/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -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 [2022-12-11 22:59:58,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 22:59:58,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 22:59:58,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 22:59:58,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 22:59:58,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 22:59:58,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 22:59:58,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 22:59:58,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 22:59:58,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 22:59:58,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 22:59:58,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 22:59:58,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 22:59:58,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 22:59:58,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 22:59:58,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 22:59:58,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 22:59:58,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 22:59:58,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 22:59:58,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 22:59:58,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 22:59:58,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 22:59:58,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 22:59:58,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 22:59:58,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 22:59:58,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 22:59:58,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 22:59:58,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 22:59:58,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 22:59:58,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 22:59:58,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 22:59:58,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 22:59:58,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 22:59:58,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 22:59:58,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 22:59:58,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 22:59:58,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 22:59:58,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 22:59:58,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 22:59:58,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 22:59:58,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 22:59:58,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 22:59:58,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 22:59:58,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 22:59:58,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 22:59:58,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 22:59:58,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 22:59:58,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 22:59:58,495 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 22:59:58,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 22:59:58,495 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 22:59:58,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 22:59:58,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 22:59:58,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:59:58,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 22:59:58,497 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 22:59:58,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 22:59:58,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 22:59:58,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 22:59:58,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 22:59:58,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 22:59:58,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 22:59:58,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 22:59:58,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 22:59:58,748 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 22:59:58,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-12-11 22:59:59,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 22:59:59,825 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 22:59:59,825 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-12-11 22:59:59,841 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dad667d/0c52f879fd5e42cb9644fce1e380b602/FLAGe14ca0bfb [2022-12-11 23:00:00,167 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dad667d/0c52f879fd5e42cb9644fce1e380b602 [2022-12-11 23:00:00,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:00:00,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:00:00,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:00:00,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:00:00,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:00:00,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a15626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00, skipping insertion in model container [2022-12-11 23:00:00,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:00:00,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:00:00,442 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] [2022-12-11 23:00:00,452 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] [2022-12-11 23:00:00,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:00:00,470 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:00:00,500 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] [2022-12-11 23:00:00,502 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] [2022-12-11 23:00:00,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:00:00,543 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:00:00,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00 WrapperNode [2022-12-11 23:00:00,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:00:00,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:00:00,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:00:00,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:00:00,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,580 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-12-11 23:00:00,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:00:00,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:00:00,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:00:00,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:00:00,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,597 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:00:00,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:00:00,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:00:00,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:00:00,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (1/1) ... [2022-12-11 23:00:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:00:00,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:00,636 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) [2022-12-11 23:00:00,650 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 [2022-12-11 23:00:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 23:00:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 23:00:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 23:00:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 23:00:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 23:00:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:00:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 23:00:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:00:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:00:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:00:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-11 23:00:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:00:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:00:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:00:00,675 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:00:00,819 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:00:00,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:00:00,972 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:00:00,978 