./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:48:47,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:48:47,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:48:47,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:48:47,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:48:47,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:48:47,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:48:47,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:48:47,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:48:47,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:48:47,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:48:47,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:48:47,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:48:47,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:48:47,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:48:47,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:48:47,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:48:47,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:48:47,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:48:47,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:48:47,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:48:47,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:48:47,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:48:47,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:48:47,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:48:47,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:48:47,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:48:47,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:48:47,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:48:47,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:48:47,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:48:47,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:48:47,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:48:47,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:48:47,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:48:47,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:48:47,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:48:47,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:48:47,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:48:47,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:48:47,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:48:47,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:48:47,457 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:48:47,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:48:47,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:48:47,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:48:47,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:48:47,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:48:47,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:48:47,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:48:47,461 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:48:47,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:48:47,462 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:48:47,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:48:47,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:48:47,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:48:47,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:48:47,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:48:47,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:48:47,463 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:48:47,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:48:47,463 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:48:47,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:48:47,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:48:47,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:48:47,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:48:47,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:48:47,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:48:47,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:48:47,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:48:47,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:48:47,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:48:47,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:48:47,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:48:47,466 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:48:47,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:48:47,466 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:48:47,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:48:47,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:48:47,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:48:47,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:48:47,793 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:48:47,793 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:48:47,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-09-01 14:48:49,008 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:48:49,227 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:48:49,227 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-09-01 14:48:49,232 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30d9bc3f/3b5ce0415eab48629e65fcfceb4624b0/FLAG15a0d5f54 [2023-09-01 14:48:49,243 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30d9bc3f/3b5ce0415eab48629e65fcfceb4624b0 [2023-09-01 14:48:49,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:48:49,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:48:49,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:48:49,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:48:49,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:48:49,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc91973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49, skipping insertion in model container [2023-09-01 14:48:49,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:48:49,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:48:49,427 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/test-easy10.wvr.c[3907,3920] [2023-09-01 14:48:49,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:48:49,443 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:48:49,466 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/test-easy10.wvr.c[3907,3920] [2023-09-01 14:48:49,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:48:49,473 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:48:49,473 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:48:49,479 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:48:49,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49 WrapperNode [2023-09-01 14:48:49,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:48:49,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:48:49,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:48:49,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:48:49,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,543 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-09-01 14:48:49,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:48:49,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:48:49,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:48:49,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:48:49,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:48:49,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:48:49,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:48:49,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:48:49,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (1/1) ... [2023-09-01 14:48:49,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:48:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:49,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:48:49,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:48:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:48:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:48:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:48:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:48:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:48:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:48:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:48:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 14:48:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 14:48:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:48:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:48:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:48:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:48:49,667 