/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 05:37:34,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 05:37:34,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 05:37:34,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 05:37:34,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 05:37:34,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 05:37:34,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 05:37:34,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 05:37:34,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 05:37:34,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 05:37:34,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 05:37:34,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 05:37:34,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 05:37:34,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 05:37:34,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 05:37:34,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 05:37:34,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 05:37:34,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 05:37:34,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 05:37:34,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 05:37:34,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 05:37:34,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 05:37:34,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 05:37:34,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 05:37:34,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 05:37:34,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 05:37:34,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 05:37:34,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 05:37:34,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 05:37:34,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 05:37:34,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 05:37:34,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 05:37:34,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 05:37:34,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 05:37:34,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 05:37:34,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 05:37:34,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 05:37:34,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 05:37:34,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 05:37:34,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 05:37:34,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 05:37:34,498 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-RepeatedSemanticLbe.epf [2022-12-13 05:37:34,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 05:37:34,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 05:37:34,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 05:37:34,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 05:37:34,523 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 05:37:34,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 05:37:34,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 05:37:34,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 05:37:34,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 05:37:34,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 05:37:34,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 05:37:34,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 05:37:34,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 05:37:34,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 05:37:34,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-13 05:37:34,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 05:37:34,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 05:37:34,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 05:37:34,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 05:37:34,783 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 05:37:34,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-12-13 05:37:35,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 05:37:35,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 05:37:35,997 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-12-13 05:37:36,010 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84f5c4279/63fd207e636947338294fa868be105a8/FLAG277907823 [2022-12-13 05:37:36,024 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84f5c4279/63fd207e636947338294fa868be105a8 [2022-12-13 05:37:36,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 05:37:36,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 05:37:36,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 05:37:36,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 05:37:36,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 05:37:36,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512b13b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36, skipping insertion in model container [2022-12-13 05:37:36,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 05:37:36,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 05:37:36,333 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 05:37:36,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 05:37:36,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 05:37:36,360 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 05:37:36,391 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 05:37:36,404 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 05:37:36,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 05:37:36,440 INFO L208 MainTranslator]: Completed translation [2022-12-13 05:37:36,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36 WrapperNode [2022-12-13 05:37:36,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 05:37:36,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 05:37:36,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 05:37:36,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 05:37:36,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,501 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-12-13 05:37:36,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 05:37:36,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 05:37:36,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 05:37:36,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 05:37:36,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 05:37:36,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 05:37:36,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 05:37:36,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 05:37:36,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (1/1) ... [2022-12-13 05:37:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 05:37:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 05:37:36,577 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) [2022-12-13 05:37:36,593 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 [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 05:37:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 05:37:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 05:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 05:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 05:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 05:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 05:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 05:37:36,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 05:37:36,614 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 05:37:36,764 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 05:37:36,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 05:37:36,988 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 05:37:36,996 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 05:37:36,996 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 05:37:36,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:37:36 BoogieIcfgContainer [2022-12-13 05:37:36,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 05:37:37,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 05:37:37,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 05:37:37,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 05:37:37,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:37:36" (1/3) ... [2022-12-13 