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:00:00,978 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 23:00:00,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:00:00 BoogieIcfgContainer [2022-12-11 23:00:00,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:00:00,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:00:00,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:00:00,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:00:00,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:00:00" (1/3) ... [2022-12-11 23:00:00,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18583a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:00:00, skipping insertion in model container [2022-12-11 23:00:00,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:00" (2/3) ... [2022-12-11 23:00:00,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18583a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:00:00, skipping insertion in model container [2022-12-11 23:00:00,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:00:00" (3/3) ... [2022-12-11 23:00:00,989 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-11 23:00:01,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:00:01,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-11 23:00:01,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:00:01,120 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 23:00:01,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 296 flow [2022-12-11 23:00:01,207 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2022-12-11 23:00:01,207 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:00:01,211 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. [2022-12-11 23:00:01,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 140 transitions, 296 flow [2022-12-11 23:00:01,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 129 transitions, 267 flow [2022-12-11 23:00:01,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:00:01,224 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e240ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:00:01,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-11 23:00:01,244 INFO L130 PetriNetUnfolder]: 5/104 cut-off events. [2022-12-11 23:00:01,244 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:00:01,244 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:01,245 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:01,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1502090148, now seen corresponding path program 1 times [2022-12-11 23:00:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:01,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380467362] [2022-12-11 23:00:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:01,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:01,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932032490] [2022-12-11 23:00:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:01,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:01,363 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) [2022-12-11 23:00:01,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 23:00:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 23:00:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:01,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380467362] [2022-12-11 23:00:01,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932032490] [2022-12-11 23:00:01,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932032490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:01,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:01,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:00:01,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135403170] [2022-12-11 23:00:01,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:01,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 23:00:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 23:00:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 23:00:01,787 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 140 [2022-12-11 23:00:01,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 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) [2022-12-11 23:00:01,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:01,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 140 [2022-12-11 23:00:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:01,999 INFO L130 PetriNetUnfolder]: 48/322 cut-off events. [2022-12-11 23:00:01,999 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-11 23:00:02,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 322 events. 48/322 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1389 event pairs, 5 based on Foata normal form. 30/316 useless extension candidates. Maximal degree in co-relation 338. Up to 44 conditions per place. [2022-12-11 23:00:02,006 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 24 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-12-11 23:00:02,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 132 transitions, 334 flow [2022-12-11 23:00:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 23:00:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 23:00:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2022-12-11 23:00:02,021 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8982142857142857 [2022-12-11 23:00:02,024 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, -1 predicate places. [2022-12-11 23:00:02,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 132 transitions, 334 flow [2022-12-11 23:00:02,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 132 transitions, 334 flow [2022-12-11 23:00:02,031 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 132 transitions, 334 flow [2022-12-11 23:00:02,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 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) [2022-12-11 23:00:02,032 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:02,032 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:02,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 23:00:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-11 23:00:02,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1903556418, now seen corresponding path program 1 times [2022-12-11 23:00:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127725407] [2022-12-11 23:00:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127725407] [2022-12-11 23:00:02,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127725407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:02,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:02,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:02,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603624009] [2022-12-11 23:00:02,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:02,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:02,507 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2022-12-11 23:00:02,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 132 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-12-11 23:00:02,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:02,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2022-12-11 23:00:02,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:02,595 INFO L130 PetriNetUnfolder]: 97/671 cut-off events. [2022-12-11 23:00:02,595 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-12-11 23:00:02,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 671 events. 