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:48:49,829 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:48:49,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:48:50,097 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:48:50,148 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:48:50,148 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 14:48:50,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:48:50 BoogieIcfgContainer [2023-09-01 14:48:50,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:48:50,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:48:50,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:48:50,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:48:50,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:48:49" (1/3) ... [2023-09-01 14:48:50,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66721d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:48:50, skipping insertion in model container [2023-09-01 14:48:50,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:49" (2/3) ... [2023-09-01 14:48:50,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66721d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:48:50, skipping insertion in model container [2023-09-01 14:48:50,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:48:50" (3/3) ... [2023-09-01 14:48:50,160 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-09-01 14:48:50,167 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:48:50,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:48:50,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:48:50,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:48:50,242 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 14:48:50,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-09-01 14:48:50,386 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-09-01 14:48:50,386 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:48:50,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-09-01 14:48:50,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-09-01 14:48:50,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-09-01 14:48:50,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:48:50,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-09-01 14:48:50,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-09-01 14:48:50,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-09-01 14:48:50,470 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-09-01 14:48:50,471 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:48:50,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-09-01 14:48:50,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-09-01 14:48:54,443 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-09-01 14:48:54,444 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-09-01 14:48:54,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:48:54,461 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;@21831466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:48:54,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 14:48:54,477 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-09-01 14:48:54,481 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:48:54,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:54,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:54,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:48:54,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:54,489 INFO L85 PathProgramCache]: Analyzing trace with hash 152339249, now seen corresponding path program 1 times [2023-09-01 14:48:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265479960] [2023-09-01 14:48:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265479960] [2023-09-01 14:48:55,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265479960] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:55,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:48:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:48:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058305697] [2023-09-01 14:48:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:48:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:48:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:48:55,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-09-01 14:48:55,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:55,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:55,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-09-01 14:48:55,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:55,508 INFO L130 PetriNetUnfolder]: 665/1141 cut-off events. [2023-09-01 14:48:55,508 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-09-01 14:48:55,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1141 events. 665/1141 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6324 event pairs, 336 based on Foata normal form. 25/1139 useless extension candidates. Maximal degree in co-relation 2140. Up to 960 conditions per place. [2023-09-01 14:48:55,523 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-09-01 14:48:55,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-09-01 14:48:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:48:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:48:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-09-01 14:48:55,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-09-01 14:48:55,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-09-01 14:48:55,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-09-01 14:48:55,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:55,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-09-01 14:48:55,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:55,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:55,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:55,570 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-09-01 14:48:55,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-09-01 14:48:55,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 14:48:55,579 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-09-01 14:48:55,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-09-01 14:48:55,584 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-09-01 14:48:55,585 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-09-01 14:48:55,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:55,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:55,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:55,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:48:55,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:48:55,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -877069175, now seen corresponding path program 2 times [2023-09-01 14:48:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335383385] [2023-09-01 14:48:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:58,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335383385] [2023-09-01 14:48:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335383385] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:48:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:48:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601689774] [2023-09-01 14:48:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:48:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:48:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:48:58,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:48:58,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:58,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:58,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:48:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:01,728 INFO L130 PetriNetUnfolder]: 15827/23375 cut-off events. [2023-09-01 14:49:01,728 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-09-01 14:49:01,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47247 conditions, 23375 events. 