05:37:37,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9cb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:37:37, skipping insertion in model container [2022-12-13 05:37:37,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:36" (2/3) ... [2022-12-13 05:37:37,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9cb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:37:37, skipping insertion in model container [2022-12-13 05:37:37,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:37:36" (3/3) ... [2022-12-13 05:37:37,004 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-13 05:37:37,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 05:37:37,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 05:37:37,021 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 05:37:37,130 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 05:37:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 296 flow [2022-12-13 05:37:37,201 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2022-12-13 05:37:37,201 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 05:37:37,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 10/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 05:37:37,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 140 transitions, 296 flow [2022-12-13 05:37:37,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 129 transitions, 267 flow [2022-12-13 05:37:37,217 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:37,230 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 129 transitions, 267 flow [2022-12-13 05:37:37,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 129 transitions, 267 flow [2022-12-13 05:37:37,259 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-13 05:37:37,259 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 05:37:37,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 10/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 05:37:37,263 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 129 transitions, 267 flow [2022-12-13 05:37:37,263 INFO L226 LiptonReduction]: Number of co-enabled transitions 3840 [2022-12-13 05:37:42,565 INFO L241 LiptonReduction]: Total number of compositions: 104 [2022-12-13 05:37:42,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 05:37:42,584 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=REPEATED_LIPTON_PN, 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;@3b859150, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 05:37:42,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 05:37:42,588 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2022-12-13 05:37:42,588 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 05:37:42,588 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:42,588 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 05:37:42,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 18037318, now seen corresponding path program 1 times [2022-12-13 05:37:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377131879] [2022-12-13 05:37:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377131879] [2022-12-13 05:37:42,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377131879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:42,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:42,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 05:37:42,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951601639] [2022-12-13 05:37:42,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 05:37:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 05:37:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 05:37:42,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 90 [2022-12-13 05:37:42,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 189 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2022-12-13 05:37:42,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:42,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 90 [2022-12-13 05:37:42,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:43,131 INFO L130 PetriNetUnfolder]: 3728/6097 cut-off events. [2022-12-13 05:37:43,131 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 05:37:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11904 conditions, 6097 events. 3728/6097 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 40368 event pairs, 3232 based on Foata normal form. 0/2066 useless extension candidates. Maximal degree in co-relation 11613. Up to 5728 conditions per place. [2022-12-13 05:37:43,162 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 65 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2022-12-13 05:37:43,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 05:37:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 05:37:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2022-12-13 05:37:43,171 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2022-12-13 05:37:43,174 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2022-12-13 05:37:43,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,207 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:43,208 INFO L89 Accepts]: Start accepts. Operand has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,210 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:43,210 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:43,210 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,214 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,214 INFO L226 LiptonReduction]: Number of co-enabled transitions 1206 [2022-12-13 05:37:43,246 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 05:37:43,247 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 40 [2022-12-13 05:37:43,247 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 301 flow [2022-12-13 05:37:43,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2022-12-13 05:37:43,248 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:43,248 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:43,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 05:37:43,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2114910005, now seen corresponding path program 1 times [2022-12-13 05:37:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:43,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668072779] [2022-12-13 05:37:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:43,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668072779] [2022-12-13 05:37:43,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668072779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:43,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:43,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 05:37:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340335525] [2022-12-13 05:37:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 05:37:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 05:37:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 05:37:43,381 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 81 [2022-12-13 05:37:43,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-12-13 05:37:43,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:43,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 81 [2022-12-13 05:37:43,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:43,872 INFO L130 PetriNetUnfolder]: 5052/8444 cut-off events. [2022-12-13 05:37:43,872 INFO L131 PetriNetUnfolder]: For 274/316 co-relation queries the response was YES. [2022-12-13 05:37:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24313 conditions, 8444 events. 