./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c --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/weaver/popl20-bad-ring-nondet.wvr.c -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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --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 [2023-08-31 02:16:32,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:16:32,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:16:32,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:16:32,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:16:32,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:16:32,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:16:32,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:16:32,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:16:32,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:16:32,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:16:32,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:16:32,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:16:32,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:16:32,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:16:32,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:16:32,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:16:32,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:16:32,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:16:32,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:16:32,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:16:32,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:16:32,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:16:32,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:16:32,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:16:32,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:16:32,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:16:32,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:16:32,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:16:32,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:16:32,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:16:32,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:16:32,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:16:32,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:16:32,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:16:32,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:16:32,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:16:32,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:16:32,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:16:32,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:16:32,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:16:32,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:16:32,437 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:16:32,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:16:32,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:16:32,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:16:32,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:16:32,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:16:32,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:16:32,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:16:32,441 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:16:32,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:16:32,443 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:16:32,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:16:32,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:16:32,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:16:32,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:16:32,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:16:32,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:16:32,444 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:16:32,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:16:32,446 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:16:32,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:16:32,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:16:32,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:16:32,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:16:32,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:16:32,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:16:32,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:16:32,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:16:32,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:16:32,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:16:32,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:16:32,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:16:32,453 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:16:32,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:16:32,453 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:16:32,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:16:32,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:16:32,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:16:32,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:16:32,801 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:16:32,802 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:16:32,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-31 02:16:33,977 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:16:34,176 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:16:34,177 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-31 02:16:34,186 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5287a9489/99d93d47b88148efa7b02419abe26aba/FLAGd01f4de26 [2023-08-31 02:16:34,201 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5287a9489/99d93d47b88148efa7b02419abe26aba [2023-08-31 02:16:34,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:16:34,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:16:34,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:16:34,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:16:34,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:16:34,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e101061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34, skipping insertion in model container [2023-08-31 02:16:34,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:16:34,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:16:34,456 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-08-31 02:16:34,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:16:34,484 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:16:34,523 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-08-31 02:16:34,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:16:34,547 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:16:34,547 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:16:34,553 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:16:34,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34 WrapperNode [2023-08-31 02:16:34,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:16:34,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:16:34,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:16:34,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:16:34,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,626 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 327 [2023-08-31 02:16:34,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:16:34,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:16:34,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:16:34,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:16:34,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:16:34,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:16:34,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:16:34,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:16:34,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (1/1) ... [2023-08-31 02:16:34,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:16:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:34,747 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) [2023-08-31 02:16:34,773 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 [2023-08-31 02:16:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:16:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:16:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:16:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:16:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:16:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:16:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:16:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:16:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:16:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:16:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:16:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:16:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:16:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 