./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:20:31,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:20:31,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:20:31,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:20:31,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:20:31,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:20:31,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:20:31,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:20:31,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:20:31,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:20:31,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:20:31,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:20:31,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:20:31,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:20:31,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:20:31,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:20:31,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:20:31,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:20:31,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:20:31,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:20:31,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:20:31,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:20:31,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:20:31,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:20:31,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:20:31,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:20:31,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:20:31,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:20:31,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:20:31,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:20:31,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:20:31,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:20:31,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:20:31,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:20:31,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:20:31,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:20:31,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:20:31,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:20:31,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:20:31,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:20:31,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:20:31,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:20:31,889 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:20:31,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:20:31,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:20:31,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:20:31,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:20:31,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:20:31,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:20:31,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:20:31,893 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:20:31,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:20:31,894 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:20:31,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:20:31,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:20:31,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:20:31,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:20:31,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:20:31,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:20:31,895 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:20:31,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:20:31,896 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:20:31,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:20:31,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:20:31,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:20:31,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:20:31,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:20:31,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:20:31,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:20:31,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:20:31,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:20:31,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:20:31,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:20:31,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:20:31,899 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:20:31,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:20:31,899 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:20:31,900 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:20:32,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:20:32,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:20:32,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:20:32,244 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:20:32,245 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:20:32,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 23:20:33,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:20:33,692 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:20:33,697 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 23:20:33,719 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d68c376/02177246d34b407db14ab1f5a5799ea5/FLAG0b81c648c [2023-08-30 23:20:33,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d68c376/02177246d34b407db14ab1f5a5799ea5 [2023-08-30 23:20:33,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:20:33,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:20:33,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:20:33,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:20:33,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:20:33,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:20:33" (1/1) ... [2023-08-30 23:20:33,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3bffae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:33, skipping insertion in model container [2023-08-30 23:20:33,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:20:33" (1/1) ... [2023-08-30 23:20:33,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:20:33,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:20:33,970 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 23:20:34,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:20:34,133 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:20:34,144 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 23:20:34,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:20:34,241 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:20:34,241 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:20:34,246 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:20:34,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34 WrapperNode [2023-08-30 23:20:34,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:20:34,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:20:34,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:20:34,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:20:34,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,286 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-30 23:20:34,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:20:34,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:20:34,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:20:34,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:20:34,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:20:34,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:20:34,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:20:34,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:20:34,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (1/1) ... [2023-08-30 23:20:34,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:20:34,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:20:34,350 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) [2023-08-30 23:20:34,361 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 [2023-08-30 23:20:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:20:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:20:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:20:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:20:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:20:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:20:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:20:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:20:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:20:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:20:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:20:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 23:20:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 23:20:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:20:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:20:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:20:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:20:34,394 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:20:34,587 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:20:34,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:20:34,805 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:20:34,811 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:20:34,814 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:20:34,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:20:34 BoogieIcfgContainer [2023-08-30 