15827/23375 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 150387 event pairs, 2555 based on Foata normal form. 1/23352 useless extension candidates. Maximal degree in co-relation 16328. Up to 7098 conditions per place. [2023-09-01 14:49:01,876 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 207 selfloop transitions, 15 changer transitions 16/242 dead transitions. [2023-09-01 14:49:01,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 1028 flow [2023-09-01 14:49:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:49:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:49:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1527 transitions. [2023-09-01 14:49:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935358758888171 [2023-09-01 14:49:01,882 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1527 transitions. [2023-09-01 14:49:01,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1527 transitions. [2023-09-01 14:49:01,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:01,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1527 transitions. [2023-09-01 14:49:01,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.07142857142857) internal successors, (1527), 14 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:01,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:01,894 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:01,895 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 14 states and 1527 transitions. [2023-09-01 14:49:01,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 242 transitions, 1028 flow [2023-09-01 14:49:01,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:49:01,902 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 220 flow [2023-09-01 14:49:01,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-09-01 14:49:01,903 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-09-01 14:49:01,903 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 220 flow [2023-09-01 14:49:01,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:01,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:01,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:01,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 14:49:01,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:01,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1023457985, now seen corresponding path program 3 times [2023-09-01 14:49:01,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:01,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280610408] [2023-09-01 14:49:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280610408] [2023-09-01 14:49:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280610408] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:49:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964139034] [2023-09-01 14:49:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:49:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:49:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:49:02,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-09-01 14:49:02,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:02,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-09-01 14:49:02,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:02,645 INFO L130 PetriNetUnfolder]: 3016/5386 cut-off events. [2023-09-01 14:49:02,646 INFO L131 PetriNetUnfolder]: For 5571/5649 co-relation queries the response was YES. [2023-09-01 14:49:02,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14798 conditions, 5386 events. 3016/5386 cut-off events. For 5571/5649 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40027 event pairs, 713 based on Foata normal form. 74/5111 useless extension candidates. Maximal degree in co-relation 14761. Up to 4110 conditions per place. [2023-09-01 14:49:02,687 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-09-01 14:49:02,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 347 flow [2023-09-01 14:49:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:49:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:49:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-09-01 14:49:02,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-09-01 14:49:02,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-09-01 14:49:02,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-09-01 14:49:02,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:02,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-09-01 14:49:02,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,693 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 220 flow. Second operand 3 states and 392 transitions. [2023-09-01 14:49:02,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 347 flow [2023-09-01 14:49:02,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 339 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 14:49:02,743 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 210 flow [2023-09-01 14:49:02,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-09-01 14:49:02,745 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-09-01 14:49:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 210 flow [2023-09-01 14:49:02,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:02,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 14:49:02,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:02,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1483561397, now seen corresponding path program 4 times [2023-09-01 14:49:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204336254] [2023-09-01 14:49:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:02,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:02,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:02,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204336254] [2023-09-01 14:49:02,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204336254] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:02,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:02,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:49:02,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310277930] [2023-09-01 14:49:02,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:49:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:49:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:49:02,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-09-01 14:49:02,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:02,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:02,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-09-01 14:49:02,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:03,433 INFO L130 PetriNetUnfolder]: 2894/4963 cut-off events. [2023-09-01 14:49:03,433 INFO L131 PetriNetUnfolder]: For 4304/4457 co-relation queries the response was YES. [2023-09-01 14:49:03,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 4963 events. 2894/4963 cut-off events. For 4304/4457 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35623 event pairs, 767 based on Foata normal form. 137/4716 useless extension candidates. Maximal degree in co-relation 10411. Up to 4202 conditions per place. [2023-09-01 14:49:03,476 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-09-01 14:49:03,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 343 flow [2023-09-01 14:49:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:49:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:49:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-09-01 14:49:03,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-09-01 14:49:03,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-09-01 14:49:03,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-09-01 14:49:03,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:03,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-09-01 14:49:03,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:03,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:03,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:03,481 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 210 flow. Second operand 3 states and 392 transitions. [2023-09-01 14:49:03,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 343 flow [2023-09-01 14:49:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:49:03,533 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 214 flow [2023-09-01 14:49:03,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-09-01 14:49:03,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-09-01 14:49:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 214 flow [2023-09-01 14:49:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:03,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:03,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 14:49:03,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:03,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -284950999, now seen corresponding path program 5 times [2023-09-01 14:49:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557204352] [2023-09-01 14:49:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:03,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557204352] [2023-09-01 14:49:03,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557204352] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:03,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:49:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521266683] [2023-09-01 14:49:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:03,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:49:03,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:03,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:49:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:49:03,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-09-01 14:49:03,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:03,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:03,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-09-01 14:49:03,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:04,082 INFO L130 PetriNetUnfolder]: 2297/4053 cut-off events. [2023-09-01 14:49:04,082 INFO L131 PetriNetUnfolder]: For 3822/3883 co-relation queries the response was YES. [2023-09-01 14:49:04,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11382 conditions, 4053 events. 