/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:04:46,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:04:46,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:04:46,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:04:46,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:04:46,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:04:46,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:04:46,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:04:46,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:04:46,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:04:46,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:04:46,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:04:46,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:04:46,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:04:46,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:04:46,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:04:46,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:04:46,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:04:46,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:04:46,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:04:46,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:04:46,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:04:46,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:04:46,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:04:46,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 22:04:46,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 22:04:46,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 22:04:46,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 22:04:46,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 22:04:46,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 22:04:46,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 22:04:46,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 22:04:46,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 22:04:46,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 22:04:46,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 22:04:46,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 22:04:46,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 22:04:46,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 22:04:46,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:04:46,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:04:46,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:04:46,709 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-SemanticLbe.epf [2022-12-05 22:04:46,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:04:46,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:04:46,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 22:04:46,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 22:04:46,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:04:46,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:04:46,738 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:04:46,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:04:46,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:04:46,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:04:46,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:04:46,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:04:46,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:04:46,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:04:46,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:04:46,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:04:46,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 22:04:46,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:04:47,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:04:47,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:04:47,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:04:47,069 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:04:47,070 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:04:47,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-12-05 22:04:48,024 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:04:48,208 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:04:48,208 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-12-05 22:04:48,213 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08eb762ed/01340e59386c4bf7ac126d6b98aa028c/FLAGe4b41679d [2022-12-05 22:04:48,223 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08eb762ed/01340e59386c4bf7ac126d6b98aa028c [2022-12-05 22:04:48,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:04:48,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:04:48,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:04:48,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:04:48,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:04:48,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304b534f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48, skipping insertion in model container [2022-12-05 22:04:48,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:04:48,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:04:48,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,373 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-prod-cons3.wvr.c[4007,4020] [2022-12-05 22:04:48,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:04:48,390 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:04:48,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:04:48,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:04:48,434 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-prod-cons3.wvr.c[4007,4020] [2022-12-05 22:04:48,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:04:48,449 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:04:48,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48 WrapperNode [2022-12-05 22:04:48,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:04:48,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:04:48,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:04:48,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:04:48,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,490 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-12-05 22:04:48,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:04:48,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:04:48,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:04:48,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:04:48,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:04:48,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:04:48,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:04:48,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:04:48,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (1/1) ... [2022-12-05 22:04:48,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:04:48,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:04:48,569 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) [2022-12-05 22:04:48,584 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 [2022-12-05 22:04:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:04:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:04:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:04:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:04:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:04:48,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:04:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:04:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:04:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 22:04:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 22:04:48,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 22:04:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:04:48,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:04:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:04:48,613 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:04:48,684 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:04:48,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:04:49,018 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:04:49,097 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:04:49,098 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-05 22:04:49,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:04:49 BoogieIcfgContainer [2022-12-05 22:04:49,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:04:49,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:04:49,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:04:49,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:04:49,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:04:48" (1/3) ... [2022-12-05 22:04:49,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5864f2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:04:49, skipping insertion in model container [2022-12-05 22:04:49,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:04:48" (2/3) ... [2022-12-05 22:04:49,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5864f2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:04:49, skipping insertion in model container [2022-12-05 22:04:49,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:04:49" (3/3) ... [2022-12-05 22:04:49,105 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-12-05 22:04:49,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:04:49,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:04:49,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:04:49,163 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 22:04:49,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 220 transitions, 472 flow [2022-12-05 22:04:49,285 INFO L130 PetriNetUnfolder]: 18/216 cut-off events. [2022-12-05 22:04:49,285 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:04:49,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 216 events. 