow. Second operand 5 states and 404 transitions. [2023-09-01 09:56:37,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 1424 flow [2023-09-01 09:56:37,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 103 transitions, 1407 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:37,487 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 689 flow [2023-09-01 09:56:37,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-09-01 09:56:37,489 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-09-01 09:56:37,489 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 689 flow [2023-09-01 09:56:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 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 09:56:37,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:37,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:56:37,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:37,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash -328862597, now seen corresponding path program 1 times [2023-09-01 09:56:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891415055] [2023-09-01 09:56:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:37,691 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 09:56:37,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891415055] [2023-09-01 09:56:37,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891415055] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:37,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:37,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362815758] [2023-09-01 09:56:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:37,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-09-01 09:56:37,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 689 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 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 09:56:37,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:37,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-09-01 09:56:37,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:37,846 INFO L130 PetriNetUnfolder]: 288/564 cut-off events. [2023-09-01 09:56:37,846 INFO L131 PetriNetUnfolder]: For 4222/4420 co-relation queries the response was YES. [2023-09-01 09:56:37,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 564 events. 288/564 cut-off events. For 4222/4420 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3030 event pairs, 15 based on Foata normal form. 147/703 useless extension candidates. Maximal degree in co-relation 3013. Up to 245 conditions per place. [2023-09-01 09:56:37,851 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 79 selfloop transitions, 15 changer transitions 8/122 dead transitions. [2023-09-01 09:56:37,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 122 transitions, 1673 flow [2023-09-01 09:56:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:56:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:56:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2023-09-01 09:56:37,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806783144912642 [2023-09-01 09:56:37,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2023-09-01 09:56:37,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2023-09-01 09:56:37,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:37,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2023-09-01 09:56:37,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 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 09:56:37,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 09:56:37,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 09:56:37,857 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 689 flow. Second operand 7 states and 565 transitions. [2023-09-01 09:56:37,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 122 transitions, 1673 flow [2023-09-01 09:56:37,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 122 transitions, 1669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:37,866 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 784 flow [2023-09-01 09:56:37,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2023-09-01 09:56:37,867 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-09-01 09:56:37,867 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 784 flow [2023-09-01 09:56:37,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 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 09:56:37,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:37,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:56:37,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:37,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash 202149215, now seen corresponding path program 1 times [2023-09-01 09:56:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285761981] [2023-09-01 09:56:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:38,000 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 09:56:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285761981] [2023-09-01 09:56:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285761981] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:38,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:38,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:38,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125365191] [2023-09-01 09:56:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:38,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:38,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:38,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:38,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 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 09:56:38,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:38,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:38,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:38,148 INFO L130 PetriNetUnfolder]: 512/936 cut-off events. [2023-09-01 09:56:38,148 INFO L131 PetriNetUnfolder]: For 7786/7786 co-relation queries the response was YES. [2023-09-01 09:56:38,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 936 events. 512/936 cut-off events. For 7786/7786 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4746 event pairs, 87 based on Foata normal form. 6/942 useless extension candidates. Maximal degree in co-relation 5938. Up to 390 conditions per place. [2023-09-01 09:56:38,156 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 41 selfloop transitions, 31 changer transitions 35/107 dead transitions. [2023-09-01 09:56:38,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 107 transitions, 1365 flow [2023-09-01 09:56:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-09-01 09:56:38,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-09-01 09:56:38,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-09-01 09:56:38,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-09-01 09:56:38,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:38,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-09-01 09:56:38,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 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 09:56:38,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:38,161 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 09:56:38,161 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 784 flow. Second operand 4 states and 312 transitions. [2023-09-01 09:56:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 107 transitions, 1365 flow [2023-09-01 09:56:38,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 1262 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:38,184 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 770 flow [2023-09-01 09:56:38,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-09-01 09:56:38,185 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-09-01 09:56:38,185 