23:20:34,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:20:34,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:20:34,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:20:34,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:20:34,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:20:33" (1/3) ... [2023-08-30 23:20:34,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606d307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:20:34, skipping insertion in model container [2023-08-30 23:20:34,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:20:34" (2/3) ... [2023-08-30 23:20:34,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606d307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:20:34, skipping insertion in model container [2023-08-30 23:20:34,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:20:34" (3/3) ... [2023-08-30 23:20:34,826 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 23:20:34,833 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:20:34,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:20:34,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:20:34,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:20:34,933 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:20:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2023-08-30 23:20:35,045 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2023-08-30 23:20:35,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:20:35,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-30 23:20:35,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2023-08-30 23:20:35,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2023-08-30 23:20:35,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:20:35,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 81 transitions, 174 flow [2023-08-30 23:20:35,072 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 81 transitions, 174 flow [2023-08-30 23:20:35,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 81 transitions, 174 flow [2023-08-30 23:20:35,105 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2023-08-30 23:20:35,106 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:20:35,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 1/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-30 23:20:35,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-08-30 23:20:37,213 INFO L134 LiptonReduction]: Checked pairs total: 2668 [2023-08-30 23:20:37,213 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-30 23:20:37,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:20:37,230 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;@b0381d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:20:37,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 23:20:37,236 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-08-30 23:20:37,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:20:37,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:37,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:37,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:37,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -109062191, now seen corresponding path program 1 times [2023-08-30 23:20:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757907874] [2023-08-30 23:20:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:37,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757907874] [2023-08-30 23:20:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757907874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:37,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:37,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:20:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098131672] [2023-08-30 23:20:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:20:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:20:37,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:20:37,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:37,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:37,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:37,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:37,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:38,215 INFO L130 PetriNetUnfolder]: 1747/2539 cut-off events. [2023-08-30 23:20:38,216 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-08-30 23:20:38,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11322 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2023-08-30 23:20:38,240 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-08-30 23:20:38,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2023-08-30 23:20:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:20:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:20:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-30 23:20:38,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2023-08-30 23:20:38,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-30 23:20:38,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-30 23:20:38,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:38,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-30 23:20:38,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,278 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 288 transitions. [2023-08-30 23:20:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2023-08-30 23:20:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:20:38,284 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2023-08-30 23:20:38,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 23:20:38,291 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 23:20:38,292 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2023-08-30 23:20:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:38,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:20:38,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:38,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash 914038522, now seen corresponding path program 1 times [2023-08-30 23:20:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384848215] [2023-08-30 23:20:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:38,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:38,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:38,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384848215] [2023-08-30 23:20:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384848215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:38,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:38,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:20:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544193427] [2023-08-30 23:20:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:38,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:38,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:38,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:38,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:38,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:38,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:38,841 INFO L130 PetriNetUnfolder]: 1647/2406 cut-off events. [2023-08-30 23:20:38,841 INFO L131 PetriNetUnfolder]: For 401/401 co-relation queries the response was YES. [2023-08-30 23:20:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 2406 events. 1647/2406 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10611 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 6094. Up to 1391 conditions per place. [2023-08-30 23:20:38,855 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-30 23:20:38,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 228 flow [2023-08-30 23:20:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:20:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:20:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-30 23:20:38,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-30 23:20:38,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-30 23:20:38,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-30 23:20:38,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:38,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-30 23:20:38,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,861 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,861 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 374 transitions. [2023-08-30 23:20:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 228 flow [2023-08-30 23:20:38,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:20:38,869 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2023-08-30 23:20:38,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 23:20:38,870 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-30 23:20:38,870 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2023-08-30 23:20:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:38,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:38,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:20:38,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:38,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 914038677, now seen corresponding path program 1 times [2023-08-30 23:20:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662280815] [2023-08-30 23:20:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:38,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662280815] [2023-08-30 23:20:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662280815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:39,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:20:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685302644] [2023-08-30 23:20:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:39,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:20:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:20:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:20:39,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 165 [2023-08-30 23:20:39,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:39,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 165 [2023-08-30 23:20:39,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:39,217 INFO L130 PetriNetUnfolder]: 1414/2106 cut-off events. [2023-08-30 23:20:39,218 INFO L131 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2023-08-30 23:20:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5732 conditions, 2106 events. 1414/2106 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9729 event pairs, 411 based on Foata normal form. 12/2036 useless extension candidates. Maximal degree in co-relation 5718. Up to 1733 conditions per place. [2023-08-30 23:20:39,232 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-30 23:20:39,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 217 flow [2023-08-30 23:20:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:20:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:20:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 23:20:39,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-08-30 23:20:39,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 23:20:39,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 23:20:39,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:39,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 23:20:39,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,238 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 3 states and 297 transitions. [2023-08-30 23:20:39,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 217 flow [2023-08-30 23:20:39,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:20:39,246 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 131 flow [2023-08-30 23:20:39,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 23:20:39,247 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 23:20:39,250 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 131 flow [2023-08-30 23:20:39,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:39,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:39,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:20:39,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:39,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1822099019, now seen corresponding path program 1 times [2023-08-30 23:20:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399488571] [2023-08-30 23:20:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399488571] [2023-08-30 23:20:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399488571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:39,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:20:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651751032] [2023-08-30 23:20:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:39,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:39,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:39,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:39,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:39,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:39,659 INFO L130 PetriNetUnfolder]: 1489/2182 cut-off events. [2023-08-30 23:20:39,659 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-08-30 23:20:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 2182 events. 1489/2182 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9426 event pairs, 394 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6120. Up to 1369 conditions per place. [2023-08-30 23:20:39,672 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-30 23:20:39,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 316 flow [2023-08-30 23:20:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:20:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:20:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-08-30 23:20:39,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712121212121212 [2023-08-30 23:20:39,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-08-30 23:20:39,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-08-30 23:20:39,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:39,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-08-30 23:20:39,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,682 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 131 flow. Second operand 4 states and 377 transitions. [2023-08-30 23:20:39,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 316 flow [2023-08-30 23:20:39,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:20:39,687 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 189 flow [2023-08-30 23:20:39,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-30 23:20:39,688 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-30 23:20:39,688 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 189 flow [2023-08-30 23:20:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:39,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:20:39,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:39,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2077298808, now seen corresponding path program 1 times [2023-08-30 23:20:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:39,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979188200] [2023-08-30 23:20:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:39,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:39,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:39,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979188200] [2023-08-30 23:20:39,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979188200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:39,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:39,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:20:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444638787] [2023-08-30 23:20:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:39,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 165 [2023-08-30 23:20:39,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:39,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:39,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 165 [2023-08-30 23:20:39,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:40,139 INFO L130 PetriNetUnfolder]: 1530/2367 cut-off events. [2023-08-30 23:20:40,140 INFO L131 PetriNetUnfolder]: For 4454/4718 co-relation queries the response was YES. [2023-08-30 23:20:40,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 2367 events. 1530/2367 cut-off events. For 4454/4718 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13056 event pairs, 321 based on Foata normal form. 165/2447 useless extension candidates. Maximal degree in co-relation 7025. Up to 960 conditions per place. [2023-08-30 23:20:40,154 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 40 selfloop transitions, 4 changer transitions 12/62 dead transitions. [2023-08-30 23:20:40,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 461 flow [2023-08-30 23:20:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:20:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:20:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-08-30 23:20:40,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2023-08-30 23:20:40,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-08-30 23:20:40,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-08-30 23:20:40,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:40,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-08-30 23:20:40,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,160 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 189 flow. Second operand 4 states and 392 transitions. [2023-08-30 23:20:40,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 461 flow [2023-08-30 23:20:40,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:20:40,170 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 202 flow [2023-08-30 23:20:40,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-08-30 23:20:40,171 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-30 23:20:40,171 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 202 flow [2023-08-30 23:20:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:40,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:40,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:20:40,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:40,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1566534828, now seen corresponding path program 1 times [2023-08-30 23:20:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:40,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075723053] [2023-08-30 23:20:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075723053] [2023-08-30 23:20:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075723053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:20:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889137438] [2023-08-30 23:20:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:40,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:20:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:20:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:20:40,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:40,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:40,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:40,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:40,503 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2023-08-30 23:20:40,503 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-08-30 23:20:40,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 2026 events. 1333/2026 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8962 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6426. Up to 888 conditions per place. [2023-08-30 23:20:40,513 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-08-30 23:20:40,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 427 flow [2023-08-30 23:20:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:20:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:20:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-08-30 23:20:40,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2023-08-30 23:20:40,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-08-30 23:20:40,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-08-30 23:20:40,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:40,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-08-30 23:20:40,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,519 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 202 flow. Second operand 5 states and 465 transitions. [2023-08-30 23:20:40,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 427 flow [2023-08-30 23:20:40,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 403 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:20:40,528 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 180 flow [2023-08-30 23:20:40,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-08-30 23:20:40,529 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-30 23:20:40,529 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 180 flow [2023-08-30 23:20:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:40,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:40,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:20:40,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:40,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -388138933, now seen corresponding path program 1 times [2023-08-30 23:20:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:40,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699940258] [2023-08-30 23:20:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699940258] [2023-08-30 23:20:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699940258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:40,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:20:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498940797] [2023-08-30 23:20:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:40,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:40,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:40,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:40,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:40,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:40,778 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2023-08-30 23:20:40,779 INFO L131 PetriNetUnfolder]: For 2133/2133 co-relation queries the response was YES. [2023-08-30 23:20:40,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 1195 events. 770/1195 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5008 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3686. Up to 600 conditions per place. [2023-08-30 23:20:40,786 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-08-30 23:20:40,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 295 flow [2023-08-30 23:20:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:20:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:20:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-08-30 23:20:40,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-08-30 23:20:40,788 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-08-30 23:20:40,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-08-30 23:20:40,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:40,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-08-30 23:20:40,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,793 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 180 flow. Second operand 4 states and 370 transitions. [2023-08-30 23:20:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 295 flow [2023-08-30 23:20:40,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 260 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 23:20:40,800 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 156 flow [2023-08-30 23:20:40,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-08-30 23:20:40,800 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-30 23:20:40,801 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 156 flow [2023-08-30 23:20:40,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:40,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:40,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:20:40,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:40,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1394447200, now seen corresponding path program 2 times [2023-08-30 23:20:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544050288] [2023-08-30 23:20:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:41,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544050288] [2023-08-30 23:20:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544050288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:20:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727695778] [2023-08-30 23:20:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:41,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-08-30 23:20:41,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:41,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-08-30 23:20:41,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:41,164 INFO L130 PetriNetUnfolder]: 605/1012 cut-off events. [2023-08-30 23:20:41,165 INFO L131 PetriNetUnfolder]: For 2033/2076 co-relation queries the response was YES. [2023-08-30 23:20:41,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1012 events. 605/1012 cut-off events. For 2033/2076 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5086 event pairs, 207 based on Foata normal form. 51/1007 useless extension candidates. Maximal degree in co-relation 2888. Up to 662 conditions per place. [2023-08-30 23:20:41,175 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-08-30 23:20:41,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 523 flow [2023-08-30 23:20:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:20:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:20:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-08-30 23:20:41,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806060606060606 [2023-08-30 23:20:41,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-08-30 23:20:41,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-08-30 23:20:41,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:41,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-08-30 23:20:41,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,181 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 156 flow. Second operand 5 states and 479 transitions. [2023-08-30 23:20:41,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 523 flow [2023-08-30 23:20:41,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 465 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 23:20:41,185 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 179 flow [2023-08-30 23:20:41,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-08-30 23:20:41,188 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-30 23:20:41,188 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 179 flow [2023-08-30 23:20:41,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:41,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:20:41,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:41,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 821537320, now seen corresponding path program 1 times [2023-08-30 23:20:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58024983] [2023-08-30 23:20:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:41,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:41,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58024983] [2023-08-30 23:20:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58024983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:41,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:20:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282931386] [2023-08-30 23:20:41,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:41,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:20:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:20:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:20:41,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-08-30 23:20:41,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:41,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-08-30 23:20:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:41,493 INFO L130 PetriNetUnfolder]: 429/756 cut-off events. [2023-08-30 23:20:41,494 INFO L131 PetriNetUnfolder]: For 1961/2154 co-relation queries the response was YES. [2023-08-30 23:20:41,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 756 events. 429/756 cut-off events. For 1961/2154 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3707 event pairs, 56 based on Foata normal form. 58/787 useless extension candidates. Maximal degree in co-relation 3012. Up to 511 conditions per place. [2023-08-30 23:20:41,498 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 13 changer transitions 8/80 dead transitions. [2023-08-30 23:20:41,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 597 flow [2023-08-30 23:20:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:20:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:20:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-30 23:20:41,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2023-08-30 23:20:41,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-30 23:20:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-30 23:20:41,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:41,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-30 23:20:41,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,505 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 179 flow. Second operand 6 states and 575 transitions. [2023-08-30 23:20:41,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 597 flow [2023-08-30 23:20:41,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 590 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 23:20:41,510 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 282 flow [2023-08-30 23:20:41,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-30 23:20:41,511 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-30 23:20:41,511 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 282 flow [2023-08-30 23:20:41,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:41,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:41,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:20:41,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:41,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash -302162279, now seen corresponding path program 1 times [2023-08-30 23:20:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:41,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578790176] [2023-08-30 23:20:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:41,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578790176] [2023-08-30 23:20:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578790176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:41,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:20:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922839293] [2023-08-30 23:20:41,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:41,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:20:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:41,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:20:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:20:41,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-08-30 23:20:41,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:41,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-08-30 23:20:41,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:41,831 INFO L130 PetriNetUnfolder]: 396/713 cut-off events. [2023-08-30 23:20:41,831 INFO L131 PetriNetUnfolder]: For 2476/2929 co-relation queries the response was YES. [2023-08-30 23:20:41,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 713 events. 396/713 cut-off events. For 2476/2929 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3588 event pairs, 16 based on Foata normal form. 93/773 useless extension candidates. Maximal degree in co-relation 3653. Up to 494 conditions per place. [2023-08-30 23:20:41,835 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 48 selfloop transitions, 13 changer transitions 31/96 dead transitions. [2023-08-30 23:20:41,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 824 flow [2023-08-30 23:20:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:20:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:20:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-08-30 23:20:41,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578030303030303 [2023-08-30 23:20:41,838 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-08-30 23:20:41,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-08-30 23:20:41,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:41,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-08-30 23:20:41,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,843 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 282 flow. Second operand 8 states and 763 transitions. [2023-08-30 23:20:41,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 824 flow [2023-08-30 23:20:41,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 784 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-30 23:20:41,853 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 314 flow [2023-08-30 23:20:41,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-08-30 23:20:41,855 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-30 23:20:41,855 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 314 flow [2023-08-30 23:20:41,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:41,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:41,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:20:41,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:41,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1709375480, now seen corresponding path program 1 times [2023-08-30 23:20:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:41,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140984530] [2023-08-30 23:20:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140984530] [2023-08-30 23:20:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140984530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:20:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531196477] [2023-08-30 23:20:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:20:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:20:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:20:42,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 165 [2023-08-30 23:20:42,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:42,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 165 [2023-08-30 23:20:42,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:42,117 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2023-08-30 23:20:42,118 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-08-30 23:20:42,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 556 events. 312/556 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2225 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2794. Up to 264 conditions per place. [2023-08-30 23:20:42,121 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2023-08-30 23:20:42,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 981 flow [2023-08-30 23:20:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:20:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:20:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2023-08-30 23:20:42,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2023-08-30 23:20:42,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2023-08-30 23:20:42,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2023-08-30 23:20:42,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2023-08-30 23:20:42,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,127 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,128 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 314 flow. Second operand 6 states and 549 transitions. [2023-08-30 23:20:42,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 981 flow [2023-08-30 23:20:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 741 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-08-30 23:20:42,136 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 236 flow [2023-08-30 23:20:42,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-30 23:20:42,137 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-08-30 23:20:42,137 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 236 flow [2023-08-30 23:20:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:42,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:20:42,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:42,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1665961714, now seen corresponding path program 1 times [2023-08-30 23:20:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41676179] [2023-08-30 23:20:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41676179] [2023-08-30 23:20:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41676179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:20:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233403952] [2023-08-30 23:20:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:20:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:20:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:20:42,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-08-30 23:20:42,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:42,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-08-30 23:20:42,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:42,400 INFO L130 PetriNetUnfolder]: 127/252 cut-off events. [2023-08-30 23:20:42,400 INFO L131 PetriNetUnfolder]: For 673/795 co-relation queries the response was YES. [2023-08-30 23:20:42,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 252 events. 127/252 cut-off events. For 673/795 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 943 event pairs, 8 based on Foata normal form. 49/291 useless extension candidates. Maximal degree in co-relation 1023. Up to 88 conditions per place. [2023-08-30 23:20:42,402 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2023-08-30 23:20:42,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 514 flow [2023-08-30 23:20:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:20:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:20:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 743 transitions. [2023-08-30 23:20:42,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628787878787879 [2023-08-30 23:20:42,405 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 743 transitions. [2023-08-30 23:20:42,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 743 transitions. [2023-08-30 23:20:42,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:42,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 743 transitions. [2023-08-30 23:20:42,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.875) internal successors, (743), 8 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,409 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 236 flow. Second operand 8 states and 743 transitions. [2023-08-30 23:20:42,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 514 flow [2023-08-30 23:20:42,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 464 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 23:20:42,413 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 226 flow [2023-08-30 23:20:42,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-08-30 23:20:42,414 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-08-30 23:20:42,414 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 226 flow [2023-08-30 23:20:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:20:42,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:42,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:20:42,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:20:42,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:20:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1227066264, now seen corresponding path program 1 times [2023-08-30 23:20:42,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:20:42,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861746842] [2023-08-30 23:20:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:20:42,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:20:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:20:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:20:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:20:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861746842] [2023-08-30 23:20:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861746842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:20:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:20:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:20:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982291376] [2023-08-30 23:20:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:20:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:20:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:20:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:20:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:20:42,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 165 [2023-08-30 23:20:42,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:20:42,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 165 [2023-08-30 23:20:42,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:20:42,617 INFO L130 PetriNetUnfolder]: 73/142 cut-off events. [2023-08-30 23:20:42,617 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-08-30 23:20:42,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 142 events. 73/142 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 608. Up to 85 conditions per place. [2023-08-30 23:20:42,618 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-30 23:20:42,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 389 flow [2023-08-30 23:20:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:20:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:20:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2023-08-30 23:20:42,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526060606060606 [2023-08-30 23:20:42,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2023-08-30 23:20:42,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2023-08-30 23:20:42,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:20:42,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2023-08-30 23:20:42,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,623 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 226 flow. Second operand 5 states and 434 transitions. [2023-08-30 23:20:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 389 flow [2023-08-30 23:20:42,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 310 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-30 23:20:42,625 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-30 23:20:42,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-30 23:20:42,626 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-30 23:20:42,626 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-30 23:20:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:20:42,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 23:20:42,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-30 23:20:42,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 23:20:42,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 23:20:42,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-30 23:20:42,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:20:42,630 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:20:42,633 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:20:42,633 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:20:42,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:20:42 BasicIcfg [2023-08-30 23:20:42,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:20:42,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:20:42,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:20:42,636 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:20:42,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:20:34" (3/4) ... [2023-08-30 23:20:42,639 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:20:42,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:20:42,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:20:42,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:20:42,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-30 23:20:42,648 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 23:20:42,648 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:20:42,648 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:20:42,648 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:20:42,673 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:20:42,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:20:42,673 INFO L158 Benchmark]: Toolchain (without parser) took 8928.24ms. Allocated memory was 86.0MB in the beginning and 234.9MB in the end (delta: 148.9MB). Free memory was 62.1MB in the beginning and 82.5MB in the end (delta: -20.4MB). Peak memory consumption was 130.1MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,674 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:20:42,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.30ms. Allocated memory is still 86.0MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 37.5kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.63ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 59.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,674 INFO L158 Benchmark]: Boogie Preprocessor took 23.23ms. Allocated memory is still 86.0MB. Free memory was 59.6MB in the beginning and 58.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,675 INFO L158 Benchmark]: RCFGBuilder took 505.76ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 43.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,675 INFO L158 Benchmark]: TraceAbstraction took 7816.47ms. Allocated memory was 86.0MB in the beginning and 234.9MB in the end (delta: 148.9MB). Free memory was 43.0MB in the beginning and 84.6MB in the end (delta: -41.7MB). Peak memory consumption was 108.5MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,675 INFO L158 Benchmark]: Witness Printer took 37.03ms. Allocated memory is still 234.9MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:20:42,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.30ms. Allocated memory is still 86.0MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 37.5kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.63ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 59.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.23ms. Allocated memory is still 86.0MB. Free memory was 59.6MB in the beginning and 58.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.76ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 43.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7816.47ms. Allocated memory was 86.0MB in the beginning and 234.9MB in the end (delta: 148.9MB). Free memory was 43.0MB in the beginning and 84.6MB in the end (delta: -41.7MB). Peak memory consumption was 108.5MB. Max. memory is 16.1GB. * Witness Printer took 37.03ms. Allocated memory is still 234.9MB. Free memory was 84.6MB in the beginning and 82.5MB 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: 2.1s, 93 PlacesBefore, 33 PlacesAfterwards, 81 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 2668 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1418, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 785, independent conditional: 0, independent unconditional: 785, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1418, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 498 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 358 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1008 IncrementalHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 72 mSDtfsCounter, 1008 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=314occurred in iteration=10, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:20:42,695 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