18/216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2022-12-05 22:04:49,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 220 transitions, 472 flow [2022-12-05 22:04:49,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 204 transitions, 432 flow [2022-12-05 22:04:49,300 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:04:49,324 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 204 transitions, 432 flow [2022-12-05 22:04:49,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 204 transitions, 432 flow [2022-12-05 22:04:49,390 INFO L130 PetriNetUnfolder]: 18/204 cut-off events. [2022-12-05 22:04:49,390 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:04:49,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 204 events. 18/204 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2022-12-05 22:04:49,394 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 204 transitions, 432 flow [2022-12-05 22:04:49,394 INFO L188 LiptonReduction]: Number of co-enabled transitions 2284 [2022-12-05 22:04:56,902 INFO L203 LiptonReduction]: Total number of compositions: 168 [2022-12-05 22:04:56,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:04:56,923 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;@3e5d590d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:04:56,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 22:04:56,928 INFO L130 PetriNetUnfolder]: 5/35 cut-off events. [2022-12-05 22:04:56,928 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:04:56,928 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:56,929 INFO L213 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] [2022-12-05 22:04:56,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1148675820, now seen corresponding path program 1 times [2022-12-05 22:04:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:56,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258306398] [2022-12-05 22:04:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:04:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258306398] [2022-12-05 22:04:57,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258306398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:57,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:57,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:04:57,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117025371] [2022-12-05 22:04:57,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:57,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:04:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:04:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:04:57,338 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-05 22:04:57,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:57,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:57,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-05 22:04:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:57,626 INFO L130 PetriNetUnfolder]: 1835/2622 cut-off events. [2022-12-05 22:04:57,627 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-12-05 22:04:57,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2622 events. 1835/2622 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11882 event pairs, 180 based on Foata normal form. 0/2182 useless extension candidates. Maximal degree in co-relation 4539. Up to 845 conditions per place. [2022-12-05 22:04:57,642 INFO L137 encePairwiseOnDemand]: 31/36 looper letters, 76 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2022-12-05 22:04:57,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 373 flow [2022-12-05 22:04:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:04:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:04:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-05 22:04:57,650 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-12-05 22:04:57,651 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 96 flow. Second operand 5 states and 93 transitions. [2022-12-05 22:04:57,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 373 flow [2022-12-05 22:04:57,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 83 transitions, 340 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-05 22:04:57,657 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2022-12-05 22:04:57,658 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2022-12-05 22:04:57,660 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2022-12-05 22:04:57,660 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2022-12-05 22:04:57,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:57,660 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:57,660 INFO L213 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] [2022-12-05 22:04:57,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:04:57,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -400163974, now seen corresponding path program 2 times [2022-12-05 22:04:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:57,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548054836] [2022-12-05 22:04:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:04:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548054836] [2022-12-05 22:04:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548054836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:57,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:57,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:04:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409023712] [2022-12-05 22:04:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:57,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:04:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:04:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:04:57,783 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-05 22:04:57,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:57,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:57,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-05 22:04:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:58,029 INFO L130 PetriNetUnfolder]: 2087/2900 cut-off events. [2022-12-05 22:04:58,029 INFO L131 PetriNetUnfolder]: For 929/929 co-relation queries the response was YES. [2022-12-05 22:04:58,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 2900 events. 2087/2900 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12898 event pairs, 198 based on Foata normal form. 0/2526 useless extension candidates. Maximal degree in co-relation 3849. Up to 1199 conditions per place. [2022-12-05 22:04:58,041 INFO L137 encePairwiseOnDemand]: 31/36 looper letters, 71 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2022-12-05 22:04:58,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 375 flow [2022-12-05 22:04:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:04:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:04:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2022-12-05 22:04:58,044 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2022-12-05 22:04:58,044 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 5 states and 86 transitions. [2022-12-05 22:04:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 375 flow [2022-12-05 22:04:58,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:04:58,048 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 149 flow [2022-12-05 22:04:58,048 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2022-12-05 22:04:58,049 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2022-12-05 22:04:58,049 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 149 flow [2022-12-05 22:04:58,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:58,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:58,049 INFO L213 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] [2022-12-05 22:04:58,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 22:04:58,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1611974484, now seen corresponding path program 3 times [2022-12-05 22:04:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:58,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478406236] [2022-12-05 22:04:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:04:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:58,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478406236] [2022-12-05 22:04:58,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478406236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:58,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:58,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:04:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684148876] [2022-12-05 22:04:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:58,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 22:04:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 22:04:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 22:04:58,339 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-05 22:04:58,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:58,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:58,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-05 22:04:58,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:58,862 INFO L130 PetriNetUnfolder]: 4571/6362 cut-off events. [2022-12-05 22:04:58,862 INFO L131 PetriNetUnfolder]: For 3315/3315 co-relation queries the response was YES. [2022-12-05 22:04:58,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15630 conditions, 6362 events. 4571/6362 cut-off events. For 3315/3315 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 29294 event pairs, 339 based on Foata normal form. 164/6162 useless extension candidates. Maximal degree in co-relation 8501. Up to 2132 conditions per place. [2022-12-05 22:04:58,881 INFO L137 encePairwiseOnDemand]: 29/36 looper letters, 91 selfloop transitions, 7 changer transitions 21/119 dead transitions. [2022-12-05 22:04:58,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 119 transitions, 618 flow [2022-12-05 22:04:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:04:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:04:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2022-12-05 22:04:58,882 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-05 22:04:58,883 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 149 flow. Second operand 7 states and 108 transitions. [2022-12-05 22:04:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 119 transitions, 618 flow [2022-12-05 22:04:58,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:04:58,890 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 156 flow [2022-12-05 22:04:58,890 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-12-05 22:04:58,890 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2022-12-05 22:04:58,890 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 156 flow [2022-12-05 22:04:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:58,891 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:58,891 INFO L213 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] [2022-12-05 22:04:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 22:04:58,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1688448179, now seen corresponding path program 1 times [2022-12-05 22:04:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254606162] [2022-12-05 22:04:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:04:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:59,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254606162] [2022-12-05 22:04:59,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254606162] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:59,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:59,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 22:04:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679443260] [2022-12-05 22:04:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:04:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:04:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:04:59,004 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2022-12-05 22:04:59,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:59,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2022-12-05 22:04:59,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:59,202 INFO L130 PetriNetUnfolder]: 1581/2444 cut-off events. [2022-12-05 22:04:59,203 INFO L131 PetriNetUnfolder]: For 3042/3042 co-relation queries the response was YES. [2022-12-05 22:04:59,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 2444 events. 1581/2444 cut-off events. For 3042/3042 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11634 event pairs, 426 based on Foata normal form. 54/2211 useless extension candidates. Maximal degree in co-relation 2584. Up to 1681 conditions per place. [2022-12-05 22:04:59,214 INFO L137 encePairwiseOnDemand]: 33/36 looper letters, 43 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-05 22:04:59,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 268 flow [2022-12-05 22:04:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:04:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:04:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-12-05 22:04:59,215 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2022-12-05 22:04:59,215 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 156 flow. Second operand 3 states and 58 transitions. [2022-12-05 22:04:59,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 268 flow [2022-12-05 22:04:59,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 240 flow, removed 1 selfloop flow, removed 11 redundant places. [2022-12-05 22:04:59,219 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 130 flow [2022-12-05 22:04:59,219 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2022-12-05 22:04:59,220 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2022-12-05 22:04:59,220 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 130 flow [2022-12-05 22:04:59,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,220 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:59,220 INFO L213 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] [2022-12-05 22:04:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 22:04:59,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash -117923259, now seen corresponding path program 1 times [2022-12-05 22:04:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:59,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172400354] [2022-12-05 22:04:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:59,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 22:04:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:59,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172400354] [2022-12-05 22:04:59,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172400354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:59,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:59,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 22:04:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815526440] [2022-12-05 22:04:59,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:59,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:04:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:04:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:04:59,329 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2022-12-05 22:04:59,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:59,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2022-12-05 22:04:59,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:59,554 INFO L130 PetriNetUnfolder]: 1844/2797 cut-off events. [2022-12-05 22:04:59,554 INFO L131 PetriNetUnfolder]: For 1839/1839 co-relation queries the response was YES. [2022-12-05 22:04:59,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7000 conditions, 2797 events. 1844/2797 cut-off events. For 1839/1839 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13330 event pairs, 1272 based on Foata normal form. 44/2453 useless extension candidates. Maximal degree in co-relation 3229. Up to 2102 conditions per place. [2022-12-05 22:04:59,566 INFO L137 encePairwiseOnDemand]: 32/36 looper letters, 32 selfloop transitions, 2 changer transitions 17/58 dead transitions. [2022-12-05 22:04:59,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 277 flow [2022-12-05 22:04:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:04:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:04:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-05 22:04:59,568 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2022-12-05 22:04:59,568 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 130 flow. Second operand 4 states and 67 transitions. [2022-12-05 22:04:59,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 277 flow [2022-12-05 22:04:59,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:04:59,571 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 142 flow [2022-12-05 22:04:59,571 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-12-05 22:04:59,571 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2022-12-05 22:04:59,571 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 142 flow [2022-12-05 22:04:59,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,572 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:59,572 INFO L213 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] [2022-12-05 22:04:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 22:04:59,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash 927566394, now seen corresponding path program 1 times [2022-12-05 22:04:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624517543] [2022-12-05 22:04:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 22:04:59,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624517543] [2022-12-05 22:04:59,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624517543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:59,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:59,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 22:04:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555969351] [2022-12-05 22:04:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:59,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:04:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:04:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:04:59,696 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2022-12-05 22:04:59,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:59,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2022-12-05 22:04:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:04:59,866 INFO L130 PetriNetUnfolder]: 1239/1962 cut-off events. [2022-12-05 22:04:59,866 INFO L131 PetriNetUnfolder]: For 1427/1427 co-relation queries the response was YES. [2022-12-05 22:04:59,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5020 conditions, 1962 events. 1239/1962 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8853 event pairs, 557 based on Foata normal form. 34/1792 useless extension candidates. Maximal degree in co-relation 4997. Up to 1567 conditions per place. [2022-12-05 22:04:59,877 INFO L137 encePairwiseOnDemand]: 33/36 looper letters, 43 selfloop transitions, 2 changer transitions 3/55 dead transitions. [2022-12-05 22:04:59,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 274 flow [2022-12-05 22:04:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:04:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:04:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-05 22:04:59,878 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2022-12-05 22:04:59,878 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 142 flow. Second operand 3 states and 59 transitions. [2022-12-05 22:04:59,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 274 flow [2022-12-05 22:04:59,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 268 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 22:04:59,882 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 148 flow [2022-12-05 22:04:59,882 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-12-05 22:04:59,883 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2022-12-05 22:04:59,883 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 148 flow [2022-12-05 22:04:59,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,883 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:04:59,883 INFO L213 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] [2022-12-05 22:04:59,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 22:04:59,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:04:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:04:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1781363293, now seen corresponding path program 1 times [2022-12-05 22:04:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:04:59,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439783433] [2022-12-05 22:04:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:04:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:04:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:04:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 22:04:59,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:04:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439783433] [2022-12-05 22:04:59,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439783433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:04:59,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:04:59,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:04:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797243388] [2022-12-05 22:04:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:04:59,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:04:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:04:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:04:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:04:59,986 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2022-12-05 22:04:59,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:04:59,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:04:59,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2022-12-05 22:04:59,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:05:00,166 INFO L130 PetriNetUnfolder]: 1349/2183 cut-off events. [2022-12-05 22:05:00,166 INFO L131 PetriNetUnfolder]: For 1767/1767 co-relation queries the response was YES. [2022-12-05 22:05:00,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5831 conditions, 2183 events. 1349/2183 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9988 event pairs, 1008 based on Foata normal form. 22/2006 useless extension candidates. Maximal degree in co-relation 5401. Up to 1742 conditions per place. [2022-12-05 22:05:00,177 INFO L137 encePairwiseOnDemand]: 32/36 looper letters, 34 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2022-12-05 22:05:00,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 309 flow [2022-12-05 22:05:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:05:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:05:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-05 22:05:00,178 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2022-12-05 22:05:00,178 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 148 flow. Second operand 4 states and 67 transitions. [2022-12-05 22:05:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 309 flow [2022-12-05 22:05:00,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:05:00,181 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 160 flow [2022-12-05 22:05:00,181 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2022-12-05 22:05:00,181 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2022-12-05 22:05:00,181 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 160 flow [2022-12-05 22:05:00,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:05:00,182 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:05:00,182 INFO L213 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] [2022-12-05 22:05:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 22:05:00,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:05:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:05:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2001273075, now seen corresponding path program 1 times [2022-12-05 22:05:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:05:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014503002] [2022-12-05 22:05:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:05:00,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:05:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:05:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:05:01,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:05:01,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014503002] [2022-12-05 22:05:01,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014503002] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:05:01,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041010078] [2022-12-05 22:05:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:05:01,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:05:01,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:05:01,789 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) [2022-12-05 22:05:01,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 22:05:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:05:01,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-05 22:05:01,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:05:01,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:01,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:01,998 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-05 22:05:01,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-12-05 22:05:02,111 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 15 treesize of output 11 [2022-12-05 22:05:02,190 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 22:05:02,190 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 [2022-12-05 22:05:02,261 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 [2022-12-05 22:05:02,331 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 [2022-12-05 22:05:02,520 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 [2022-12-05 22:05:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:02,665 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 18 treesize of output 20 [2022-12-05 22:05:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 22:05:02,756 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 18 treesize of output 20 [2022-12-05 22:05:03,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:03,004 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 40 treesize of output 30 [2022-12-05 22:05:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:05:03,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:05:04,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:04,427 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 110 [2022-12-05 22:05:04,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:04,534 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 1713966 treesize of output 1685342 [2022-12-05 22:05:08,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:08,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1684655 treesize of output 1664223 [2022-12-05 22:05:11,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:11,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1664738 treesize of output 1623794 [2022-12-05 22:05:14,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:14,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1623180 treesize of output 1295412 [2022-12-05 22:05:18,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:18,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1295372 treesize of output 1131508 [2022-12-05 22:05:21,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:05:21,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1132002 treesize of output 1050034 [2022-12-05 22:14:27,458 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-05 22:14:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:14:27,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041010078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:14:27,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:14:27,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 48 [2022-12-05 22:14:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905509753] [2022-12-05 22:14:27,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:14:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-05 22:14:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:14:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-05 22:14:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2132, Unknown=11, NotChecked=0, Total=2352 [2022-12-05 22:14:27,721 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-05 22:14:27,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 160 flow. Second operand has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:14:27,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:14:27,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-05 22:14:27,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:14:47,961 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] [2022-12-05 22:14:57,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:09,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:11,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:17,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:24,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:28,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:30,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:48,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:15:51,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:24,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:26,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:29,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:31,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:33,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:52,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:54,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:56,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:16:58,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:17:15,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:17:17,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:17:41,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:17:43,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 22:17:45,161 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] [2022-12-05 22:18:05,422 INFO L130 PetriNetUnfolder]: 22626/32439 cut-off events. [2022-12-05 22:18:05,422 INFO L131 PetriNetUnfolder]: For 24499/24499 co-relation queries the response was YES. [2022-12-05 22:18:05,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90518 conditions, 32439 events. 22626/32439 cut-off events. For 24499/24499 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 194455 event pairs, 301 based on Foata normal form. 724/31152 useless extension candidates. Maximal degree in co-relation 90496. Up to 5975 conditions per place. [2022-12-05 22:18:05,562 INFO L137 encePairwiseOnDemand]: 6/36 looper letters, 1755 selfloop transitions, 1180 changer transitions 45/2980 dead transitions. [2022-12-05 22:18:05,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 2980 transitions, 15185 flow [2022-12-05 22:18:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2022-12-05 22:18:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2022-12-05 22:18:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 2945 transitions. [2022-12-05 22:18:05,581 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25484596746278987 [2022-12-05 22:18:05,581 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 160 flow. Second operand 321 states and 2945 transitions. [2022-12-05 22:18:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 2980 transitions, 15185 flow [2022-12-05 22:18:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 2980 transitions, 15159 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-05 22:18:05,657 INFO L231 Difference]: Finished difference. Result has 477 places, 1411 transitions, 8945 flow [2022-12-05 22:18:05,658 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=321, PETRI_FLOW=8945, PETRI_PLACES=477, PETRI_TRANSITIONS=1411} [2022-12-05 22:18:05,660 INFO L294 CegarLoopForPetriNet]: 44 programPoint places, 433 predicate places. [2022-12-05 22:18:05,660 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1411 transitions, 8945 flow [2022-12-05 22:18:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:05,660 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:18:05,660 INFO L213 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] [2022-12-05 22:18:05,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 22:18:05,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:18:05,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:18:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:18:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash -603660523, now seen corresponding path program 2 times [2022-12-05 22:18:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:18:05,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149641778] [2022-12-05 22:18:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:18:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:18:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:18:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:18:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:18:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149641778] [2022-12-05 22:18:07,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149641778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:18:07,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051145284] [2022-12-05 22:18:07,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:18:07,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:18:07,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:18:07,822 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) [2022-12-05 22:18:07,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 22:18:08,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:18:08,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:18:08,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-05 22:18:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:18:08,129 INFO L321 Elim1Store]: treesize reduction 134, result has 27.6 percent of original size [2022-12-05 22:18:08,129 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 4 case distinctions, treesize of input 18 treesize of output 56 [2022-12-05 22:18:08,313 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 22:18:08,313 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 [2022-12-05 22:18:09,130 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-05 22:18:09,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 42 [2022-12-05 22:18:09,145 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 25 treesize of output 17 [2022-12-05 22:18:09,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 22:18:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:18:09,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:18:09,570 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_368) c_~queue2~0.base) (+ c_~queue2~0.offset (* c_~front2~0 4))) c_~d2~0) (+ (* c_~W~0 2) 1))) is different from false [2022-12-05 22:18:09,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 22:18:09,742 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 76 treesize of output 144 [2022-12-05 22:18:10,019 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 15 treesize of output 9 [2022-12-05 22:18:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:18:10,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051145284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:18:10,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:18:10,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 44 [2022-12-05 22:18:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373499665] [2022-12-05 22:18:10,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:18:10,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-05 22:18:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:18:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-05 22:18:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1717, Unknown=1, NotChecked=84, Total=1980 [2022-12-05 22:18:10,758 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-05 22:18:10,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1411 transitions, 8945 flow. Second operand has 45 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:10,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:18:10,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-05 22:18:10,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-05 22:19:00,878 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 22:19:00,878 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 [2022-12-05 22:19:00,906 WARN L249 SmtUtils]: Removed 6 from assertion stack [2022-12-05 22:19:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-12-05 22:19:00,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 22:19:00,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 22:19:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-05 22:19:01,108 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. [2022-12-05 22:19:01,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 22:19:01,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 22:19:01,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 22:19:01,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 22:19:01,110 INFO L458 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2022-12-05 22:19:01,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:19:01,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:19:01,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:19:01 BasicIcfg [2022-12-05 22:19:01,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:19:01,115 INFO L158 Benchmark]: Toolchain (without parser) took 852889.63ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 164.0MB in the beginning and 1.1GB in the end (delta: -937.4MB). Peak memory consumption was 450.7MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,115 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 81.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:19:01,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.98ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 148.7MB in the end (delta: 15.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.70ms. Allocated memory is still 187.7MB. Free memory was 148.7MB in the beginning and 146.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,117 INFO L158 Benchmark]: Boogie Preprocessor took 40.95ms. Allocated memory is still 187.7MB. Free memory was 146.2MB in the beginning and 144.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,117 INFO L158 Benchmark]: RCFGBuilder took 566.52ms. Allocated memory is still 187.7MB. Free memory was 144.1MB in the beginning and 144.2MB in the end (delta: -107.1kB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,119 INFO L158 Benchmark]: TraceAbstraction took 852013.60ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 143.2MB in the beginning and 1.1GB in the end (delta: -958.1MB). Peak memory consumption was 429.1MB. Max. memory is 8.0GB. [2022-12-05 22:19:01,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 81.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.98ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 148.7MB in the end (delta: 15.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.70ms. Allocated memory is still 187.7MB. Free memory was 148.7MB in the beginning and 146.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.95ms. Allocated memory is still 187.7MB. Free memory was 146.2MB in the beginning and 144.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 566.52ms. Allocated memory is still 187.7MB. Free memory was 144.1MB in the beginning and 144.2MB in the end (delta: -107.1kB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * TraceAbstraction took 852013.60ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 143.2MB in the beginning and 1.1GB in the end (delta: -958.1MB). Peak memory consumption was 429.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 199 PlacesBefore, 44 PlacesAfterwards, 204 TransitionsBefore, 36 TransitionsAfterwards, 2284 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 120 TrivialYvCompositions, 35 ConcurrentYvCompositions, 12 ChoiceCompositions, 168 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1411, independent: 1374, independent conditional: 1374, independent unconditional: 0, dependent: 37, dependent conditional: 37, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1411, independent: 1374, independent conditional: 0, independent unconditional: 1374, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1411, independent: 1374, independent conditional: 0, independent unconditional: 1374, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1411, independent: 1374, independent conditional: 0, independent unconditional: 1374, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1204, independent: 1186, independent conditional: 0, independent unconditional: 1186, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1204, independent: 1186, independent conditional: 0, independent unconditional: 1186, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1411, independent: 188, independent conditional: 0, independent unconditional: 188, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 1204, unknown conditional: 0, unknown unconditional: 1204] , Statistics on independence cache: Total cache size (in pairs): 1818, Positive cache size: 1800, Positive conditional cache size: 0, Positive unconditional cache size: 1800, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 2063ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 241 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 270.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 1502 mSolverCounterUnknown, 3650 SdHoareTripleChecker+Valid, 80.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3650 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 78.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 358 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 472 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21007 IncrementalHoareTripleChecker+Invalid, 23339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 472 mSolverCounterUnsat, 0 mSDtfsCounter, 21007 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1502 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 654 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 549 ConstructedPredicates, 1 IntricatePredicates, 4 DeprecatedPredicates, 56622 ImplicationChecksByTransitivity, 184.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8945occurred in iteration=8, InterpolantAutomatonStates: 352, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 572.8s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 410 ConstructedInterpolants, 35 QuantifiedInterpolants, 8524 SizeOfPredicates, 77 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 17/40 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