97/671 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3603 event pairs, 16 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 723. Up to 69 conditions per place. [2022-12-11 23:00:02,599 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 15 selfloop transitions, 3 changer transitions 1/139 dead transitions. [2022-12-11 23:00:02,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 411 flow [2022-12-11 23:00:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-12-11 23:00:02,602 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.919047619047619 [2022-12-11 23:00:02,603 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 1 predicate places. [2022-12-11 23:00:02,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 139 transitions, 411 flow [2022-12-11 23:00:02,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 402 flow [2022-12-11 23:00:02,608 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 138 transitions, 402 flow [2022-12-11 23:00:02,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-12-11 23:00:02,608 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:02,609 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:00:02,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 896565182, now seen corresponding path program 1 times [2022-12-11 23:00:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:02,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296949177] [2022-12-11 23:00:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:02,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296949177] [2022-12-11 23:00:02,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296949177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:02,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:02,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652645708] [2022-12-11 23:00:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:02,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:02,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:02,808 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 140 [2022-12-11 23:00:02,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-12-11 23:00:02,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:02,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 140 [2022-12-11 23:00:02,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:02,874 INFO L130 PetriNetUnfolder]: 76/535 cut-off events. [2022-12-11 23:00:02,874 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2022-12-11 23:00:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 535 events. 76/535 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2725 event pairs, 11 based on Foata normal form. 9/500 useless extension candidates. Maximal degree in co-relation 602. Up to 54 conditions per place. [2022-12-11 23:00:02,876 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 26 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2022-12-11 23:00:02,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 142 transitions, 508 flow [2022-12-11 23:00:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-12-11 23:00:02,879 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2022-12-11 23:00:02,880 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2022-12-11 23:00:02,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 142 transitions, 508 flow [2022-12-11 23:00:02,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 142 transitions, 508 flow [2022-12-11 23:00:02,882 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 508 flow [2022-12-11 23:00:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-12-11 23:00:02,883 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:02,883 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:02,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:00:02,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -281590851, now seen corresponding path program 1 times [2022-12-11 23:00:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:02,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085857429] [2022-12-11 23:00:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085857429] [2022-12-11 23:00:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085857429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:00:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248562238] [2022-12-11 23:00:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:03,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:00:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:00:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:00:03,135 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 140 [2022-12-11 23:00:03,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 142 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2022-12-11 23:00:03,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:03,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 140 [2022-12-11 23:00:03,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:03,214 INFO L130 PetriNetUnfolder]: 49/365 cut-off events. [2022-12-11 23:00:03,214 INFO L131 PetriNetUnfolder]: For 349/349 co-relation queries the response was YES. [2022-12-11 23:00:03,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 365 events. 49/365 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1383 event pairs, 7 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 450. Up to 47 conditions per place. [2022-12-11 23:00:03,215 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 24 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2022-12-11 23:00:03,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 499 flow [2022-12-11 23:00:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:00:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:00:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-12-11 23:00:03,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-12-11 23:00:03,218 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2022-12-11 23:00:03,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 134 transitions, 499 flow [2022-12-11 23:00:03,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 134 transitions, 499 flow [2022-12-11 23:00:03,220 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 499 flow [2022-12-11 23:00:03,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2022-12-11 23:00:03,221 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:03,221 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:00:03,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash 508411708, now seen corresponding path program 1 times [2022-12-11 23:00:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:03,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520262996] [2022-12-11 23:00:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:03,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413443937] [2022-12-11 23:00:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:03,241 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) [2022-12-11 23:00:03,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 23:00:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-11 23:00:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:03,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520262996] [2022-12-11 23:00:03,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413443937] [2022-12-11 23:00:03,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413443937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:03,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:03,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 23:00:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365134068] [2022-12-11 23:00:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 23:00:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 23:00:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-11 23:00:03,708 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 140 [2022-12-11 23:00:03,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 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) [2022-12-11 23:00:03,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:03,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 140 [2022-12-11 23:00:03,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:03,862 INFO L130 PetriNetUnfolder]: 69/469 cut-off events. [2022-12-11 23:00:03,862 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2022-12-11 23:00:03,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 469 events. 