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 770 flow [2023-09-01 09:56:38,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 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 09:56:38,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:38,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:38,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:56:38,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:56:38,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash 504430524, now seen corresponding path program 1 times [2023-09-01 09:56:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776674963] [2023-09-01 09:56:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:38,322 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 09:56:38,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776674963] [2023-09-01 09:56:38,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776674963] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:38,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:56:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062934413] [2023-09-01 09:56:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:38,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:56:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:56:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:56:38,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-09-01 09:56:38,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 770 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 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 09:56:38,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:38,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-09-01 09:56:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:38,425 INFO L130 PetriNetUnfolder]: 136/290 cut-off events. [2023-09-01 09:56:38,425 INFO L131 PetriNetUnfolder]: For 2387/2445 co-relation queries the response was YES. [2023-09-01 09:56:38,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 290 events. 136/290 cut-off events. For 2387/2445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1274 event pairs, 12 based on Foata normal form. 38/319 useless extension candidates. Maximal degree in co-relation 1710. Up to 88 conditions per place. [2023-09-01 09:56:38,428 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 19 selfloop transitions, 10 changer transitions 47/84 dead transitions. [2023-09-01 09:56:38,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 1274 flow [2023-09-01 09:56:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:56:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:56:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2023-09-01 09:56:38,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673175745118191 [2023-09-01 09:56:38,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2023-09-01 09:56:38,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2023-09-01 09:56:38,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:38,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2023-09-01 09:56:38,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 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 09:56:38,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 09:56:38,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 09:56:38,434 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 770 flow. Second operand 7 states and 552 transitions. [2023-09-01 09:56:38,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 1274 flow [2023-09-01 09:56:38,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 1248 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-09-01 09:56:38,442 INFO L231 Difference]: Finished difference. Result has 67 places, 32 transitions, 411 flow [2023-09-01 09:56:38,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=67, PETRI_TRANSITIONS=32} [2023-09-01 09:56:38,443 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2023-09-01 09:56:38,443 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 32 transitions, 411 flow [2023-09-01 09:56:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 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 09:56:38,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:38,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:38,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:56:38,444 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 1 more)] === [2023-09-01 09:56:38,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -422245089, now seen corresponding path program 1 times [2023-09-01 09:56:38,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:38,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106195390] [2023-09-01 09:56:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:38,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:38,626 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 09:56:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106195390] [2023-09-01 09:56:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106195390] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:38,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254077400] [2023-09-01 09:56:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:38,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:38,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:38,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 32 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 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 09:56:38,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:38,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:38,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:38,696 INFO L130 PetriNetUnfolder]: 42/109 cut-off events. [2023-09-01 09:56:38,696 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2023-09-01 09:56:38,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 109 events. 42/109 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 3 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 755. Up to 61 conditions per place. [2023-09-01 09:56:38,698 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 22 selfloop transitions, 7 changer transitions 26/55 dead transitions. [2023-09-01 09:56:38,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 738 flow [2023-09-01 09:56:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-09-01 09:56:38,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410071942446043 [2023-09-01 09:56:38,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-09-01 09:56:38,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-09-01 09:56:38,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:38,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-09-01 09:56:38,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 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 09:56:38,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:38,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:38,704 INFO L175 Difference]: Start difference. First operand has 67 places, 32 transitions, 411 flow. Second operand 5 states and 376 transitions. [2023-09-01 09:56:38,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 738 flow [2023-09-01 09:56:38,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 527 flow, removed 26 selfloop flow, removed 21 redundant places. [2023-09-01 09:56:38,709 INFO L231 Difference]: Finished difference. Result has 49 places, 23 transitions, 178 flow [2023-09-01 09:56:38,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=23} [2023-09-01 09:56:38,711 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-09-01 09:56:38,711 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 23 transitions, 178 flow [2023-09-01 09:56:38,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 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 09:56:38,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:38,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:56:38,712 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 1 more)] === [2023-09-01 09:56:38,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1969732305, now seen corresponding path program 2 times [2023-09-01 09:56:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758508460] [2023-09-01 09:56:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:38,857 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 09:56:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758508460] [2023-09-01 09:56:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758508460] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:56:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902212032] [2023-09-01 09:56:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:38,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-09-01 09:56:38,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 23 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 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 09:56:38,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:38,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-09-01 09:56:38,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:38,908 INFO L130 PetriNetUnfolder]: 13/40 cut-off events. [2023-09-01 09:56:38,908 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-09-01 09:56:38,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 40 events. 13/40 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 196. Up to 17 conditions per place. [2023-09-01 09:56:38,909 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-09-01 09:56:38,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 29 transitions, 268 flow [2023-09-01 09:56:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:56:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:56:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 430 transitions. [2023-09-01 09:56:38,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155875299760192 [2023-09-01 09:56:38,911 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 430 transitions. [2023-09-01 09:56:38,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 430 transitions. [2023-09-01 09:56:38,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:38,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 430 transitions. [2023-09-01 09:56:38,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 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 09:56:38,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 09:56:38,914 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 09:56:38,915 INFO L175 Difference]: Start difference. First operand has 49 places, 23 transitions, 178 flow. Second operand 6 states and 430 transitions. [2023-09-01 09:56:38,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 29 transitions, 268 flow [2023-09-01 09:56:38,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 190 flow, removed 3 selfloop flow, removed 17 redundant places. [2023-09-01 09:56:38,916 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-09-01 09:56:38,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-09-01 09:56:38,917 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-09-01 09:56:38,917 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-09-01 09:56:38,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 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 09:56:38,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:56:38,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:56:38,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:56:38,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:56:38,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:56:38,921 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:38,926 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:56:38,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:56:38,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:56:38 BasicIcfg [2023-09-01 09:56:38,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:56:38,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:56:38,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:56:38,930 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:56:38,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:32" (3/4) ... [2023-09-01 09:56:38,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:56:38,938 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:56:38,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:56:38,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:56:38,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:56:38,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:56:38,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:56:38,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:56:38,976 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:56:38,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:56:38,977 INFO L158 Benchmark]: Toolchain (without parser) took 7110.00ms. Allocated memory was 67.1MB in the beginning and 159.4MB in the end (delta: 92.3MB). Free memory was 37.6MB in the beginning and 123.0MB in the end (delta: -85.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,978 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:38,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.14ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 59.3MB in the end (delta: -21.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.93ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,978 INFO L158 Benchmark]: Boogie Preprocessor took 24.71ms. Allocated memory is still 88.1MB. Free memory was 57.2MB in the beginning and 56.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,979 INFO L158 Benchmark]: RCFGBuilder took 433.38ms. Allocated memory is still 88.1MB. Free memory was 55.6MB in the beginning and 42.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,979 INFO L158 Benchmark]: TraceAbstraction took 6072.29ms. Allocated memory was 88.1MB in the beginning and 159.4MB in the end (delta: 71.3MB). Free memory was 41.3MB in the beginning and 126.2MB in the end (delta: -84.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:38,979 INFO L158 Benchmark]: Witness Printer took 47.23ms. Allocated memory is still 159.4MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:38,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.14ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 59.3MB in the end (delta: -21.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.93ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.71ms. Allocated memory is still 88.1MB. Free memory was 57.2MB in the beginning and 56.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.38ms. Allocated memory is still 88.1MB. Free memory was 55.6MB in the beginning and 42.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6072.29ms. Allocated memory was 88.1MB in the beginning and 159.4MB in the end (delta: 71.3MB). Free memory was 41.3MB in the beginning and 126.2MB in the end (delta: -84.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 47.23ms. Allocated memory is still 159.4MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1034, independent: 957, independent conditional: 0, independent unconditional: 957, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 558, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1034, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 558, unknown conditional: 0, unknown unconditional: 558] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 620 IncrementalHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 65 mSDtfsCounter, 620 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=784occurred in iteration=7, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:56:39,007 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