5052/8444 cut-off events. For 274/316 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 56260 event pairs, 2390 based on Foata normal form. 71/3132 useless extension candidates. Maximal degree in co-relation 23724. Up to 7733 conditions per place. [2022-12-13 05:37:43,891 INFO L137 encePairwiseOnDemand]: 68/81 looper letters, 71 selfloop transitions, 3 changer transitions 36/124 dead transitions. [2022-12-13 05:37:43,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 695 flow [2022-12-13 05:37:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 05:37:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 05:37:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2022-12-13 05:37:43,893 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 05:37:43,893 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2022-12-13 05:37:43,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 124 transitions, 695 flow [2022-12-13 05:37:43,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 88 transitions, 483 flow [2022-12-13 05:37:43,933 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:43,934 INFO L89 Accepts]: Start accepts. Operand has 59 places, 88 transitions, 483 flow [2022-12-13 05:37:43,934 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:43,934 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:43,934 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 88 transitions, 483 flow [2022-12-13 05:37:43,937 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 88 transitions, 483 flow [2022-12-13 05:37:43,937 INFO L226 LiptonReduction]: Number of co-enabled transitions 1058 [2022-12-13 05:37:43,947 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 05:37:43,949 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 16 [2022-12-13 05:37:43,949 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 88 transitions, 483 flow [2022-12-13 05:37:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-12-13 05:37:43,950 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:43,950 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 05:37:43,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1458592617, now seen corresponding path program 1 times [2022-12-13 05:37:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555463669] [2022-12-13 05:37:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:44,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555463669] [2022-12-13 05:37:44,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555463669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:44,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:44,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 05:37:44,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378706188] [2022-12-13 05:37:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 05:37:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 05:37:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 05:37:44,088 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2022-12-13 05:37:44,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 88 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 05:37:44,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:44,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2022-12-13 05:37:44,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:44,255 INFO L130 PetriNetUnfolder]: 977/1809 cut-off events. [2022-12-13 05:37:44,255 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-12-13 05:37:44,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 1809 events. 977/1809 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10521 event pairs, 106 based on Foata normal form. 90/1189 useless extension candidates. Maximal degree in co-relation 6461. Up to 1571 conditions per place. [2022-12-13 05:37:44,261 INFO L137 encePairwiseOnDemand]: 45/55 looper letters, 56 selfloop transitions, 13 changer transitions 28/111 dead transitions. [2022-12-13 05:37:44,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 827 flow [2022-12-13 05:37:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 05:37:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 05:37:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2022-12-13 05:37:44,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2022-12-13 05:37:44,263 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -26 predicate places. [2022-12-13 05:37:44,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 111 transitions, 827 flow [2022-12-13 05:37:44,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 83 transitions, 600 flow [2022-12-13 05:37:44,275 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:44,276 INFO L89 Accepts]: Start accepts. Operand has 51 places, 83 transitions, 600 flow [2022-12-13 05:37:44,276 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:44,276 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:44,277 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 83 transitions, 600 flow [2022-12-13 05:37:44,278 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 83 transitions, 600 flow [2022-12-13 05:37:44,278 INFO L226 LiptonReduction]: Number of co-enabled transitions 528 [2022-12-13 05:37:44,280 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 05:37:44,281 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 6 [2022-12-13 05:37:44,281 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 83 transitions, 600 flow [2022-12-13 05:37:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 05:37:44,281 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:44,281 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:44,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 05:37:44,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:44,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1572652444, now seen corresponding path program 1 times [2022-12-13 05:37:44,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:44,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122322562] [2022-12-13 05:37:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:44,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:44,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122322562] [2022-12-13 05:37:44,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122322562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:44,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:44,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 05:37:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664585457] [2022-12-13 05:37:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 05:37:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 05:37:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 05:37:44,382 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2022-12-13 05:37:44,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 83 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-13 05:37:44,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:44,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2022-12-13 05:37:44,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:44,482 INFO L130 PetriNetUnfolder]: 691/1349 cut-off events. [2022-12-13 05:37:44,482 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-12-13 05:37:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5716 conditions, 1349 events. 691/1349 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7166 event pairs, 47 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 5433. Up to 1041 conditions per place. [2022-12-13 05:37:44,488 INFO L137 encePairwiseOnDemand]: 41/45 looper letters, 75 selfloop transitions, 2 changer transitions 12/104 dead transitions. [2022-12-13 05:37:44,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 104 transitions, 946 flow [2022-12-13 05:37:44,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 05:37:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 05:37:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-12-13 05:37:44,489 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2022-12-13 05:37:44,490 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -34 predicate places. [2022-12-13 05:37:44,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 104 transitions, 946 flow [2022-12-13 05:37:44,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 92 transitions, 832 flow [2022-12-13 05:37:44,501 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:44,501 INFO L89 Accepts]: Start accepts. Operand has 52 places, 92 transitions, 832 flow [2022-12-13 05:37:44,502 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:44,502 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:44,502 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 92 transitions, 832 flow [2022-12-13 05:37:44,504 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 92 transitions, 832 flow [2022-12-13 05:37:44,505 INFO L226 LiptonReduction]: Number of co-enabled transitions 536 [2022-12-13 05:37:44,539 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 05:37:44,540 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 39 [2022-12-13 05:37:44,540 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 92 transitions, 832 flow [2022-12-13 05:37:44,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-13 05:37:44,541 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:44,541 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:44,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 05:37:44,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1060422526, now seen corresponding path program 1 times [2022-12-13 05:37:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:44,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491656292] [2022-12-13 05:37:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:44,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:44,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 05:37:44,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075244414] [2022-12-13 05:37:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:44,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 05:37:44,567 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) [2022-12-13 05:37:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 05:37:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:44,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 05:37:44,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 05:37:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:45,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 05:37:45,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:45,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491656292] [2022-12-13 05:37:45,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 05:37:45,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075244414] [2022-12-13 05:37:45,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075244414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:45,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:45,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 05:37:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232851084] [2022-12-13 05:37:45,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 05:37:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 05:37:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 05:37:45,009 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2022-12-13 05:37:45,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 92 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-12-13 05:37:45,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:45,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2022-12-13 05:37:45,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:45,250 INFO L130 PetriNetUnfolder]: 882/1671 cut-off events. [2022-12-13 05:37:45,251 INFO L131 PetriNetUnfolder]: For 1126/1126 co-relation queries the response was YES. [2022-12-13 05:37:45,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8644 conditions, 1671 events. 882/1671 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8927 event pairs, 32 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 8235. Up to 1350 conditions per place. [2022-12-13 05:37:45,259 INFO L137 encePairwiseOnDemand]: 40/45 looper letters, 109 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2022-12-13 05:37:45,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 05:37:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 05:37:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-13 05:37:45,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2022-12-13 05:37:45,263 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -32 predicate places. [2022-12-13 05:37:45,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,283 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:45,284 INFO L89 Accepts]: Start accepts. Operand has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,286 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:45,286 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:45,286 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,289 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 128 transitions, 1430 flow [2022-12-13 05:37:45,290 INFO L226 LiptonReduction]: Number of co-enabled transitions 716 [2022-12-13 05:37:45,355 INFO L241 LiptonReduction]: Total number of compositions: 2 [2022-12-13 05:37:45,356 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 73 [2022-12-13 05:37:45,356 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 127 transitions, 1418 flow [2022-12-13 05:37:45,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-12-13 05:37:45,356 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:45,356 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:45,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 05:37:45,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:45,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1486652841, now seen corresponding path program 1 times [2022-12-13 05:37:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:45,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661523860] [2022-12-13 05:37:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:45,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 05:37:45,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599516996] [2022-12-13 05:37:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:45,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:45,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 05:37:45,583 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) [2022-12-13 05:37:45,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 05:37:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:45,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 05:37:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 05:37:45,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 05:37:45,814 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 10 treesize of output 12 [2022-12-13 05:37:45,827 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 05:37:45,828 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 20 treesize of output 22 [2022-12-13 05:37:45,865 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 13 treesize of output 15 [2022-12-13 05:37:45,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 45 [2022-12-13 05:37:46,061 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 60 treesize of output 54 [2022-12-13 05:37:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:46,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 05:37:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661523860] [2022-12-13 05:37:46,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 05:37:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599516996] [2022-12-13 05:37:46,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599516996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:46,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:46,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 05:37:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690230046] [2022-12-13 05:37:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:46,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 05:37:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 05:37:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 05:37:46,129 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2022-12-13 05:37:46,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 127 transitions, 1418 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2022-12-13 05:37:46,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:46,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2022-12-13 05:37:46,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:46,846 INFO L130 PetriNetUnfolder]: 3149/5683 cut-off events. [2022-12-13 05:37:46,846 INFO L131 PetriNetUnfolder]: For 8656/8659 co-relation queries the response was YES. [2022-12-13 05:37:46,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32488 conditions, 5683 events. 