02:16:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:16:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:16:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:16:34,797 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 02:16:34,965 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:16:34,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:16:35,358 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:16:35,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:16:35,646 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 02:16:35,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:16:35 BoogieIcfgContainer [2023-08-31 02:16:35,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:16:35,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:16:35,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:16:35,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:16:35,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:16:34" (1/3) ... [2023-08-31 02:16:35,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db9c4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:16:35, skipping insertion in model container [2023-08-31 02:16:35,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:16:34" (2/3) ... [2023-08-31 02:16:35,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db9c4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:16:35, skipping insertion in model container [2023-08-31 02:16:35,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:16:35" (3/3) ... [2023-08-31 02:16:35,656 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-08-31 02:16:35,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:16:35,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:16:35,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:16:35,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:16:35,777 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 02:16:35,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 266 transitions, 556 flow [2023-08-31 02:16:35,974 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-31 02:16:35,974 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:16:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 263 events. 25/263 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 225. Up to 4 conditions per place. [2023-08-31 02:16:35,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 266 transitions, 556 flow [2023-08-31 02:16:35,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 253 transitions, 524 flow [2023-08-31 02:16:35,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:16:36,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 253 transitions, 524 flow [2023-08-31 02:16:36,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 253 transitions, 524 flow [2023-08-31 02:16:36,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 253 transitions, 524 flow [2023-08-31 02:16:36,064 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2023-08-31 02:16:36,065 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:16:36,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 225. Up to 4 conditions per place. [2023-08-31 02:16:36,072 INFO L119 LiptonReduction]: Number of co-enabled transitions 2820 [2023-08-31 02:16:44,122 INFO L134 LiptonReduction]: Checked pairs total: 5537 [2023-08-31 02:16:44,122 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-31 02:16:44,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:16:44,141 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;@45037576, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:16:44,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 02:16:44,155 INFO L130 PetriNetUnfolder]: 10/36 cut-off events. [2023-08-31 02:16:44,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:16:44,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:44,156 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, 1, 1] [2023-08-31 02:16:44,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:44,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 203710906, now seen corresponding path program 1 times [2023-08-31 02:16:44,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:44,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674963972] [2023-08-31 02:16:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:16:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674963972] [2023-08-31 02:16:44,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674963972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:44,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:44,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:16:44,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603976431] [2023-08-31 02:16:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:44,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 02:16:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 02:16:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 02:16:44,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 533 [2023-08-31 02:16:44,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:44,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:44,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 533 [2023-08-31 02:16:44,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:44,767 INFO L130 PetriNetUnfolder]: 748/1046 cut-off events. [2023-08-31 02:16:44,767 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-31 02:16:44,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 1046 events. 748/1046 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3214 event pairs, 493 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 1908. Up to 1047 conditions per place. [2023-08-31 02:16:44,777 INFO L137 encePairwiseOnDemand]: 531/533 looper letters, 35 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-31 02:16:44,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2023-08-31 02:16:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 02:16:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 02:16:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 507 transitions. [2023-08-31 02:16:44,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-08-31 02:16:44,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 507 transitions. [2023-08-31 02:16:44,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 507 transitions. [2023-08-31 02:16:44,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:44,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 507 transitions. [2023-08-31 02:16:44,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:44,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:44,817 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:44,819 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 2 states and 507 transitions. [2023-08-31 02:16:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2023-08-31 02:16:44,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 02:16:44,826 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 76 flow [2023-08-31 02:16:44,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-08-31 02:16:44,834 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2023-08-31 02:16:44,835 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 76 flow [2023-08-31 02:16:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:44,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:44,838 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, 1, 1, 1, 1] [2023-08-31 02:16:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 02:16:44,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:44,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -875827311, now seen corresponding path program 1 times [2023-08-31 02:16:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:44,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484767387] [2023-08-31 02:16:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:16:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484767387] [2023-08-31 02:16:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484767387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:45,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:16:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542697747] [2023-08-31 02:16:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:16:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:16:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:16:45,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-31 02:16:45,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:45,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-31 02:16:45,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:45,484 INFO L130 PetriNetUnfolder]: 869/1262 cut-off events. [2023-08-31 02:16:45,484 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-31 02:16:45,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 1262 events. 