2297/4053 cut-off events. For 3822/3883 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27679 event pairs, 594 based on Foata normal form. 126/3920 useless extension candidates. Maximal degree in co-relation 8308. Up to 3150 conditions per place. [2023-09-01 14:49:04,109 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 41 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-09-01 14:49:04,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 338 flow [2023-09-01 14:49:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:49:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:49:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-09-01 14:49:04,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-09-01 14:49:04,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-09-01 14:49:04,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-09-01 14:49:04,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:04,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-09-01 14:49:04,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:04,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:04,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:04,114 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 214 flow. Second operand 3 states and 390 transitions. [2023-09-01 14:49:04,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 338 flow [2023-09-01 14:49:04,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 332 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 14:49:04,137 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 210 flow [2023-09-01 14:49:04,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-09-01 14:49:04,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-09-01 14:49:04,138 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 210 flow [2023-09-01 14:49:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:04,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:04,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 14:49:04,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:04,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash -13750227, now seen corresponding path program 6 times [2023-09-01 14:49:04,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:04,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569365620] [2023-09-01 14:49:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569365620] [2023-09-01 14:49:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569365620] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:05,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:05,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:49:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636527504] [2023-09-01 14:49:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:05,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:49:05,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:49:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:49:05,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:49:05,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 210 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:05,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:05,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:49:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:08,865 INFO L130 PetriNetUnfolder]: 15002/22776 cut-off events. [2023-09-01 14:49:08,865 INFO L131 PetriNetUnfolder]: For 18350/18350 co-relation queries the response was YES. [2023-09-01 14:49:08,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 22776 events. 15002/22776 cut-off events. For 18350/18350 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 146746 event pairs, 3417 based on Foata normal form. 1/22777 useless extension candidates. Maximal degree in co-relation 49841. Up to 7468 conditions per place. [2023-09-01 14:49:08,993 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 224 selfloop transitions, 25 changer transitions 16/269 dead transitions. [2023-09-01 14:49:08,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 269 transitions, 1481 flow [2023-09-01 14:49:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:49:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:49:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1519 transitions. [2023-09-01 14:49:08,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49095022624434387 [2023-09-01 14:49:08,999 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1519 transitions. [2023-09-01 14:49:08,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1519 transitions. [2023-09-01 14:49:09,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:09,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1519 transitions. [2023-09-01 14:49:09,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.5) internal successors, (1519), 14 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:09,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:09,008 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:09,008 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 210 flow. Second operand 14 states and 1519 transitions. [2023-09-01 14:49:09,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 269 transitions, 1481 flow [2023-09-01 14:49:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 269 transitions, 1477 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:49:09,244 INFO L231 Difference]: Finished difference. Result has 94 places, 69 transitions, 411 flow [2023-09-01 14:49:09,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2023-09-01 14:49:09,245 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2023-09-01 14:49:09,245 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 411 flow [2023-09-01 14:49:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:09,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:09,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 14:49:09,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:09,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1266939235, now seen corresponding path program 7 times [2023-09-01 14:49:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:09,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484415037] [2023-09-01 14:49:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:09,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:11,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:11,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484415037] [2023-09-01 14:49:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484415037] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:11,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:49:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734398677] [2023-09-01 14:49:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:49:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:49:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:49:11,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:49:11,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:11,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:11,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:49:11,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:16,315 INFO L130 PetriNetUnfolder]: 28410/43805 cut-off events. [2023-09-01 14:49:16,316 INFO L131 PetriNetUnfolder]: For 100107/100107 co-relation queries the response was YES. [2023-09-01 14:49:16,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154993 conditions, 43805 events. 28410/43805 cut-off events. For 100107/100107 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 319983 event pairs, 6949 based on Foata normal form. 1/43806 useless extension candidates. Maximal degree in co-relation 154752. Up to 14141 conditions per place. [2023-09-01 14:49:16,646 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 258 selfloop transitions, 31 changer transitions 9/302 dead transitions. [2023-09-01 14:49:16,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 302 transitions, 2201 flow [2023-09-01 14:49:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:49:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:49:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2023-09-01 14:49:16,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48933419521654814 [2023-09-01 14:49:16,651 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2023-09-01 14:49:16,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2023-09-01 14:49:16,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:16,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2023-09-01 14:49:16,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:16,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:16,663 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:16,663 INFO L175 Difference]: Start difference. First operand has 94 places, 69 transitions, 411 flow. Second operand 14 states and 1514 transitions. [2023-09-01 14:49:16,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 302 transitions, 2201 flow [2023-09-01 14:49:19,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 302 transitions, 2113 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-09-01 14:49:19,141 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 732 flow [2023-09-01 14:49:19,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=732, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2023-09-01 14:49:19,142 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2023-09-01 14:49:19,142 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 732 flow [2023-09-01 14:49:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:19,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:19,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 14:49:19,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:19,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 30479711, now seen corresponding path program 8 times [2023-09-01 14:49:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243819048] [2023-09-01 14:49:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243819048] [2023-09-01 14:49:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243819048] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:20,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:20,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:49:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400455794] [2023-09-01 14:49:20,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:49:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:49:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:49:20,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:49:20,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 732 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:20,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:20,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:49:20,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:28,448 INFO L130 PetriNetUnfolder]: 41197/66288 cut-off events. [2023-09-01 14:49:28,449 INFO L131 PetriNetUnfolder]: For 272737/272737 co-relation queries the response was YES. [2023-09-01 14:49:29,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268266 conditions, 66288 events. 41197/66288 cut-off events. For 272737/272737 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 551214 event pairs, 11845 based on Foata normal form. 1/66281 useless extension candidates. Maximal degree in co-relation 267499. Up to 20176 conditions per place. [2023-09-01 14:49:29,205 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 349 selfloop transitions, 46 changer transitions 10/409 dead transitions. [2023-09-01 14:49:29,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 409 transitions, 3727 flow [2023-09-01 14:49:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:49:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:49:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1525 transitions. [2023-09-01 14:49:29,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928894634776988 [2023-09-01 14:49:29,211 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1525 transitions. [2023-09-01 14:49:29,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1525 transitions. [2023-09-01 14:49:29,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:29,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1525 transitions. [2023-09-01 14:49:29,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 14 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:29,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:29,221 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:29,221 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 732 flow. Second operand 14 states and 1525 transitions. [2023-09-01 14:49:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 409 transitions, 3727 flow [2023-09-01 14:49:34,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 409 transitions, 3642 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-09-01 14:49:34,642 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1329 flow [2023-09-01 14:49:34,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1329, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2023-09-01 14:49:34,642 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2023-09-01 14:49:34,643 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1329 flow [2023-09-01 14:49:34,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:34,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:49:34,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:49:34,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 14:49:34,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:49:34,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:49:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1487531239, now seen corresponding path program 9 times [2023-09-01 14:49:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:49:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577482297] [2023-09-01 14:49:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:49:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:49:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:49:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:49:35,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:49:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577482297] [2023-09-01 14:49:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577482297] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:49:35,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:49:35,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:49:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265205201] [2023-09-01 14:49:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:49:35,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:49:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:49:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:49:35,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:49:36,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:49:36,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1329 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:36,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:49:36,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:49:36,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:49:47,780 INFO L130 PetriNetUnfolder]: 54513/90805 cut-off events. [2023-09-01 14:49:47,780 INFO L131 PetriNetUnfolder]: For 630352/630352 co-relation queries the response was YES. [2023-09-01 14:49:48,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419058 conditions, 90805 events. 54513/90805 cut-off events. For 630352/630352 co-relation queries the response was YES. Maximal size of possible extension queue 3630. Compared 828791 event pairs, 14555 based on Foata normal form. 1/90806 useless extension candidates. Maximal degree in co-relation 417605. Up to 30063 conditions per place. [2023-09-01 14:49:48,777 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 391 selfloop transitions, 60 changer transitions 10/465 dead transitions. [2023-09-01 14:49:48,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 465 transitions, 5078 flow [2023-09-01 14:49:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:49:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:49:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1521 transitions. [2023-09-01 14:49:48,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2023-09-01 14:49:48,780 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1521 transitions. [2023-09-01 14:49:48,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1521 transitions. [2023-09-01 14:49:48,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:49:48,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1521 transitions. [2023-09-01 14:49:48,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.64285714285714) internal successors, (1521), 14 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:48,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:48,789 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:49:48,789 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1329 flow. Second operand 14 states and 1521 transitions. [2023-09-01 14:49:48,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 465 transitions, 5078 flow [2023-09-01 14:50:00,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 465 transitions, 4952 flow, removed 58 selfloop flow, removed 3 redundant places. [2023-09-01 14:50:00,586 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2155 flow [2023-09-01 14:50:00,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2155, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2023-09-01 14:50:00,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2023-09-01 14:50:00,587 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2155 flow [2023-09-01 14:50:00,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:00,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:50:00,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:50:00,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 14:50:00,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:50:00,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:50:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1107932573, now seen corresponding path program 10 times [2023-09-01 14:50:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:50:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709872941] [2023-09-01 14:50:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:50:00,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:50:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:50:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:50:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:50:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709872941] [2023-09-01 14:50:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709872941] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:50:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:50:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:50:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275598274] [2023-09-01 14:50:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:50:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:50:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:50:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:50:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:50:02,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:50:02,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2155 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:02,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:50:02,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:50:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:50:18,227 INFO L130 PetriNetUnfolder]: 66044/112152 cut-off events. [2023-09-01 14:50:18,227 INFO L131 PetriNetUnfolder]: For 1059112/1059112 co-relation queries the response was YES. [2023-09-01 14:50:19,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564738 conditions, 112152 events. 66044/112152 cut-off events. For 1059112/1059112 co-relation queries the response was YES. Maximal size of possible extension queue 4704. Compared 1088300 event pairs, 20405 based on Foata normal form. 1/112153 useless extension candidates. Maximal degree in co-relation 562726. Up to 32599 conditions per place. [2023-09-01 14:50:19,747 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 434 selfloop transitions, 98 changer transitions 17/553 dead transitions. [2023-09-01 14:50:19,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 553 transitions, 6802 flow [2023-09-01 14:50:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:50:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:50:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1536 transitions. [2023-09-01 14:50:19,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964447317388494 [2023-09-01 14:50:19,752 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1536 transitions. [2023-09-01 14:50:19,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1536 transitions. [2023-09-01 14:50:19,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:50:19,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1536 transitions. [2023-09-01 14:50:19,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.71428571428571) internal successors, (1536), 14 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:19,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:19,761 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:19,761 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2155 flow. Second operand 14 states and 1536 transitions. [2023-09-01 14:50:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 553 transitions, 6802 flow [2023-09-01 14:50:42,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 553 transitions, 6661 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-09-01 14:50:42,105 INFO L231 Difference]: Finished difference. Result has 179 places, 228 transitions, 3285 flow [2023-09-01 14:50:42,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3285, PETRI_PLACES=179, PETRI_TRANSITIONS=228} [2023-09-01 14:50:42,106 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2023-09-01 14:50:42,106 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 228 transitions, 3285 flow [2023-09-01 14:50:42,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:42,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:50:42,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:50:42,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 14:50:42,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:50:42,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:50:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1586974173, now seen corresponding path program 11 times [2023-09-01 14:50:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:50:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235323211] [2023-09-01 14:50:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:50:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:50:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:50:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:50:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:50:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235323211] [2023-09-01 14:50:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235323211] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:50:43,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:50:43,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:50:43,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957829790] [2023-09-01 14:50:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:50:43,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:50:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:50:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:50:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:50:43,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:50:43,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 228 transitions, 3285 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:50:43,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:50:43,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:50:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:51:08,767 INFO L130 PetriNetUnfolder]: 90242/156259 cut-off events. [2023-09-01 14:51:08,767 INFO L131 PetriNetUnfolder]: For 2095632/2095632 co-relation queries the response was YES. [2023-09-01 14:51:10,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867893 conditions, 156259 events. 90242/156259 cut-off events. For 2095632/2095632 co-relation queries the response was YES. Maximal size of possible extension queue 6832. Compared 1620769 event pairs, 30341 based on Foata normal form. 1/156260 useless extension candidates. Maximal degree in co-relation 864748. Up to 55511 conditions per place. [2023-09-01 14:51:11,136 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 526 selfloop transitions, 96 changer transitions 9/635 dead transitions. [2023-09-01 14:51:11,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 635 transitions, 9307 flow [2023-09-01 14:51:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:51:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:51:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1526 transitions. [2023-09-01 14:51:11,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-09-01 14:51:11,141 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1526 transitions. [2023-09-01 14:51:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1526 transitions. [2023-09-01 14:51:11,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:51:11,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1526 transitions. [2023-09-01 14:51:11,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:51:11,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:51:11,149 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:51:11,149 INFO L175 Difference]: Start difference. First operand has 179 places, 228 transitions, 3285 flow. Second operand 14 states and 1526 transitions. [2023-09-01 14:51:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 635 transitions, 9307 flow [2023-09-01 14:52:54,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 635 transitions, 9071 flow, removed 113 selfloop flow, removed 3 redundant places. [2023-09-01 14:52:54,252 INFO L231 Difference]: Finished difference. Result has 198 places, 284 transitions, 4520 flow [2023-09-01 14:52:54,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4520, PETRI_PLACES=198, PETRI_TRANSITIONS=284} [2023-09-01 14:52:54,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2023-09-01 14:52:54,253 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 284 transitions, 4520 flow [2023-09-01 14:52:54,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:52:54,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:52:54,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:52:54,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 14:52:54,254 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:52:54,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:52:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1403488815, now seen corresponding path program 12 times [2023-09-01 14:52:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:52:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127404386] [2023-09-01 14:52:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:52:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:52:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:52:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:52:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:52:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127404386] [2023-09-01 14:52:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127404386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:52:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:52:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:52:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407225904] [2023-09-01 14:52:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:52:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:52:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:52:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:52:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:52:55,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:52:55,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 284 transitions, 4520 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:52:55,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:52:55,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:52:55,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:53:29,842 INFO L130 PetriNetUnfolder]: 100009/174328 cut-off events. [2023-09-01 14:53:29,842 INFO L131 PetriNetUnfolder]: For 2773027/2773027 co-relation queries the response was YES. [2023-09-01 14:53:32,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019138 conditions, 174328 events. 100009/174328 cut-off events. For 2773027/2773027 co-relation queries the response was YES. Maximal size of possible extension queue 7845. Compared 1852021 event pairs, 41113 based on Foata normal form. 1/174329 useless extension candidates. Maximal degree in co-relation 1015423. Up to 70934 conditions per place. [2023-09-01 14:53:32,803 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 513 selfloop transitions, 121 changer transitions 10/648 dead transitions. [2023-09-01 14:53:32,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 648 transitions, 9896 flow [2023-09-01 14:53:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:53:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:53:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1538 transitions. [2023-09-01 14:53:32,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970911441499677 [2023-09-01 14:53:32,806 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1538 transitions. [2023-09-01 14:53:32,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1538 transitions. [2023-09-01 14:53:32,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:53:32,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1538 transitions. [2023-09-01 14:53:32,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.85714285714286) internal successors, (1538), 14 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:53:32,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:53:32,814 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:53:32,814 INFO L175 Difference]: Start difference. First operand has 198 places, 284 transitions, 4520 flow. Second operand 14 states and 1538 transitions. [2023-09-01 14:53:32,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 648 transitions, 9896 flow [2023-09-01 14:55:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 648 transitions, 9466 flow, removed 187 selfloop flow, removed 3 redundant places. [2023-09-01 14:55:45,788 INFO L231 Difference]: Finished difference. Result has 217 places, 332 transitions, 5616 flow [2023-09-01 14:55:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5616, PETRI_PLACES=217, PETRI_TRANSITIONS=332} [2023-09-01 14:55:45,789 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2023-09-01 14:55:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 332 transitions, 5616 flow [2023-09-01 14:55:45,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:55:45,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:55:45,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:55:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 14:55:45,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:55:45,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:55:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash -624871641, now seen corresponding path program 13 times [2023-09-01 14:55:45,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:55:45,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275469429] [2023-09-01 14:55:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:55:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:55:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:55:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:55:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:55:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275469429] [2023-09-01 14:55:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275469429] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:55:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:55:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 14:55:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722739693] [2023-09-01 14:55:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:55:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:55:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:55:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:55:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:55:47,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 14:55:47,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 332 transitions, 5616 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:55:47,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:55:47,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 14:55:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand