/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 13:05:15,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 13:05:15,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 13:05:15,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 13:05:15,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 13:05:15,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 13:05:15,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 13:05:15,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 13:05:15,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 13:05:15,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 13:05:15,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 13:05:15,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 13:05:15,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 13:05:15,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 13:05:15,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 13:05:15,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 13:05:15,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 13:05:15,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 13:05:15,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 13:05:15,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 13:05:15,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 13:05:15,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 13:05:15,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 13:05:15,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 13:05:15,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 13:05:15,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 13:05:15,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 13:05:15,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 13:05:15,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 13:05:15,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 13:05:15,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 13:05:15,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 13:05:15,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 13:05:15,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 13:05:15,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 13:05:15,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 13:05:15,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 13:05:15,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 13:05:15,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 13:05:15,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 13:05:15,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 13:05:15,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 13:05:15,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 13:05:15,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 13:05:15,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 13:05:15,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 13:05:15,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 13:05:15,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 13:05:15,479 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 13:05:15,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 13:05:15,479 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 13:05:15,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 13:05:15,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 13:05:15,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 13:05:15,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 13:05:15,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 13:05:15,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 13:05:15,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 13:05:15,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 13:05:15,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 13:05:15,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 13:05:15,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 13:05:15,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:05:15,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 13:05:15,490 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 13:05:15,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 13:05:15,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 13:05:15,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 13:05:15,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 13:05:15,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 13:05:15,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 13:05:15,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 13:05:15,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 13:05:15,805 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 13:05:15,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2022-12-12 13:05:16,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 13:05:17,044 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 13:05:17,045 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2022-12-12 13:05:17,053 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50b065b4/13c7dd97163144bbb36ba6b9fd7ce56e/FLAG42e765b8f [2022-12-12 13:05:17,068 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50b065b4/13c7dd97163144bbb36ba6b9fd7ce56e [2022-12-12 13:05:17,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 13:05:17,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 13:05:17,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 13:05:17,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 13:05:17,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 13:05:17,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d6e42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17, skipping insertion in model container [2022-12-12 13:05:17,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 13:05:17,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 13:05:17,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:05:17,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:05:17,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:05:17,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:05:17,279 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2022-12-12 13:05:17,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:05:17,309 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 13:05:17,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:05:17,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:05:17,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:05:17,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:05:17,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2022-12-12 13:05:17,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:05:17,369 INFO L208 MainTranslator]: Completed translation [2022-12-12 13:05:17,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17 WrapperNode [2022-12-12 13:05:17,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 13:05:17,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 13:05:17,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 13:05:17,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 13:05:17,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,422 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 138 [2022-12-12 13:05:17,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 13:05:17,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 13:05:17,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 13:05:17,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 13:05:17,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 13:05:17,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 13:05:17,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 13:05:17,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 13:05:17,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (1/1) ... [2022-12-12 13:05:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:05:17,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:17,505 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) [2022-12-12 13:05:17,529 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 [2022-12-12 13:05:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 13:05:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 13:05:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 13:05:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 13:05:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 13:05:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 13:05:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 13:05:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 13:05:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 13:05:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 13:05:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 13:05:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 13:05:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 13:05:17,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 13:05:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 13:05:17,554 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 13:05:17,697 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 13:05:17,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 13:05:17,983 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 13:05:18,083 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 13:05:18,083 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 13:05:18,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:05:18 BoogieIcfgContainer [2022-12-12 13:05:18,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 13:05:18,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 13:05:18,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 13:05:18,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 13:05:18,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:05:17" (1/3) ... [2022-12-12 13:05:18,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b86632a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:05:18, skipping insertion in model container [2022-12-12 13:05:18,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:05:17" (2/3) ... [2022-12-12 13:05:18,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b86632a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:05:18, skipping insertion in model container [2022-12-12 13:05:18,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:05:18" (3/3) ... [2022-12-12 13:05:18,093 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2022-12-12 13:05:18,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 13:05:18,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 13:05:18,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 13:05:18,190 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 13:05:18,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 230 flow [2022-12-12 13:05:18,272 INFO L130 PetriNetUnfolder]: 9/105 cut-off events. [2022-12-12 13:05:18,272 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 13:05:18,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 9/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-12-12 13:05:18,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 230 flow [2022-12-12 13:05:18,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 97 transitions, 206 flow [2022-12-12 13:05:18,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 13:05:18,294 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=false, 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;@31af9973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 13:05:18,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 13:05:18,320 INFO L130 PetriNetUnfolder]: 9/96 cut-off events. [2022-12-12 13:05:18,320 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 13:05:18,320 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:18,321 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:18,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash -516605476, now seen corresponding path program 1 times [2022-12-12 13:05:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:18,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754709467] [2022-12-12 13:05:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:18,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:18,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:18,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754709467] [2022-12-12 13:05:18,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754709467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:05:18,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:05:18,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:05:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786181661] [2022-12-12 13:05:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:05:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:05:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:05:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:05:18,967 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 107 [2022-12-12 13:05:18,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:18,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:18,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 107 [2022-12-12 13:05:18,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:19,108 INFO L130 PetriNetUnfolder]: 13/144 cut-off events. [2022-12-12 13:05:19,108 INFO L131 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2022-12-12 13:05:19,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 144 events. 13/144 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 0 based on Foata normal form. 18/149 useless extension candidates. Maximal degree in co-relation 87. Up to 24 conditions per place. [2022-12-12 13:05:19,113 INFO L137 encePairwiseOnDemand]: 92/107 looper letters, 20 selfloop transitions, 3 changer transitions 8/100 dead transitions. [2022-12-12 13:05:19,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 283 flow [2022-12-12 13:05:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 13:05:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 13:05:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 587 transitions. [2022-12-12 13:05:19,132 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7837116154873164 [2022-12-12 13:05:19,138 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2022-12-12 13:05:19,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 283 flow [2022-12-12 13:05:19,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 251 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-12 13:05:19,146 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 251 flow [2022-12-12 13:05:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:19,146 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:19,146 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:19,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 13:05:19,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:19,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1927121920, now seen corresponding path program 1 times [2022-12-12 13:05:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:19,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47161532] [2022-12-12 13:05:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:19,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:19,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47161532] [2022-12-12 13:05:19,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47161532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:05:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:05:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 13:05:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902201442] [2022-12-12 13:05:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:05:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:05:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:05:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:05:19,409 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 107 [2022-12-12 13:05:19,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:19,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:19,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 107 [2022-12-12 13:05:19,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:19,650 INFO L130 PetriNetUnfolder]: 82/371 cut-off events. [2022-12-12 13:05:19,650 INFO L131 PetriNetUnfolder]: For 75/83 co-relation queries the response was YES. [2022-12-12 13:05:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 371 events. 82/371 cut-off events. For 75/83 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1599 event pairs, 30 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 110. Up to 123 conditions per place. [2022-12-12 13:05:19,655 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 44 selfloop transitions, 8 changer transitions 9/122 dead transitions. [2022-12-12 13:05:19,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 122 transitions, 430 flow [2022-12-12 13:05:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:05:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:05:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 630 transitions. [2022-12-12 13:05:19,659 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.735981308411215 [2022-12-12 13:05:19,660 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2022-12-12 13:05:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 122 transitions, 430 flow [2022-12-12 13:05:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 122 transitions, 415 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-12 13:05:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 122 transitions, 415 flow [2022-12-12 13:05:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:19,668 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:19,668 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 13:05:19,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash -831514686, now seen corresponding path program 1 times [2022-12-12 13:05:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150650493] [2022-12-12 13:05:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:19,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:19,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150650493] [2022-12-12 13:05:19,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150650493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:05:19,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:05:19,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 13:05:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686573398] [2022-12-12 13:05:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:05:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:05:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:05:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:05:19,844 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 107 [2022-12-12 13:05:19,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 122 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:19,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:19,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 107 [2022-12-12 13:05:19,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:19,986 INFO L130 PetriNetUnfolder]: 85/326 cut-off events. [2022-12-12 13:05:19,986 INFO L131 PetriNetUnfolder]: For 169/216 co-relation queries the response was YES. [2022-12-12 13:05:19,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 326 events. 85/326 cut-off events. For 169/216 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1261 event pairs, 39 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 342. Up to 144 conditions per place. [2022-12-12 13:05:19,990 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 29 selfloop transitions, 6 changer transitions 21/117 dead transitions. [2022-12-12 13:05:19,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 117 transitions, 478 flow [2022-12-12 13:05:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:05:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:05:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2022-12-12 13:05:19,993 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7313084112149533 [2022-12-12 13:05:19,994 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 13 predicate places. [2022-12-12 13:05:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 117 transitions, 478 flow [2022-12-12 13:05:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 117 transitions, 448 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-12 13:05:19,998 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 448 flow [2022-12-12 13:05:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:19,999 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:20,000 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:20,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 13:05:20,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash 299949084, now seen corresponding path program 1 times [2022-12-12 13:05:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921293425] [2022-12-12 13:05:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:20,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921293425] [2022-12-12 13:05:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921293425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977463166] [2022-12-12 13:05:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:20,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:20,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 13:05:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:20,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 13:05:20,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:20,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:20,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977463166] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:20,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 13:05:20,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-12 13:05:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118287381] [2022-12-12 13:05:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:05:20,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:05:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:05:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-12 13:05:20,611 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 107 [2022-12-12 13:05:20,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:20,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:20,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 107 [2022-12-12 13:05:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:20,762 INFO L130 PetriNetUnfolder]: 79/317 cut-off events. [2022-12-12 13:05:20,763 INFO L131 PetriNetUnfolder]: For 275/359 co-relation queries the response was YES. [2022-12-12 13:05:20,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 317 events. 79/317 cut-off events. For 275/359 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1163 event pairs, 18 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 417. Up to 135 conditions per place. [2022-12-12 13:05:20,765 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 35 selfloop transitions, 7 changer transitions 20/123 dead transitions. [2022-12-12 13:05:20,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 599 flow [2022-12-12 13:05:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 13:05:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 13:05:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2022-12-12 13:05:20,767 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7383177570093458 [2022-12-12 13:05:20,768 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 15 predicate places. [2022-12-12 13:05:20,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 599 flow [2022-12-12 13:05:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 526 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-12-12 13:05:20,771 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 526 flow [2022-12-12 13:05:20,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:20,771 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:20,771 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:20,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:20,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:20,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1135977914, now seen corresponding path program 1 times [2022-12-12 13:05:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:20,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983122082] [2022-12-12 13:05:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:21,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983122082] [2022-12-12 13:05:21,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983122082] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109410953] [2022-12-12 13:05:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:21,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:21,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 13:05:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:21,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 13:05:21,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:21,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:21,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109410953] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:21,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 13:05:21,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-12 13:05:21,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594402569] [2022-12-12 13:05:21,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:05:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:05:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:05:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-12 13:05:21,418 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 107 [2022-12-12 13:05:21,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:21,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:21,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 107 [2022-12-12 13:05:21,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:21,531 INFO L130 PetriNetUnfolder]: 69/286 cut-off events. [2022-12-12 13:05:21,532 INFO L131 PetriNetUnfolder]: For 358/474 co-relation queries the response was YES. [2022-12-12 13:05:21,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 286 events. 69/286 cut-off events. For 358/474 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 958 event pairs, 9 based on Foata normal form. 5/268 useless extension candidates. Maximal degree in co-relation 399. Up to 113 conditions per place. [2022-12-12 13:05:21,534 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 41 selfloop transitions, 8 changer transitions 20/130 dead transitions. [2022-12-12 13:05:21,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 702 flow [2022-12-12 13:05:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 13:05:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 13:05:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2022-12-12 13:05:21,536 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7383177570093458 [2022-12-12 13:05:21,537 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 18 predicate places. [2022-12-12 13:05:21,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 702 flow [2022-12-12 13:05:21,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 130 transitions, 617 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-12-12 13:05:21,551 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 130 transitions, 617 flow [2022-12-12 13:05:21,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:21,552 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:21,552 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:21,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:21,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:21,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2057691454, now seen corresponding path program 1 times [2022-12-12 13:05:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:21,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317967180] [2022-12-12 13:05:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:22,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:22,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317967180] [2022-12-12 13:05:22,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317967180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:22,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207875453] [2022-12-12 13:05:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:22,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:22,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:22,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:22,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 13:05:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:22,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-12 13:05:22,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:23,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 13:05:23,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:23,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:23,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:23,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207875453] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:23,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:23,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 8] total 32 [2022-12-12 13:05:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683036713] [2022-12-12 13:05:23,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 13:05:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 13:05:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2022-12-12 13:05:23,612 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:05:23,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 617 flow. Second operand has 32 states, 32 states have (on average 41.75) internal successors, (1336), 32 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:23,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:23,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:05:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:25,834 INFO L130 PetriNetUnfolder]: 364/886 cut-off events. [2022-12-12 13:05:25,834 INFO L131 PetriNetUnfolder]: For 918/928 co-relation queries the response was YES. [2022-12-12 13:05:25,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 886 events. 364/886 cut-off events. For 918/928 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4595 event pairs, 48 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 591. Up to 324 conditions per place. [2022-12-12 13:05:25,845 INFO L137 encePairwiseOnDemand]: 82/107 looper letters, 116 selfloop transitions, 41 changer transitions 40/230 dead transitions. [2022-12-12 13:05:25,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 230 transitions, 1576 flow [2022-12-12 13:05:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 13:05:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 13:05:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1582 transitions. [2022-12-12 13:05:25,851 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3995958575397828 [2022-12-12 13:05:25,854 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 50 predicate places. [2022-12-12 13:05:25,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 230 transitions, 1576 flow [2022-12-12 13:05:25,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 230 transitions, 1129 flow, removed 201 selfloop flow, removed 15 redundant places. [2022-12-12 13:05:25,861 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 1129 flow [2022-12-12 13:05:25,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.75) internal successors, (1336), 32 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:25,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:25,863 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:25,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:26,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1371914916, now seen corresponding path program 2 times [2022-12-12 13:05:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:26,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292869591] [2022-12-12 13:05:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:26,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:26,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292869591] [2022-12-12 13:05:26,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292869591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663033682] [2022-12-12 13:05:26,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:05:26,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:26,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:26,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:26,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 13:05:26,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:05:26,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 13:05:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:27,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:05:27,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 13:05:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:27,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:27,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:05:27,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-12-12 13:05:27,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-12 13:05:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:27,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663033682] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:27,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:27,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 35 [2022-12-12 13:05:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444167410] [2022-12-12 13:05:27,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:27,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 13:05:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 13:05:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1056, Unknown=9, NotChecked=0, Total=1190 [2022-12-12 13:05:27,817 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 107 [2022-12-12 13:05:27,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 1129 flow. Second operand has 35 states, 35 states have (on average 44.22857142857143) internal successors, (1548), 35 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:27,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:27,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 107 [2022-12-12 13:05:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:28,914 INFO L130 PetriNetUnfolder]: 505/1186 cut-off events. [2022-12-12 13:05:28,914 INFO L131 PetriNetUnfolder]: For 1106/1186 co-relation queries the response was YES. [2022-12-12 13:05:28,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1186 events. 505/1186 cut-off events. For 1106/1186 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6933 event pairs, 38 based on Foata normal form. 33/1119 useless extension candidates. Maximal degree in co-relation 2349. Up to 566 conditions per place. [2022-12-12 13:05:28,924 INFO L137 encePairwiseOnDemand]: 86/107 looper letters, 161 selfloop transitions, 55 changer transitions 45/299 dead transitions. [2022-12-12 13:05:28,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 299 transitions, 2204 flow [2022-12-12 13:05:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 13:05:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 13:05:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1299 transitions. [2022-12-12 13:05:28,929 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4335781041388518 [2022-12-12 13:05:28,929 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 62 predicate places. [2022-12-12 13:05:28,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 299 transitions, 2204 flow [2022-12-12 13:05:28,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 299 transitions, 1723 flow, removed 215 selfloop flow, removed 14 redundant places. [2022-12-12 13:05:28,945 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 299 transitions, 1723 flow [2022-12-12 13:05:28,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 44.22857142857143) internal successors, (1548), 35 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:28,946 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:28,946 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:28,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:29,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1671532842, now seen corresponding path program 3 times [2022-12-12 13:05:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:29,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827363376] [2022-12-12 13:05:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827363376] [2022-12-12 13:05:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827363376] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321111270] [2022-12-12 13:05:30,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:05:30,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:30,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:30,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:30,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 13:05:30,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 13:05:30,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:30,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-12 13:05:30,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:30,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:30,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:05:30,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 18 [2022-12-12 13:05:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:30,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321111270] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:30,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:30,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 8] total 26 [2022-12-12 13:05:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465078675] [2022-12-12 13:05:30,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 13:05:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 13:05:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2022-12-12 13:05:30,688 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:05:30,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 299 transitions, 1723 flow. Second operand has 26 states, 26 states have (on average 42.30769230769231) internal successors, (1100), 26 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:30,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:30,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:05:30,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:31,816 INFO L130 PetriNetUnfolder]: 638/1500 cut-off events. [2022-12-12 13:05:31,817 INFO L131 PetriNetUnfolder]: For 1424/1522 co-relation queries the response was YES. [2022-12-12 13:05:31,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 1500 events. 638/1500 cut-off events. For 1424/1522 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9550 event pairs, 36 based on Foata normal form. 21/1395 useless extension candidates. Maximal degree in co-relation 3897. Up to 829 conditions per place. [2022-12-12 13:05:31,829 INFO L137 encePairwiseOnDemand]: 83/107 looper letters, 234 selfloop transitions, 34 changer transitions 60/361 dead transitions. [2022-12-12 13:05:31,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 361 transitions, 2818 flow [2022-12-12 13:05:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 13:05:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 13:05:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1449 transitions. [2022-12-12 13:05:31,835 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3982957669048928 [2022-12-12 13:05:31,837 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 81 predicate places. [2022-12-12 13:05:31,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 361 transitions, 2818 flow [2022-12-12 13:05:31,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 361 transitions, 2319 flow, removed 222 selfloop flow, removed 18 redundant places. [2022-12-12 13:05:31,858 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 361 transitions, 2319 flow [2022-12-12 13:05:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 42.30769230769231) internal successors, (1100), 26 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:31,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:31,864 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:31,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:32,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:32,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1366784878, now seen corresponding path program 4 times [2022-12-12 13:05:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:32,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335849777] [2022-12-12 13:05:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:32,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:32,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335849777] [2022-12-12 13:05:32,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335849777] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:32,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949056017] [2022-12-12 13:05:32,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 13:05:32,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:32,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:32,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:32,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 13:05:32,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 13:05:32,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:32,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-12 13:05:32,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:32,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 13:05:32,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:32,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:33,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:33,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949056017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:33,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:33,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 8] total 30 [2022-12-12 13:05:33,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839226863] [2022-12-12 13:05:33,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:33,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 13:05:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:33,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 13:05:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-12-12 13:05:33,254 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:05:33,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 361 transitions, 2319 flow. Second operand has 30 states, 30 states have (on average 41.86666666666667) internal successors, (1256), 30 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:33,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:33,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:05:33,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:34,668 INFO L130 PetriNetUnfolder]: 753/1756 cut-off events. [2022-12-12 13:05:34,668 INFO L131 PetriNetUnfolder]: For 2054/2180 co-relation queries the response was YES. [2022-12-12 13:05:34,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 1756 events. 753/1756 cut-off events. For 2054/2180 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11753 event pairs, 44 based on Foata normal form. 34/1638 useless extension candidates. Maximal degree in co-relation 4857. Up to 851 conditions per place. [2022-12-12 13:05:34,681 INFO L137 encePairwiseOnDemand]: 83/107 looper letters, 270 selfloop transitions, 52 changer transitions 65/420 dead transitions. [2022-12-12 13:05:34,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 420 transitions, 3659 flow [2022-12-12 13:05:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 13:05:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 13:05:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1489 transitions. [2022-12-12 13:05:34,684 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39759679572763684 [2022-12-12 13:05:34,685 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 97 predicate places. [2022-12-12 13:05:34,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 420 transitions, 3659 flow [2022-12-12 13:05:34,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 420 transitions, 2862 flow, removed 367 selfloop flow, removed 23 redundant places. [2022-12-12 13:05:34,703 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 420 transitions, 2862 flow [2022-12-12 13:05:34,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 41.86666666666667) internal successors, (1256), 30 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:34,704 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:34,704 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:34,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:34,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:34,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash 368454546, now seen corresponding path program 5 times [2022-12-12 13:05:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:34,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497406363] [2022-12-12 13:05:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:35,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497406363] [2022-12-12 13:05:35,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497406363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:35,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29473715] [2022-12-12 13:05:35,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 13:05:35,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:35,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:35,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:35,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 13:05:35,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:05:35,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:35,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-12 13:05:35,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:35,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:35,620 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 13:05:35,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-12 13:05:35,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 13:05:35,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:35,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 13:05:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:36,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:36,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-12 13:05:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:36,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29473715] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:36,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:36,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 9] total 29 [2022-12-12 13:05:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194292413] [2022-12-12 13:05:36,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:36,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 13:05:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 13:05:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-12-12 13:05:36,302 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 107 [2022-12-12 13:05:36,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 420 transitions, 2862 flow. Second operand has 29 states, 29 states have (on average 39.37931034482759) internal successors, (1142), 29 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:36,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:36,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 107 [2022-12-12 13:05:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:37,616 INFO L130 PetriNetUnfolder]: 883/2027 cut-off events. [2022-12-12 13:05:37,616 INFO L131 PetriNetUnfolder]: For 2307/2414 co-relation queries the response was YES. [2022-12-12 13:05:37,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 2027 events. 883/2027 cut-off events. For 2307/2414 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13908 event pairs, 44 based on Foata normal form. 42/1891 useless extension candidates. Maximal degree in co-relation 5797. Up to 880 conditions per place. [2022-12-12 13:05:37,632 INFO L137 encePairwiseOnDemand]: 83/107 looper letters, 311 selfloop transitions, 71 changer transitions 70/482 dead transitions. [2022-12-12 13:05:37,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 482 transitions, 4381 flow [2022-12-12 13:05:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 13:05:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 13:05:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1466 transitions. [2022-12-12 13:05:37,636 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37029552917403386 [2022-12-12 13:05:37,637 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 110 predicate places. [2022-12-12 13:05:37,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 482 transitions, 4381 flow [2022-12-12 13:05:37,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 482 transitions, 3454 flow, removed 432 selfloop flow, removed 23 redundant places. [2022-12-12 13:05:37,661 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 482 transitions, 3454 flow [2022-12-12 13:05:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 39.37931034482759) internal successors, (1142), 29 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:37,662 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:37,662 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:37,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:37,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1793596838, now seen corresponding path program 6 times [2022-12-12 13:05:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:37,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437281780] [2022-12-12 13:05:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:38,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437281780] [2022-12-12 13:05:38,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437281780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433513394] [2022-12-12 13:05:38,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 13:05:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:38,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:38,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:38,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 13:05:38,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 13:05:38,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:38,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 13:05:38,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:38,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:38,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433513394] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:38,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:38,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-12-12 13:05:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427113085] [2022-12-12 13:05:38,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:38,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 13:05:38,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 13:05:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-12-12 13:05:38,504 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2022-12-12 13:05:38,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 482 transitions, 3454 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:38,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:38,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2022-12-12 13:05:38,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:39,261 INFO L130 PetriNetUnfolder]: 1619/3685 cut-off events. [2022-12-12 13:05:39,262 INFO L131 PetriNetUnfolder]: For 5058/5127 co-relation queries the response was YES. [2022-12-12 13:05:39,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14451 conditions, 3685 events. 1619/3685 cut-off events. For 5058/5127 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28534 event pairs, 39 based on Foata normal form. 21/3420 useless extension candidates. Maximal degree in co-relation 12648. Up to 1103 conditions per place. [2022-12-12 13:05:39,285 INFO L137 encePairwiseOnDemand]: 91/107 looper letters, 421 selfloop transitions, 69 changer transitions 107/749 dead transitions. [2022-12-12 13:05:39,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 749 transitions, 6939 flow [2022-12-12 13:05:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 13:05:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 13:05:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1435 transitions. [2022-12-12 13:05:39,319 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.705853418593212 [2022-12-12 13:05:39,320 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 105 predicate places. [2022-12-12 13:05:39,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 749 transitions, 6939 flow [2022-12-12 13:05:39,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 749 transitions, 6167 flow, removed 378 selfloop flow, removed 6 redundant places. [2022-12-12 13:05:39,379 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 749 transitions, 6167 flow [2022-12-12 13:05:39,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:39,380 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:39,380 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:39,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:39,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-12 13:05:39,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash -472298472, now seen corresponding path program 7 times [2022-12-12 13:05:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:39,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524027758] [2022-12-12 13:05:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:39,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:39,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524027758] [2022-12-12 13:05:39,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524027758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:39,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51653186] [2022-12-12 13:05:39,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 13:05:39,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:39,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:39,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:39,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 13:05:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:39,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 13:05:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:40,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:05:40,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51653186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:40,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:40,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-12-12 13:05:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013769466] [2022-12-12 13:05:40,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:40,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 13:05:40,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 13:05:40,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-12-12 13:05:40,188 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2022-12-12 13:05:40,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 749 transitions, 6167 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:40,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:40,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2022-12-12 13:05:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:41,081 INFO L130 PetriNetUnfolder]: 1446/3376 cut-off events. [2022-12-12 13:05:41,082 INFO L131 PetriNetUnfolder]: For 5071/5168 co-relation queries the response was YES. [2022-12-12 13:05:41,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13544 conditions, 3376 events. 1446/3376 cut-off events. For 5071/5168 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25533 event pairs, 89 based on Foata normal form. 30/3186 useless extension candidates. Maximal degree in co-relation 11517. Up to 1011 conditions per place. [2022-12-12 13:05:41,103 INFO L137 encePairwiseOnDemand]: 91/107 looper letters, 276 selfloop transitions, 33 changer transitions 301/760 dead transitions. [2022-12-12 13:05:41,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 760 transitions, 7241 flow [2022-12-12 13:05:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 13:05:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 13:05:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1435 transitions. [2022-12-12 13:05:41,106 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.705853418593212 [2022-12-12 13:05:41,106 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 117 predicate places. [2022-12-12 13:05:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 760 transitions, 7241 flow [2022-12-12 13:05:41,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 760 transitions, 6944 flow, removed 136 selfloop flow, removed 10 redundant places. [2022-12-12 13:05:41,140 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 760 transitions, 6944 flow [2022-12-12 13:05:41,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:41,141 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:41,142 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:41,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:41,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1907407516, now seen corresponding path program 8 times [2022-12-12 13:05:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936857809] [2022-12-12 13:05:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 13:05:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936857809] [2022-12-12 13:05:41,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936857809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777528767] [2022-12-12 13:05:41,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:05:41,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:41,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:41,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 13:05:41,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:05:41,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:41,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 13:05:41,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:41,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:41,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777528767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:41,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:41,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2022-12-12 13:05:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110725789] [2022-12-12 13:05:41,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 13:05:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 13:05:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-12-12 13:05:41,845 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 107 [2022-12-12 13:05:41,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 760 transitions, 6944 flow. Second operand has 19 states, 19 states have (on average 71.15789473684211) internal successors, (1352), 19 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:41,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:41,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 107 [2022-12-12 13:05:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:43,522 INFO L130 PetriNetUnfolder]: 1709/3625 cut-off events. [2022-12-12 13:05:43,522 INFO L131 PetriNetUnfolder]: For 5655/5707 co-relation queries the response was YES. [2022-12-12 13:05:43,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17185 conditions, 3625 events. 1709/3625 cut-off events. For 5655/5707 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 25631 event pairs, 24 based on Foata normal form. 11/3502 useless extension candidates. Maximal degree in co-relation 2599. Up to 1283 conditions per place. [2022-12-12 13:05:43,548 INFO L137 encePairwiseOnDemand]: 89/107 looper letters, 383 selfloop transitions, 171 changer transitions 323/991 dead transitions. [2022-12-12 13:05:43,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 991 transitions, 11062 flow [2022-12-12 13:05:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 13:05:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 13:05:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3542 transitions. [2022-12-12 13:05:43,554 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6755674232309746 [2022-12-12 13:05:43,554 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 155 predicate places. [2022-12-12 13:05:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 991 transitions, 11062 flow [2022-12-12 13:05:43,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 991 transitions, 9252 flow, removed 862 selfloop flow, removed 10 redundant places. [2022-12-12 13:05:43,593 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 991 transitions, 9252 flow [2022-12-12 13:05:43,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 71.15789473684211) internal successors, (1352), 19 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:43,594 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:43,594 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:43,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 13:05:43,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -843869558, now seen corresponding path program 9 times [2022-12-12 13:05:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:43,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011245207] [2022-12-12 13:05:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 13:05:43,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:43,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011245207] [2022-12-12 13:05:43,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011245207] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:43,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300300422] [2022-12-12 13:05:43,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:05:43,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:43,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:43,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 13:05:44,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 13:05:44,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:44,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 13:05:44,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:44,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:44,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300300422] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:44,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:44,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2022-12-12 13:05:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599981442] [2022-12-12 13:05:44,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:44,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 13:05:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:44,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 13:05:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-12-12 13:05:44,308 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 107 [2022-12-12 13:05:44,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 991 transitions, 9252 flow. Second operand has 21 states, 21 states have (on average 70.57142857142857) internal successors, (1482), 21 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:44,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:44,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 107 [2022-12-12 13:05:44,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:45,858 INFO L130 PetriNetUnfolder]: 1764/3818 cut-off events. [2022-12-12 13:05:45,858 INFO L131 PetriNetUnfolder]: For 4940/5069 co-relation queries the response was YES. [2022-12-12 13:05:45,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17716 conditions, 3818 events. 1764/3818 cut-off events. For 4940/5069 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 27257 event pairs, 34 based on Foata normal form. 14/3785 useless extension candidates. Maximal degree in co-relation 3072. Up to 1035 conditions per place. [2022-12-12 13:05:45,884 INFO L137 encePairwiseOnDemand]: 86/107 looper letters, 461 selfloop transitions, 118 changer transitions 436/1115 dead transitions. [2022-12-12 13:05:45,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1115 transitions, 12251 flow [2022-12-12 13:05:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 13:05:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 13:05:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3300 transitions. [2022-12-12 13:05:45,890 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6704591629418936 [2022-12-12 13:05:45,890 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 190 predicate places. [2022-12-12 13:05:45,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1115 transitions, 12251 flow [2022-12-12 13:05:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1115 transitions, 11098 flow, removed 552 selfloop flow, removed 12 redundant places. [2022-12-12 13:05:45,925 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 1115 transitions, 11098 flow [2022-12-12 13:05:45,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 70.57142857142857) internal successors, (1482), 21 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:45,926 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:45,926 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:45,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:46,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 13:05:46,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1938320574, now seen corresponding path program 10 times [2022-12-12 13:05:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540393945] [2022-12-12 13:05:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540393945] [2022-12-12 13:05:47,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540393945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647952292] [2022-12-12 13:05:47,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 13:05:47,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:47,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:47,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 13:05:47,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 13:05:47,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:47,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-12 13:05:47,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:48,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:48,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:05:48,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 51 [2022-12-12 13:05:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:48,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647952292] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:48,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:48,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 14] total 50 [2022-12-12 13:05:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520193407] [2022-12-12 13:05:48,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:48,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-12 13:05:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-12 13:05:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2310, Unknown=0, NotChecked=0, Total=2450 [2022-12-12 13:05:48,849 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:05:48,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1115 transitions, 11098 flow. Second operand has 50 states, 50 states have (on average 41.12) internal successors, (2056), 50 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:48,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:48,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:05:48,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:05:55,665 INFO L130 PetriNetUnfolder]: 2642/5435 cut-off events. [2022-12-12 13:05:55,665 INFO L131 PetriNetUnfolder]: For 7000/7372 co-relation queries the response was YES. [2022-12-12 13:05:55,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27996 conditions, 5435 events. 2642/5435 cut-off events. For 7000/7372 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 40864 event pairs, 67 based on Foata normal form. 57/5480 useless extension candidates. Maximal degree in co-relation 9551. Up to 2834 conditions per place. [2022-12-12 13:05:55,700 INFO L137 encePairwiseOnDemand]: 74/107 looper letters, 875 selfloop transitions, 201 changer transitions 618/1723 dead transitions. [2022-12-12 13:05:55,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1723 transitions, 19964 flow [2022-12-12 13:05:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-12-12 13:05:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2022-12-12 13:05:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 4532 transitions. [2022-12-12 13:05:55,708 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40338228749443705 [2022-12-12 13:05:55,709 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 282 predicate places. [2022-12-12 13:05:55,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1723 transitions, 19964 flow [2022-12-12 13:05:55,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1723 transitions, 18351 flow, removed 774 selfloop flow, removed 20 redundant places. [2022-12-12 13:05:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 1723 transitions, 18351 flow [2022-12-12 13:05:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 41.12) internal successors, (2056), 50 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:55,783 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:05:55,784 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:05:55,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 13:05:55,990 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:05:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:05:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash -842454684, now seen corresponding path program 11 times [2022-12-12 13:05:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:05:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858638134] [2022-12-12 13:05:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:05:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:05:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:05:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:05:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:05:57,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858638134] [2022-12-12 13:05:57,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858638134] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:05:57,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580700808] [2022-12-12 13:05:57,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 13:05:57,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:57,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:05:57,296 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:05:57,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 13:05:57,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 13:05:57,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:05:57,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-12 13:05:57,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:05:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:05:57,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:05:58,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:05:58,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 51 [2022-12-12 13:05:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:05:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580700808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:05:58,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:05:58,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 14] total 51 [2022-12-12 13:05:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483059830] [2022-12-12 13:05:58,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:05:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-12 13:05:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:05:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-12 13:05:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2373, Unknown=0, NotChecked=0, Total=2550 [2022-12-12 13:05:58,358 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:05:58,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 1723 transitions, 18351 flow. Second operand has 51 states, 51 states have (on average 41.09803921568628) internal successors, (2096), 51 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:05:58,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:05:58,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:05:58,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:06:02,274 INFO L130 PetriNetUnfolder]: 2913/6012 cut-off events. [2022-12-12 13:06:02,275 INFO L131 PetriNetUnfolder]: For 8282/8726 co-relation queries the response was YES. [2022-12-12 13:06:02,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34285 conditions, 6012 events. 2913/6012 cut-off events. For 8282/8726 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 46006 event pairs, 44 based on Foata normal form. 48/6047 useless extension candidates. Maximal degree in co-relation 18995. Up to 3715 conditions per place. [2022-12-12 13:06:02,310 INFO L137 encePairwiseOnDemand]: 75/107 looper letters, 1064 selfloop transitions, 166 changer transitions 644/1903 dead transitions. [2022-12-12 13:06:02,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1903 transitions, 24232 flow [2022-12-12 13:06:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-12 13:06:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-12-12 13:06:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 3178 transitions. [2022-12-12 13:06:02,315 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40136398080323316 [2022-12-12 13:06:02,315 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 335 predicate places. [2022-12-12 13:06:02,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1903 transitions, 24232 flow [2022-12-12 13:06:02,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1903 transitions, 22121 flow, removed 916 selfloop flow, removed 54 redundant places. [2022-12-12 13:06:02,403 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 1903 transitions, 22121 flow [2022-12-12 13:06:02,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 41.09803921568628) internal successors, (2096), 51 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:02,404 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:06:02,404 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:06:02,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 13:06:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 13:06:02,610 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:06:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:06:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 385556292, now seen corresponding path program 12 times [2022-12-12 13:06:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:06:02,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940171520] [2022-12-12 13:06:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:06:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:06:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:06:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:06:04,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:06:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940171520] [2022-12-12 13:06:04,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940171520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:06:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788552179] [2022-12-12 13:06:04,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 13:06:04,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:06:04,417 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:06:04,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 13:06:04,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-12 13:06:04,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:06:04,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-12 13:06:04,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:06:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:06:05,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:06:05,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:06:05,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 51 [2022-12-12 13:06:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:06:05,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788552179] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:06:05,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:06:05,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16, 14] total 51 [2022-12-12 13:06:05,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005123358] [2022-12-12 13:06:05,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:06:05,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-12 13:06:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:06:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-12 13:06:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-12-12 13:06:05,447 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 107 [2022-12-12 13:06:05,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1903 transitions, 22121 flow. Second operand has 51 states, 51 states have (on average 33.90196078431372) internal successors, (1729), 51 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:05,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:06:05,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 107 [2022-12-12 13:06:05,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:06:15,545 INFO L130 PetriNetUnfolder]: 3451/7103 cut-off events. [2022-12-12 13:06:15,545 INFO L131 PetriNetUnfolder]: For 10616/11106 co-relation queries the response was YES. [2022-12-12 13:06:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44160 conditions, 7103 events. 3451/7103 cut-off events. For 10616/11106 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 56399 event pairs, 41 based on Foata normal form. 72/7163 useless extension candidates. Maximal degree in co-relation 23317. Up to 4138 conditions per place. [2022-12-12 13:06:15,591 INFO L137 encePairwiseOnDemand]: 71/107 looper letters, 1310 selfloop transitions, 189 changer transitions 786/2311 dead transitions. [2022-12-12 13:06:15,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 2311 transitions, 31565 flow [2022-12-12 13:06:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-12 13:06:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2022-12-12 13:06:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 3823 transitions. [2022-12-12 13:06:15,597 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3370657732322342 [2022-12-12 13:06:15,597 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 386 predicate places. [2022-12-12 13:06:15,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 2311 transitions, 31565 flow [2022-12-12 13:06:15,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 2311 transitions, 28207 flow, removed 1533 selfloop flow, removed 51 redundant places. [2022-12-12 13:06:15,717 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 2311 transitions, 28207 flow [2022-12-12 13:06:15,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 33.90196078431372) internal successors, (1729), 51 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:15,718 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:06:15,718 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:06:15,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 13:06:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:15,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:06:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:06:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1615324376, now seen corresponding path program 13 times [2022-12-12 13:06:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:06:15,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989179117] [2022-12-12 13:06:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:06:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:06:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:06:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:06:16,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:06:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989179117] [2022-12-12 13:06:16,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989179117] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:06:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990337727] [2022-12-12 13:06:16,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 13:06:16,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:06:16,988 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:06:17,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 13:06:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:06:17,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-12 13:06:17,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:06:17,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 13:06:17,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:06:17,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-12-12 13:06:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:06:17,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:06:17,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:06:17,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 51 [2022-12-12 13:06:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:06:18,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990337727] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:06:18,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:06:18,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 14] total 48 [2022-12-12 13:06:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116536343] [2022-12-12 13:06:18,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:06:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-12 13:06:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:06:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-12 13:06:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2084, Unknown=0, NotChecked=0, Total=2256 [2022-12-12 13:06:18,034 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:06:18,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 2311 transitions, 28207 flow. Second operand has 48 states, 48 states have (on average 41.1875) internal successors, (1977), 48 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:18,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:06:18,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:06:18,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:06:23,286 INFO L130 PetriNetUnfolder]: 3958/8156 cut-off events. [2022-12-12 13:06:23,287 INFO L131 PetriNetUnfolder]: For 14061/14601 co-relation queries the response was YES. [2022-12-12 13:06:23,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53899 conditions, 8156 events. 3958/8156 cut-off events. For 14061/14601 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 66475 event pairs, 58 based on Foata normal form. 68/8214 useless extension candidates. Maximal degree in co-relation 28745. Up to 4697 conditions per place. [2022-12-12 13:06:23,340 INFO L137 encePairwiseOnDemand]: 73/107 looper letters, 1474 selfloop transitions, 255 changer transitions 894/2652 dead transitions. [2022-12-12 13:06:23,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 2652 transitions, 38485 flow [2022-12-12 13:06:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-12-12 13:06:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-12-12 13:06:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 3748 transitions. [2022-12-12 13:06:23,345 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4026211193468686 [2022-12-12 13:06:23,346 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 421 predicate places. [2022-12-12 13:06:23,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 2652 transitions, 38485 flow [2022-12-12 13:06:23,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 2652 transitions, 35215 flow, removed 1546 selfloop flow, removed 50 redundant places. [2022-12-12 13:06:23,453 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 2652 transitions, 35215 flow [2022-12-12 13:06:23,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 41.1875) internal successors, (1977), 48 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:23,454 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:06:23,454 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:06:23,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-12 13:06:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-12 13:06:23,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:06:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:06:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1482350364, now seen corresponding path program 14 times [2022-12-12 13:06:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:06:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738439154] [2022-12-12 13:06:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:06:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:06:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:06:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:06:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:06:24,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738439154] [2022-12-12 13:06:24,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738439154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:06:24,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66242416] [2022-12-12 13:06:24,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:06:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:06:24,889 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:06:24,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 13:06:24,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:06:24,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:06:24,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-12 13:06:24,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:06:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:06:25,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:06:25,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:06:25,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 51 [2022-12-12 13:06:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:06:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66242416] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:06:25,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:06:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 14] total 47 [2022-12-12 13:06:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649613237] [2022-12-12 13:06:25,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:06:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 13:06:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:06:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 13:06:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 13:06:25,807 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:06:25,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 2652 transitions, 35215 flow. Second operand has 47 states, 47 states have (on average 41.234042553191486) internal successors, (1938), 47 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:25,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:06:25,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:06:25,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:06:30,897 INFO L130 PetriNetUnfolder]: 4263/8739 cut-off events. [2022-12-12 13:06:30,898 INFO L131 PetriNetUnfolder]: For 16965/17642 co-relation queries the response was YES. [2022-12-12 13:06:30,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62149 conditions, 8739 events. 4263/8739 cut-off events. For 16965/17642 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 72077 event pairs, 78 based on Foata normal form. 57/8785 useless extension candidates. Maximal degree in co-relation 33650. Up to 5444 conditions per place. [2022-12-12 13:06:30,947 INFO L137 encePairwiseOnDemand]: 74/107 looper letters, 1638 selfloop transitions, 258 changer transitions 959/2884 dead transitions. [2022-12-12 13:06:30,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 2884 transitions, 44635 flow [2022-12-12 13:06:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-12 13:06:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-12-12 13:06:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 3278 transitions. [2022-12-12 13:06:30,951 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40309886866699457 [2022-12-12 13:06:30,951 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 446 predicate places. [2022-12-12 13:06:30,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 2884 transitions, 44635 flow [2022-12-12 13:06:31,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 2884 transitions, 41366 flow, removed 1482 selfloop flow, removed 52 redundant places. [2022-12-12 13:06:31,105 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 2884 transitions, 41366 flow [2022-12-12 13:06:31,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 41.234042553191486) internal successors, (1938), 47 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:31,106 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:06:31,107 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:06:31,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 13:06:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:31,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:06:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:06:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1358057158, now seen corresponding path program 15 times [2022-12-12 13:06:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:06:31,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373882506] [2022-12-12 13:06:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:06:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:06:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:06:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:06:32,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:06:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373882506] [2022-12-12 13:06:32,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373882506] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:06:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834431821] [2022-12-12 