869/1262 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4221 event pairs, 595 based on Foata normal form. 84/1070 useless extension candidates. Maximal degree in co-relation 2569. Up to 1047 conditions per place. [2023-08-31 02:16:45,490 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 34 selfloop transitions, 2 changer transitions 33/69 dead transitions. [2023-08-31 02:16:45,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 69 transitions, 288 flow [2023-08-31 02:16:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:16:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:16:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1180 transitions. [2023-08-31 02:16:45,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427767354596623 [2023-08-31 02:16:45,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1180 transitions. [2023-08-31 02:16:45,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1180 transitions. [2023-08-31 02:16:45,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:45,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1180 transitions. [2023-08-31 02:16:45,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,505 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 76 flow. Second operand 5 states and 1180 transitions. [2023-08-31 02:16:45,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 69 transitions, 288 flow [2023-08-31 02:16:45,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 02:16:45,508 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 106 flow [2023-08-31 02:16:45,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-31 02:16:45,509 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-31 02:16:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 106 flow [2023-08-31 02:16:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:45,511 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, 1, 1, 1, 1, 1] [2023-08-31 02:16:45,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 02:16:45,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:45,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1983495064, now seen corresponding path program 1 times [2023-08-31 02:16:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170021197] [2023-08-31 02:16:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:16:45,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:45,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170021197] [2023-08-31 02:16:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170021197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:45,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:16:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172381038] [2023-08-31 02:16:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:16:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:16:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:16:45,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-31 02:16:45,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:45,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:45,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-31 02:16:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:46,020 INFO L130 PetriNetUnfolder]: 996/1430 cut-off events. [2023-08-31 02:16:46,021 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-31 02:16:46,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 1430 events. 996/1430 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4889 event pairs, 680 based on Foata normal form. 82/1199 useless extension candidates. Maximal degree in co-relation 3391. Up to 1048 conditions per place. [2023-08-31 02:16:46,028 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 35 selfloop transitions, 2 changer transitions 22/59 dead transitions. [2023-08-31 02:16:46,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 292 flow [2023-08-31 02:16:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:16:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:16:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2023-08-31 02:16:46,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432457786116323 [2023-08-31 02:16:46,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2023-08-31 02:16:46,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2023-08-31 02:16:46,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:46,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2023-08-31 02:16:46,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,041 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 106 flow. Second operand 4 states and 945 transitions. [2023-08-31 02:16:46,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 292 flow [2023-08-31 02:16:46,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 276 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-31 02:16:46,044 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 114 flow [2023-08-31 02:16:46,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-31 02:16:46,045 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-31 02:16:46,045 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 114 flow [2023-08-31 02:16:46,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:46,046 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, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 02:16:46,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:46,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -11726098, now seen corresponding path program 1 times [2023-08-31 02:16:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:46,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433255174] [2023-08-31 02:16:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:16:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433255174] [2023-08-31 02:16:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433255174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:46,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:46,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:16:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489424573] [2023-08-31 02:16:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:46,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:16:46,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:16:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:16:46,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-31 02:16:46,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:46,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-31 02:16:46,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:46,496 INFO L130 PetriNetUnfolder]: 1247/1783 cut-off events. [2023-08-31 02:16:46,496 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2023-08-31 02:16:46,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 1783 events. 1247/1783 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6452 event pairs, 870 based on Foata normal form. 92/1464 useless extension candidates. Maximal degree in co-relation 4544. Up to 1049 conditions per place. [2023-08-31 02:16:46,506 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 36 selfloop transitions, 2 changer transitions 24/62 dead transitions. [2023-08-31 02:16:46,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 311 flow [2023-08-31 02:16:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:16:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:16:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2023-08-31 02:16:46,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441838649155722 [2023-08-31 02:16:46,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2023-08-31 02:16:46,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2023-08-31 02:16:46,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:46,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2023-08-31 02:16:46,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,528 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,528 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 114 flow. Second operand 4 states and 947 transitions. [2023-08-31 02:16:46,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 311 flow [2023-08-31 02:16:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 295 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-31 02:16:46,531 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2023-08-31 02:16:46,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-31 02:16:46,532 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-31 02:16:46,532 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2023-08-31 02:16:46,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:46,533 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:46,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 02:16:46,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:46,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash -451165947, now seen corresponding path program 1 times [2023-08-31 02:16:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147363747] [2023-08-31 02:16:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147363747] [2023-08-31 02:16:46,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147363747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:46,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:46,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:16:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849357189] [2023-08-31 02:16:46,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:46,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:16:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:16:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:16:46,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 533 [2023-08-31 02:16:46,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:46,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 533 [2023-08-31 02:16:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:46,938 INFO L130 PetriNetUnfolder]: 1394/1946 cut-off events. [2023-08-31 02:16:46,939 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2023-08-31 02:16:46,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 1946 events. 1394/1946 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6914 event pairs, 493 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 4913. Up to 1006 conditions per place. [2023-08-31 02:16:46,950 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 55 selfloop transitions, 2 changer transitions 6/63 dead transitions. [2023-08-31 02:16:46,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 321 flow [2023-08-31 02:16:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:16:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:16:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-08-31 02:16:46,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47529706066291433 [2023-08-31 02:16:46,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-08-31 02:16:46,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-08-31 02:16:46,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:46,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-08-31 02:16:46,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,960 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 3 states and 760 transitions. [2023-08-31 02:16:46,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 321 flow [2023-08-31 02:16:46,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 02:16:46,963 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2023-08-31 02:16:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-31 02:16:46,964 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-31 02:16:46,964 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2023-08-31 02:16:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:46,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:46,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:46,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 02:16:46,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:46,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:46,966 INFO L85 PathProgramCache]: Analyzing trace with hash -4226639, now seen corresponding path program 1 times [2023-08-31 02:16:46,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:46,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093983497] [2023-08-31 02:16:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093983497] [2023-08-31 02:16:47,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093983497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:47,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:47,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:16:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051154534] [2023-08-31 02:16:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:16:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:16:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:16:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 533 [2023-08-31 02:16:47,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:47,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 533 [2023-08-31 02:16:47,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:47,317 INFO L130 PetriNetUnfolder]: 1590/2226 cut-off events. [2023-08-31 02:16:47,317 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2023-08-31 02:16:47,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2226 events. 1590/2226 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8480 event pairs, 467 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 5801. Up to 1288 conditions per place. [2023-08-31 02:16:47,329 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-31 02:16:47,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 282 flow [2023-08-31 02:16:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:16:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:16:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-31 02:16:47,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627892432770482 [2023-08-31 02:16:47,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-31 02:16:47,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-31 02:16:47,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:47,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-31 02:16:47,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,338 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 3 states and 740 transitions. [2023-08-31 02:16:47,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 282 flow [2023-08-31 02:16:47,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 02:16:47,341 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 146 flow [2023-08-31 02:16:47,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-31 02:16:47,342 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-08-31 02:16:47,342 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 146 flow [2023-08-31 02:16:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:47,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:47,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 02:16:47,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:47,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash 950240521, now seen corresponding path program 1 times [2023-08-31 02:16:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759556746] [2023-08-31 02:16:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759556746] [2023-08-31 02:16:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759556746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:47,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:16:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031147731] [2023-08-31 02:16:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:16:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:16:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:16:47,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 533 [2023-08-31 02:16:47,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:47,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 533 [2023-08-31 02:16:47,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:47,806 INFO L130 PetriNetUnfolder]: 2252/3132 cut-off events. [2023-08-31 02:16:47,807 INFO L131 PetriNetUnfolder]: For 1970/1970 co-relation queries the response was YES. [2023-08-31 02:16:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 3132 events. 2252/3132 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12337 event pairs, 887 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 8750. Up to 2073 conditions per place. [2023-08-31 02:16:47,820 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 48 selfloop transitions, 4 changer transitions 6/58 dead transitions. [2023-08-31 02:16:47,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 324 flow [2023-08-31 02:16:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:16:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:16:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-31 02:16:47,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-08-31 02:16:47,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-31 02:16:47,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-31 02:16:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:47,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-31 02:16:47,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,828 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 146 flow. Second operand 3 states and 728 transitions. [2023-08-31 02:16:47,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 324 flow [2023-08-31 02:16:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 02:16:47,834 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 176 flow [2023-08-31 02:16:47,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-31 02:16:47,835 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-31 02:16:47,838 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 176 flow [2023-08-31 02:16:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:47,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:47,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 