69/469 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2053 event pairs, 12 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 661. Up to 74 conditions per place. [2022-12-11 23:00:03,864 INFO L137 encePairwiseOnDemand]: 131/140 looper letters, 36 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2022-12-11 23:00:03,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 673 flow [2022-12-11 23:00:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 23:00:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 23:00:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 918 transitions. [2022-12-11 23:00:03,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8196428571428571 [2022-12-11 23:00:03,868 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 15 predicate places. [2022-12-11 23:00:03,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 673 flow [2022-12-11 23:00:03,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 145 transitions, 673 flow [2022-12-11 23:00:03,869 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 673 flow [2022-12-11 23:00:03,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 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) [2022-12-11 23:00:03,870 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:03,870 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:03,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:04,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -261505017, now seen corresponding path program 1 times [2022-12-11 23:00:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:04,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027866428] [2022-12-11 23:00:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:04,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:04,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604667030] [2022-12-11 23:00:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:04,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:04,098 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) [2022-12-11 23:00:04,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 23:00:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 23:00:04,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:04,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-11 23:00:04,400 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:00:04,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 23:00:04,419 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:00:04,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 23:00:04,498 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 [2022-12-11 23:00:04,541 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 [2022-12-11 23:00:04,630 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 [2022-12-11 23:00:04,728 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 52 treesize of output 46 [2022-12-11 23:00:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:04,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:04,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:04,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027866428] [2022-12-11 23:00:04,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:04,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604667030] [2022-12-11 23:00:04,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604667030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:04,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:04,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 23:00:04,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57426184] [2022-12-11 23:00:04,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:04,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 23:00:04,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 23:00:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-11 23:00:04,821 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 140 [2022-12-11 23:00:04,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 673 flow. Second operand has 16 states, 16 states have (on average 75.75) internal successors, (1212), 16 states have internal predecessors, (1212), 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) [2022-12-11 23:00:04,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:04,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 140 [2022-12-11 23:00:04,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:06,431 INFO L130 PetriNetUnfolder]: 3064/7882 cut-off events. [2022-12-11 23:00:06,432 INFO L131 PetriNetUnfolder]: For 5393/5458 co-relation queries the response was YES. [2022-12-11 23:00:06,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16669 conditions, 7882 events. 3064/7882 cut-off events. For 5393/5458 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 64132 event pairs, 881 based on Foata normal form. 1/7098 useless extension candidates. Maximal degree in co-relation 14651. Up to 1541 conditions per place. [2022-12-11 23:00:06,462 INFO L137 encePairwiseOnDemand]: 119/140 looper letters, 275 selfloop transitions, 58 changer transitions 16/424 dead transitions. [2022-12-11 23:00:06,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 424 transitions, 2364 flow [2022-12-11 23:00:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:00:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:00:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2447 transitions. [2022-12-11 23:00:06,506 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6027093596059113 [2022-12-11 23:00:06,506 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 43 predicate places. [2022-12-11 23:00:06,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 424 transitions, 2364 flow [2022-12-11 23:00:06,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 408 transitions, 2183 flow [2022-12-11 23:00:06,532 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 408 transitions, 2183 flow [2022-12-11 23:00:06,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 75.75) internal successors, (1212), 16 states have internal predecessors, (1212), 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) [2022-12-11 23:00:06,533 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:06,533 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:06,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 23:00:06,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:06,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1213639723, now seen corresponding path program 1 times [2022-12-11 23:00:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:06,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828504382] [2022-12-11 23:00:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:06,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:06,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:06,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130567187] [2022-12-11 23:00:06,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:06,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:06,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:06,753 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) [2022-12-11 23:00:06,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 23:00:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:06,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-11 23:00:06,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:06,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828504382] [2022-12-11 23:00:06,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130567187] [2022-12-11 23:00:06,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130567187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:06,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:06,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936510250] [2022-12-11 23:00:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:06,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:06,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:06,859 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2022-12-11 23:00:06,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 408 transitions, 2183 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2022-12-11 23:00:06,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:06,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2022-12-11 23:00:06,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:07,339 INFO L130 PetriNetUnfolder]: 2304/6033 cut-off events. [2022-12-11 23:00:07,339 INFO L131 PetriNetUnfolder]: For 4234/4271 co-relation queries the response was YES. [2022-12-11 23:00:07,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 6033 events. 2304/6033 cut-off events. For 4234/4271 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 44851 event pairs, 747 based on Foata normal form. 1/5444 useless extension candidates. Maximal degree in co-relation 11422. Up to 937 conditions per place. [2022-12-11 23:00:07,357 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 28 selfloop transitions, 5 changer transitions 7/373 dead transitions. [2022-12-11 23:00:07,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 373 transitions, 1976 flow [2022-12-11 23:00:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-12-11 23:00:07,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-12-11 23:00:07,359 INFO L295 CegarLoopForPetriNet]: 126 programPoint places, 44 predicate places. [2022-12-11 23:00:07,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 373 transitions, 1976 flow [2022-12-11 23:00:07,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 366 transitions, 1918 flow [2022-12-11 23:00:07,370 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 366 transitions, 1918 flow [2022-12-11 23:00:07,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2022-12-11 23:00:07,371 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:07,371 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:07,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:07,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 23:00:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1043947094, now seen corresponding path program 1 times [2022-12-11 23:00:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:07,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343233446] [2022-12-11 23:00:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:07,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181551081] [2022-12-11 23:00:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:07,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:07,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:07,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 23:00:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:00:07,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 23:00:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:00:07,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 23:00:07,855 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 23:00:07,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-11 23:00:07,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-12-11 23:00:07,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-11 23:00:07,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-11 23:00:07,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-11 23:00:07,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-11 23:00:07,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-11 23:00:08,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:08,063 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:08,067 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:00:08,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:00:08,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:00:08 BasicIcfg [2022-12-11 23:00:08,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:00:08,147 INFO L158 Benchmark]: Toolchain (without parser) took 7977.02ms. Allocated memory was 212.9MB in the beginning and 511.7MB in the end (delta: 298.8MB). Free memory was 186.3MB in the beginning and 336.4MB in the end (delta: -150.1MB). Peak memory consumption was 148.7MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,147 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 212.9MB. Free memory is still 189.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:00:08,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.42ms. Allocated memory is still 212.9MB. Free memory was 186.3MB in the beginning and 166.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.06ms. Allocated memory is still 212.9MB. Free memory was 166.3MB in the beginning and 163.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,147 INFO L158 Benchmark]: Boogie Preprocessor took 31.02ms. Allocated memory is still 212.9MB. Free memory was 163.7MB in the beginning and 162.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,148 INFO L158 Benchmark]: RCFGBuilder took 371.20ms. Allocated memory is still 212.9MB. Free memory was 162.1MB in the beginning and 144.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,148 INFO L158 Benchmark]: TraceAbstraction took 7161.27ms. Allocated memory was 212.9MB in the beginning and 511.7MB in the end (delta: 298.8MB). Free memory was 143.3MB in the beginning and 336.4MB in the end (delta: -193.1MB). Peak memory consumption was 105.7MB. Max. memory is 8.0GB. [2022-12-11 23:00:08,149 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 212.9MB. Free memory is still 189.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.42ms. Allocated memory is still 212.9MB. Free memory was 186.3MB in the beginning and 166.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.06ms. Allocated memory is still 212.9MB. Free memory was 166.3MB in the beginning and 163.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.02ms. Allocated memory is still 212.9MB. Free memory was 163.7MB in the beginning and 162.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 371.20ms. Allocated memory is still 212.9MB. Free memory was 162.1MB in the beginning and 144.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 7161.27ms. Allocated memory was 212.9MB in the beginning and 511.7MB in the end (delta: 298.8MB). Free memory was 143.3MB in the beginning and 336.4MB in the end (delta: -193.1MB). Peak memory consumption was 105.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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]; VAL [buffer={3:0}] [L683] 0 static unsigned int first; VAL [buffer={3:0}, first=0] [L684] 0 static unsigned int next; VAL [buffer={3:0}, first=0, next=0] [L685] 0 static int buffer_size; VAL [buffer={3:0}, buffer_size=0, first=0, next=0] [L686] 0 _Bool send, receive; VAL [buffer={3:0}, buffer_size=0, first=0, next=0, receive=0, send=0] [L687] 0 pthread_mutex_t m; VAL [buffer={3:0}, buffer_size=0, first=0, m={4:0}, next=0, receive=0, send=0] [L756] 0 pthread_t id1, id2; VAL [buffer={3:0}, buffer_size=0, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=0] [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] EXPR 0 next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] 0 first = next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L758] RET 0 initLog(10) [L759] 0 send=1 VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=1] [L760] 0 receive=0 VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=1] [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] [L723] 1 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [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 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] [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))=3, receive=0, send=1] [L739] 2 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [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 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] [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] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [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] [L740] COND TRUE 2 i<7 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] [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [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 VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] VAL [buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] 2 return buffer[first-1]; VAL [\result=0, buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, removeLogElement()=0, send=0] [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: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.9s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 773 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 773 mSDsluCounter, 614 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 500 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 923 IncrementalHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 114 mSDtfsCounter, 923 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2183occurred in iteration=6, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 248 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 563 ConstructedInterpolants, 6 QuantifiedInterpolants, 2461 SizeOfPredicates, 22 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 5/5 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! [2022-12-11 23:00:08,163 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...