3149/5683 cut-off events. For 8656/8659 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 36659 event pairs, 252 based on Foata normal form. 0/4138 useless extension candidates. Maximal degree in co-relation 31244. Up to 4256 conditions per place. [2022-12-13 05:37:46,876 INFO L137 encePairwiseOnDemand]: 35/45 looper letters, 301 selfloop transitions, 43 changer transitions 40/396 dead transitions. [2022-12-13 05:37:46,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 396 transitions, 5335 flow [2022-12-13 05:37:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 05:37:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 05:37:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2022-12-13 05:37:46,878 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2022-12-13 05:37:46,880 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -25 predicate places. [2022-12-13 05:37:46,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 396 transitions, 5335 flow [2022-12-13 05:37:46,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 356 transitions, 4869 flow [2022-12-13 05:37:46,948 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:46,949 INFO L89 Accepts]: Start accepts. Operand has 60 places, 356 transitions, 4869 flow [2022-12-13 05:37:46,951 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:46,956 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:46,956 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 356 transitions, 4869 flow [2022-12-13 05:37:46,971 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 356 transitions, 4869 flow [2022-12-13 05:37:46,971 INFO L226 LiptonReduction]: Number of co-enabled transitions 1094 [2022-12-13 05:37:46,979 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 05:37:46,980 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 32 [2022-12-13 05:37:46,980 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 356 transitions, 4869 flow [2022-12-13 05:37:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2022-12-13 05:37:46,980 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:46,981 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:46,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 05:37:47,186 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,SelfDestructingSolverStorable5 [2022-12-13 05:37:47,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -489027222, now seen corresponding path program 1 times [2022-12-13 05:37:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818220510] [2022-12-13 05:37:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:47,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 05:37:47,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579610006] [2022-12-13 05:37:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 05:37:47,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 05:37:47,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 05:37:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 05:37:47,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 05:37:47,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 05:37:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 05:37:47,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 05:37:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 05:37:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818220510] [2022-12-13 05:37:47,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 05:37:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579610006] [2022-12-13 05:37:47,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579610006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 05:37:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 05:37:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 05:37:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347580504] [2022-12-13 05:37:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 05:37:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 05:37:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 05:37:47,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 05:37:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 05:37:47,343 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 05:37:47,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 356 transitions, 4869 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-12-13 05:37:47,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 05:37:47,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 05:37:47,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 05:37:47,726 INFO L130 PetriNetUnfolder]: 2335/4189 cut-off events. [2022-12-13 05:37:47,726 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2022-12-13 05:37:47,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28001 conditions, 4189 events. 2335/4189 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23360 event pairs, 172 based on Foata normal form. 161/3167 useless extension candidates. Maximal degree in co-relation 27094. Up to 3265 conditions per place. [2022-12-13 05:37:47,740 INFO L137 encePairwiseOnDemand]: 38/44 looper letters, 258 selfloop transitions, 6 changer transitions 81/358 dead transitions. [2022-12-13 05:37:47,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 358 transitions, 5581 flow [2022-12-13 05:37:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 05:37:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 05:37:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2022-12-13 05:37:47,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2022-12-13 05:37:47,742 INFO L295 CegarLoopForPetriNet]: 87 programPoint places, -25 predicate places. [2022-12-13 05:37:47,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 358 transitions, 5581 flow [2022-12-13 05:37:47,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 277 transitions, 4309 flow [2022-12-13 05:37:47,779 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 05:37:47,779 INFO L89 Accepts]: Start accepts. Operand has 60 places, 277 transitions, 4309 flow [2022-12-13 05:37:47,780 INFO L95 Accepts]: Finished accepts. [2022-12-13 05:37:47,780 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 05:37:47,780 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 277 transitions, 4309 flow [2022-12-13 05:37:47,790 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 277 transitions, 4309 flow [2022-12-13 05:37:47,790 INFO L226 LiptonReduction]: Number of co-enabled transitions 596 [2022-12-13 05:37:47,795 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 05:37:47,796 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 17 [2022-12-13 05:37:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 277 transitions, 4309 flow [2022-12-13 05:37:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-12-13 05:37:47,796 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 05:37:47,796 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:47,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 05:37:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:48,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 05:37:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 05:37:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1754473554, now seen corresponding path program 1 times [2022-12-13 05:37:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 05:37:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358579811] [2022-12-13 05:37:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:48,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 05:37:48,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 05:37:48,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004507351] [2022-12-13 05:37:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 05:37:48,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:48,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 05:37:48,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 05:37:48,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 05:37:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 05:37:48,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 05:37:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 05:37:48,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 05:37:48,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 05:37:48,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 05:37:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-12-13 05:37:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 05:37:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-13 05:37:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-13 05:37:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-13 05:37:48,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 05:37:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 05:37:48,493 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 05:37:48,498 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 05:37:48,498 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 05:37:48,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:37:48 BasicIcfg [2022-12-13 05:37:48,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 05:37:48,535 INFO L158 Benchmark]: Toolchain (without parser) took 12508.03ms. Allocated memory was 206.6MB in the beginning and 459.3MB in the end (delta: 252.7MB). Free memory was 181.8MB in the beginning and 259.3MB in the end (delta: -77.4MB). Peak memory consumption was 176.8MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,535 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 183.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 05:37:48,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.44ms. Allocated memory is still 206.6MB. Free memory was 181.8MB in the beginning and 161.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.78ms. Allocated memory is still 206.6MB. Free memory was 160.9MB in the beginning and 158.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,536 INFO L158 Benchmark]: Boogie Preprocessor took 32.49ms. Allocated memory is still 206.6MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,536 INFO L158 Benchmark]: RCFGBuilder took 463.21ms. Allocated memory is still 206.6MB. Free memory was 156.7MB in the beginning and 138.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,536 INFO L158 Benchmark]: TraceAbstraction took 11534.73ms. Allocated memory was 206.6MB in the beginning and 459.3MB in the end (delta: 252.7MB). Free memory was 137.8MB in the beginning and 259.3MB in the end (delta: -121.5MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. [2022-12-13 05:37:48,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 183.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.44ms. Allocated memory is still 206.6MB. Free memory was 181.8MB in the beginning and 161.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.78ms. Allocated memory is still 206.6MB. Free memory was 160.9MB in the beginning and 158.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.49ms. Allocated memory is still 206.6MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 463.21ms. Allocated memory is still 206.6MB. Free memory was 156.7MB in the beginning and 138.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 11534.73ms. Allocated memory was 206.6MB in the beginning and 459.3MB in the end (delta: 252.7MB). Free memory was 137.8MB in the beginning and 259.3MB in the end (delta: -121.5MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 126 PlacesBefore, 87 PlacesAfterwards, 129 TransitionsBefore, 90 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 55 ConcurrentYvCompositions, 3 ChoiceCompositions, 104 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8784, independent: 8597, independent conditional: 8597, independent unconditional: 0, dependent: 187, dependent conditional: 187, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8784, independent: 8597, independent conditional: 0, independent unconditional: 8597, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8784, independent: 8597, independent conditional: 0, independent unconditional: 8597, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8784, independent: 8597, independent conditional: 0, independent unconditional: 8597, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3696, independent: 3645, independent conditional: 0, independent unconditional: 3645, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3696, independent: 3526, independent conditional: 0, independent unconditional: 3526, dependent: 170, dependent conditional: 0, dependent unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 170, independent: 119, independent conditional: 0, independent unconditional: 119, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 207, independent: 96, independent conditional: 0, independent unconditional: 96, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8784, independent: 4952, independent conditional: 0, independent unconditional: 4952, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 3696, unknown conditional: 0, unknown unconditional: 3696] , Statistics on independence cache: Total cache size (in pairs): 9355, Positive cache size: 9304, Positive conditional cache size: 0, Positive unconditional cache size: 9304, Negative cache size: 51, Negative conditional cache size: 0, Negative unconditional cache size: 51, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 82 PlacesBefore, 82 PlacesAfterwards, 81 TransitionsBefore, 81 TransitionsAfterwards, 1206 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 87, independent: 80, independent conditional: 80, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 87, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 87, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 87, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 67, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 67, independent: 63, independent conditional: 0, independent unconditional: 63, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 67, unknown conditional: 0, unknown unconditional: 67] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 59 PlacesBefore, 59 PlacesAfterwards, 88 TransitionsBefore, 88 TransitionsAfterwards, 1058 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, independent: 8, independent conditional: 8, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 12, independent: 8, independent conditional: 4, independent unconditional: 4, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 12, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 8, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 51 PlacesBefore, 51 PlacesAfterwards, 83 TransitionsBefore, 83 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 52 PlacesBefore, 52 PlacesAfterwards, 92 TransitionsBefore, 92 TransitionsAfterwards, 536 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 2, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, independent: 2, independent conditional: 2, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 70, Positive conditional cache size: 2, Positive unconditional cache size: 68, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 55 PlacesBefore, 55 PlacesAfterwards, 128 TransitionsBefore, 127 TransitionsAfterwards, 716 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 3, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 3, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 73, Positive conditional cache size: 2, Positive unconditional cache size: 71, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 60 PlacesBefore, 60 PlacesAfterwards, 356 TransitionsBefore, 356 TransitionsAfterwards, 1094 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 73, Positive conditional cache size: 2, Positive unconditional cache size: 71, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 60 PlacesBefore, 60 PlacesAfterwards, 277 TransitionsBefore, 277 TransitionsAfterwards, 596 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 73, Positive conditional cache size: 2, Positive unconditional cache size: 71, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 6 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: 11.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 324 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 743 IncrementalHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 4 mSDtfsCounter, 743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4869occurred in iteration=6, InterpolantAutomatonStates: 26, 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, 0.9s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 8 QuantifiedInterpolants, 653 SizeOfPredicates, 17 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 2/2 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 proved your program to be incorrect! [2022-12-13 05:37:48,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...