02:16:47,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:47,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 898013115, now seen corresponding path program 2 times [2023-08-31 02:16:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485778957] [2023-08-31 02:16:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:48,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485778957] [2023-08-31 02:16:48,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485778957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:48,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:16:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390124351] [2023-08-31 02:16:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:48,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 02:16:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 02:16:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 02:16:48,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 533 [2023-08-31 02:16:48,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:48,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:48,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 533 [2023-08-31 02:16:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:48,635 INFO L130 PetriNetUnfolder]: 2852/3948 cut-off events. [2023-08-31 02:16:48,635 INFO L131 PetriNetUnfolder]: For 2542/2542 co-relation queries the response was YES. [2023-08-31 02:16:48,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11835 conditions, 3948 events. 2852/3948 cut-off events. For 2542/2542 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16060 event pairs, 1079 based on Foata normal form. 72/3217 useless extension candidates. Maximal degree in co-relation 11822. Up to 2045 conditions per place. [2023-08-31 02:16:48,649 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 40 selfloop transitions, 5 changer transitions 15/60 dead transitions. [2023-08-31 02:16:48,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 362 flow [2023-08-31 02:16:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:16:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:16:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1138 transitions. [2023-08-31 02:16:48,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270168855534709 [2023-08-31 02:16:48,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1138 transitions. [2023-08-31 02:16:48,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1138 transitions. [2023-08-31 02:16:48,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:48,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1138 transitions. [2023-08-31 02:16:48,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.6) internal successors, (1138), 5 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:48,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:48,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:48,661 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 176 flow. Second operand 5 states and 1138 transitions. [2023-08-31 02:16:48,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 362 flow [2023-08-31 02:16:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 02:16:48,666 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 175 flow [2023-08-31 02:16:48,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-31 02:16:48,667 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-31 02:16:48,667 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 175 flow [2023-08-31 02:16:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:48,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:48,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:48,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 02:16:48,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:48,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1169813069, now seen corresponding path program 3 times [2023-08-31 02:16:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291143537] [2023-08-31 02:16:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:48,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291143537] [2023-08-31 02:16:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291143537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:48,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754182211] [2023-08-31 02:16:48,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:16:48,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:48,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:48,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:16:49,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 02:16:49,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 02:16:49,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:49,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 02:16:49,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:49,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 02:16:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754182211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 02:16:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-31 02:16:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677935587] [2023-08-31 02:16:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:16:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:16:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:16:49,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 533 [2023-08-31 02:16:49,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:49,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:49,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 533 [2023-08-31 02:16:49,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:49,750 INFO L130 PetriNetUnfolder]: 2797/3939 cut-off events. [2023-08-31 02:16:49,750 INFO L131 PetriNetUnfolder]: For 2929/2929 co-relation queries the response was YES. [2023-08-31 02:16:49,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11868 conditions, 3939 events. 2797/3939 cut-off events. For 2929/2929 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 16608 event pairs, 911 based on Foata normal form. 140/3324 useless extension candidates. Maximal degree in co-relation 11854. Up to 2998 conditions per place. [2023-08-31 02:16:49,765 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 60 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2023-08-31 02:16:49,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 398 flow [2023-08-31 02:16:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:16:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:16:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-31 02:16:49,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466541588492808 [2023-08-31 02:16:49,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-31 02:16:49,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-31 02:16:49,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:49,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-31 02:16:49,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:49,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:49,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:49,774 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 175 flow. Second operand 3 states and 746 transitions. [2023-08-31 02:16:49,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 398 flow [2023-08-31 02:16:49,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 379 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-31 02:16:49,779 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 180 flow [2023-08-31 02:16:49,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-31 02:16:49,780 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-08-31 02:16:49,780 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 180 flow [2023-08-31 02:16:49,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:49,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:49,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:49,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:49,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:49,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 279207723, now seen corresponding path program 4 times [2023-08-31 02:16:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185993109] [2023-08-31 02:16:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185993109] [2023-08-31 02:16:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185993109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182055327] [2023-08-31 02:16:50,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 02:16:50,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:50,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:50,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:16:50,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 02:16:50,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 02:16:50,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:50,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 02:16:50,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:50,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 02:16:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182055327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:50,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 02:16:50,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-31 02:16:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981133539] [2023-08-31 02:16:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:16:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:16:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:16:50,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 533 [2023-08-31 02:16:50,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:50,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:50,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 533 [2023-08-31 02:16:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:50,844 INFO L130 PetriNetUnfolder]: 2840/4022 cut-off events. [2023-08-31 02:16:50,844 INFO L131 PetriNetUnfolder]: For 3815/3815 co-relation queries the response was YES. [2023-08-31 02:16:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12390 conditions, 4022 events. 2840/4022 cut-off events. For 3815/3815 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16641 event pairs, 884 based on Foata normal form. 176/3507 useless extension candidates. Maximal degree in co-relation 12376. Up to 2410 conditions per place. [2023-08-31 02:16:50,860 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 56 selfloop transitions, 3 changer transitions 4/63 dead transitions. [2023-08-31 02:16:50,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 396 flow [2023-08-31 02:16:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:16:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:16:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-08-31 02:16:50,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659161976235147 [2023-08-31 02:16:50,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-08-31 02:16:50,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-08-31 02:16:50,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:50,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-08-31 02:16:50,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:50,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:50,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:50,869 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 180 flow. Second operand 3 states and 745 transitions. [2023-08-31 02:16:50,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 396 flow [2023-08-31 02:16:50,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 02:16:50,873 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 201 flow [2023-08-31 02:16:50,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-31 02:16:50,875 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-08-31 02:16:50,875 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 201 flow [2023-08-31 02:16:50,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:50,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:50,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:50,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:51,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-31 02:16:51,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 02:16:51,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:51,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1250184703, now seen corresponding path program 5 times [2023-08-31 02:16:51,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:51,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798584484] [2023-08-31 02:16:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:51,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798584484] [2023-08-31 02:16:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798584484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:16:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:16:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:16:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340538840] [2023-08-31 02:16:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:16:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 02:16:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 02:16:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 02:16:51,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 533 [2023-08-31 02:16:51,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:51,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:51,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 533 [2023-08-31 02:16:51,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:51,762 INFO L130 PetriNetUnfolder]: 2728/3862 cut-off events. [2023-08-31 02:16:51,763 INFO L131 PetriNetUnfolder]: For 3991/3991 co-relation queries the response was YES. [2023-08-31 02:16:51,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 3862 events. 2728/3862 cut-off events. For 3991/3991 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16677 event pairs, 878 based on Foata normal form. 20/3203 useless extension candidates. Maximal degree in co-relation 12748. Up to 2227 conditions per place. [2023-08-31 02:16:51,781 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-08-31 02:16:51,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 408 flow [2023-08-31 02:16:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:16:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:16:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1135 transitions. [2023-08-31 02:16:51,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425891181988743 [2023-08-31 02:16:51,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1135 transitions. [2023-08-31 02:16:51,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1135 transitions. [2023-08-31 02:16:51,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:51,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1135 transitions. [2023-08-31 02:16:51,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:51,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:51,792 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:51,792 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 201 flow. Second operand 5 states and 1135 transitions. [2023-08-31 02:16:51,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 408 flow [2023-08-31 02:16:51,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 383 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 02:16:51,799 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 203 flow [2023-08-31 02:16:51,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-31 02:16:51,799 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-08-31 02:16:51,800 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 203 flow [2023-08-31 02:16:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:51,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:51,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:51,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 02:16:51,801 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 1 more)] === [2023-08-31 02:16:51,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash 928404999, now seen corresponding path program 6 times [2023-08-31 02:16:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675148756] [2023-08-31 02:16:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675148756] [2023-08-31 02:16:52,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675148756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883591593] [2023-08-31 02:16:52,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 02:16:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:52,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:16:52,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 02:16:52,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 02:16:52,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:52,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 02:16:52,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:52,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-31 02:16:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:52,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:16:52,537 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-31 02:16:52,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-31 02:16:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883591593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:16:52,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:16:52,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-31 02:16:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255008163] [2023-08-31 02:16:52,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:16:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 02:16:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:52,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 02:16:52,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-31 02:16:52,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-31 02:16:52,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 214.9090909090909) internal successors, (2364), 11 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:52,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:52,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-31 02:16:52,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:53,346 INFO L130 PetriNetUnfolder]: 1956/2781 cut-off events. [2023-08-31 02:16:53,346 INFO L131 PetriNetUnfolder]: For 3631/3631 co-relation queries the response was YES. [2023-08-31 02:16:53,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 2781 events. 1956/2781 cut-off events. For 3631/3631 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11034 event pairs, 342 based on Foata normal form. 122/2442 useless extension candidates. Maximal degree in co-relation 8897. Up to 962 conditions per place. [2023-08-31 02:16:53,356 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2023-08-31 02:16:53,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 694 flow [2023-08-31 02:16:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:16:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:16:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2386 transitions. [2023-08-31 02:16:53,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40695889476377284 [2023-08-31 02:16:53,363 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2386 transitions. [2023-08-31 02:16:53,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2386 transitions. [2023-08-31 02:16:53,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:53,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2386 transitions. [2023-08-31 02:16:53,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 216.9090909090909) internal successors, (2386), 11 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:53,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:53,388 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:53,389 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 203 flow. Second operand 11 states and 2386 transitions. [2023-08-31 02:16:53,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 694 flow [2023-08-31 02:16:53,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 619 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-31 02:16:53,393 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-31 02:16:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-31 02:16:53,395 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-31 02:16:53,396 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-31 02:16:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 214.9090909090909) internal successors, (2364), 11 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:16:53,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-31 02:16:53,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 02:16:53,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-31 02:16:53,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-31 02:16:53,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:53,607 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:53,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 02:16:53,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 02:16:53,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 02:16:53 BasicIcfg [2023-08-31 02:16:53,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 02:16:53,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 02:16:53,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 02:16:53,619 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 02:16:53,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:16:35" (3/4) ... [2023-08-31 02:16:53,622 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 02:16:53,628 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 02:16:53,628 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 02:16:53,628 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-31 02:16:53,636 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-08-31 02:16:53,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 02:16:53,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 02:16:53,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 02:16:53,690 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 02:16:53,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 02:16:53,692 INFO L158 Benchmark]: Toolchain (without parser) took 19486.54ms. Allocated memory was 67.1MB in the beginning and 570.4MB in the end (delta: 503.3MB). Free memory was 40.9MB in the beginning and 441.0MB in the end (delta: -400.0MB). Peak memory consumption was 102.0MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,692 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 02:16:53,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.28ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 28.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.85ms. Allocated memory is still 67.1MB. Free memory was 28.3MB in the beginning and 25.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,694 INFO L158 Benchmark]: Boogie Preprocessor took 74.30ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 25.6MB in the beginning and 73.9MB in the end (delta: -48.3MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,694 INFO L158 Benchmark]: RCFGBuilder took 942.58ms. Allocated memory is still 94.4MB. Free memory was 73.4MB in the beginning and 64.6MB in the end (delta: 8.8MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,694 INFO L158 Benchmark]: TraceAbstraction took 17967.53ms. Allocated memory was 94.4MB in the beginning and 570.4MB in the end (delta: 476.1MB). Free memory was 64.2MB in the beginning and 445.1MB in the end (delta: -380.9MB). Peak memory consumption was 238.4MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,695 INFO L158 Benchmark]: Witness Printer took 71.61ms. Allocated memory is still 570.4MB. Free memory was 445.1MB in the beginning and 441.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 02:16:53,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.28ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 28.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.85ms. Allocated memory is still 67.1MB. Free memory was 28.3MB in the beginning and 25.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.30ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 25.6MB in the beginning and 73.9MB in the end (delta: -48.3MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * RCFGBuilder took 942.58ms. Allocated memory is still 94.4MB. Free memory was 73.4MB in the beginning and 64.6MB in the end (delta: 8.8MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17967.53ms. Allocated memory was 94.4MB in the beginning and 570.4MB in the end (delta: 476.1MB). Free memory was 64.2MB in the beginning and 445.1MB in the end (delta: -380.9MB). Peak memory consumption was 238.4MB. Max. memory is 16.1GB. * Witness Printer took 71.61ms. Allocated memory is still 570.4MB. Free memory was 445.1MB in the beginning and 441.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 238 PlacesBefore, 37 PlacesAfterwards, 253 TransitionsBefore, 37 TransitionsAfterwards, 2820 CoEnabledTransitionPairs, 8 FixpointIterations, 159 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 14 ConcurrentYvCompositions, 15 ChoiceCompositions, 267 TotalNumberOfCompositions, 5537 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4134, independent: 3984, independent conditional: 0, independent unconditional: 3984, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1717, independent: 1685, independent conditional: 0, independent unconditional: 1685, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4134, independent: 2299, independent conditional: 0, independent unconditional: 2299, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 1717, unknown conditional: 0, unknown unconditional: 1717] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 146, Positive conditional cache size: 0, Positive unconditional cache size: 146, 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: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 287 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1090 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 591 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 519 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2161 IncrementalHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 72 mSDtfsCounter, 2161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=11, InterpolantAutomatonStates: 51, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 451 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 1566 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 72/80 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! [2023-08-31 02:16:53,717 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