13:06:32,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:06:32,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:06:32,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:06:32,480 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:06:32,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 13:06:32,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 13:06:32,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:06:32,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-12 13:06:32,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:06:33,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:06:33,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-12-12 13:06:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:06:33,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:06:36,149 INFO L321 Elim1Store]: treesize reduction 12, result has 79.7 percent of original size [2022-12-12 13:06:36,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 55 [2022-12-12 13:06:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:06:36,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834431821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:06:36,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:06:36,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 18] total 60 [2022-12-12 13:06:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058425749] [2022-12-12 13:06:36,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:06:36,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-12 13:06:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:06:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-12 13:06:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=3215, Unknown=1, NotChecked=0, Total=3540 [2022-12-12 13:06:36,311 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 107 [2022-12-12 13:06:36,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 2884 transitions, 41366 flow. Second operand has 60 states, 60 states have (on average 41.0) internal successors, (2460), 60 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:06:36,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:06:36,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 107 [2022-12-12 13:06:36,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:06:42,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:06:46,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:06:48,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:06:52,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:06:55,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:06:58,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:00,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:02,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:06,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:09,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:11,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:13,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:20,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:22,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:26,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:28,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:32,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:34,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:38,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:40,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:42,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:44,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:07:49,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:53,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:07:56,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:00,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:02,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:06,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:08,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:10,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:29,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:31,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:33,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:35,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:41,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:43,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:08:45,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:09:02,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:09:24,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:09:26,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:09:47,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:10:00,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:10:08,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:10:10,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:10:16,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:10:46,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:11:07,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:11:19,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:11:21,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:11:29,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:11:31,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:11:33,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:12:00,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:12:45,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:12:57,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:12:59,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:13:10,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:13:12,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:13:20,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:13:22,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 13:13:24,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:13:35,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:13:43,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:13:45,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:14:03,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:14:10,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:14:19,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:14:35,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:02,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:05,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:13,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:24,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:36,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:38,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:15:57,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:16:30,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:16:32,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:16:43,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:16:53,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:18:39,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:18:47,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2022-12-12 13:19:24,466 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 13:19:24,466 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 13:19:24,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:19:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-12-12 13:19:24,822 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 13:19:24,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 13:19:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:19:25,028 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (60states, 38/107 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 83026 conditions, 10622 events (5292/10621 cut-off events. For 24111/24879 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 95079 event pairs, 62 based on Foata normal form. 71/11059 useless extension candidates. Maximal degree in co-relation 51829. Up to 5448 conditions per place.). [2022-12-12 13:19:25,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 13:19:25,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 13:19:25,030 INFO L445 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1, 1, 1] [2022-12-12 13:19:25,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 13:19:25,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 13:19:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:19:25 BasicIcfg [2022-12-12 13:19:25,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 13:19:25,038 INFO L158 Benchmark]: Toolchain (without parser) took 847967.25ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 151.4MB in the beginning and 509.9MB in the end (delta: -358.5MB). Peak memory consumption was 598.8MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,039 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 13:19:25,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.64ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 139.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.71ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 137.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,040 INFO L158 Benchmark]: Boogie Preprocessor took 44.28ms. Allocated memory is still 188.7MB. Free memory was 137.4MB in the beginning and 135.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,040 INFO L158 Benchmark]: RCFGBuilder took 616.59ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 150.0MB in the end (delta: -14.1MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,040 INFO L158 Benchmark]: TraceAbstraction took 846950.11ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 148.4MB in the beginning and 509.9MB in the end (delta: -361.5MB). Peak memory consumption was 594.8MB. Max. memory is 8.0GB. [2022-12-12 13:19:25,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.64ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 139.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.71ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 137.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.28ms. Allocated memory is still 188.7MB. Free memory was 137.4MB in the beginning and 135.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 616.59ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 150.0MB in the end (delta: -14.1MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * TraceAbstraction took 846950.11ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 148.4MB in the beginning and 509.9MB in the end (delta: -361.5MB). Peak memory consumption was 594.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (60states, 38/107 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 83026 conditions, 10622 events (5292/10621 cut-off events. For 24111/24879 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 95079 event pairs, 62 based on Foata normal form. 71/11059 useless extension candidates. Maximal degree in co-relation 51829. Up to 5448 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (60states, 38/107 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 83026 conditions, 10622 events (5292/10621 cut-off events. For 24111/24879 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 95079 event pairs, 62 based on Foata normal form. 71/11059 useless extension candidates. Maximal degree in co-relation 51829. Up to 5448 conditions per place.). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (60states, 38/107 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 83026 conditions, 10622 events (5292/10621 cut-off events. For 24111/24879 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 95079 event pairs, 62 based on Foata normal form. 71/11059 useless extension candidates. Maximal degree in co-relation 51829. Up to 5448 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.8s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 846.8s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 813.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 80 mSolverCounterUnknown, 10439 SdHoareTripleChecker+Valid, 181.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10439 mSDsluCounter, 13757 SdHoareTripleChecker+Invalid, 179.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12979 mSDsCounter, 442 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33218 IncrementalHoareTripleChecker+Invalid, 33740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 442 mSolverCounterUnsat, 778 mSDtfsCounter, 33218 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4418 GetRequests, 2971 SyntacticMatches, 54 SemanticMatches, 1393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56598 ImplicationChecksByTransitivity, 626.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41366occurred in iteration=19, InterpolantAutomatonStates: 789, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 21039 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 3467 NumberOfCodeBlocks, 3467 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 5035 ConstructedInterpolants, 39 QuantifiedInterpolants, 31648 SizeOfPredicates, 418 NumberOfNonLiveVariables, 4667 ConjunctsInSsa, 809 ConjunctsInUnsatCore, 54 InterpolantComputations, 5 PerfectInterpolantSequences, 209/629 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown