/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:44:16,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:44:16,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:44:16,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:44:16,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:44:16,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:44:16,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:44:16,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:44:16,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:44:16,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:44:16,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:44:16,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:44:16,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:44:16,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:44:16,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:44:16,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:44:16,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:44:16,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:44:16,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:44:16,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:44:16,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:44:16,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:44:16,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:44:16,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:44:16,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:44:16,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:44:16,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:44:16,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:44:16,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:44:16,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:44:16,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:44:16,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:44:16,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:44:16,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:44:16,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:44:16,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:44:16,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:44:16,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:44:16,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:44:16,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:44:16,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:44:16,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 18:44:16,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:44:16,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:44:16,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:44:16,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:44:16,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:44:16,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:44:16,371 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:44:16,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:44:16,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:44:16,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:44:16,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:44:16,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:44:16,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:44:16,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:44:16,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:44:16,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:44:16,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:44:16,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:44:16,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:44:16,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:44:16,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:44:16,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:44:16,656 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:44:16,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-12 18:44:17,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:44:17,935 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:44:17,935 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-12 18:44:17,954 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b8b2bf1/11f0b675118a4ec1a5df5c6b1b277960/FLAG3aa460ccb [2022-12-12 18:44:17,965 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b8b2bf1/11f0b675118a4ec1a5df5c6b1b277960 [2022-12-12 18:44:17,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:44:17,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:44:17,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:44:17,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:44:17,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:44:17,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:44:17" (1/1) ... [2022-12-12 18:44:17,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc16f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:17, skipping insertion in model container [2022-12-12 18:44:17,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:44:17" (1/1) ... [2022-12-12 18:44:17,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:44:18,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:44:18,562 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2022-12-12 18:44:18,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:44:18,593 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:44:18,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2022-12-12 18:44:18,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:18,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:18,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:44:18,721 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:44:18,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18 WrapperNode [2022-12-12 18:44:18,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:44:18,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:44:18,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:44:18,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:44:18,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,778 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-12 18:44:18,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:44:18,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:44:18,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:44:18,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:44:18,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:44:18,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:44:18,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:44:18,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:44:18,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (1/1) ... [2022-12-12 18:44:18,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:44:18,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:44:18,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 18:44:18,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 18:44:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:44:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:44:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:44:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 18:44:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:44:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:44:18,895 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:44:19,083 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:44:19,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:44:19,202 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:44:19,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:44:19,220 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:44:19,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:44:19 BoogieIcfgContainer [2022-12-12 18:44:19,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:44:19,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:44:19,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:44:19,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:44:19,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:44:17" (1/3) ... [2022-12-12 18:44:19,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66994fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:44:19, skipping insertion in model container [2022-12-12 18:44:19,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:18" (2/3) ... [2022-12-12 18:44:19,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66994fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:44:19, skipping insertion in model container [2022-12-12 18:44:19,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:44:19" (3/3) ... [2022-12-12 18:44:19,228 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-12 18:44:19,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:44:19,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 18:44:19,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:44:19,276 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 18:44:19,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 196 flow [2022-12-12 18:44:19,336 INFO L130 PetriNetUnfolder]: 4/105 cut-off events. [2022-12-12 18:44:19,336 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:44:19,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 4/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 62. Up to 3 conditions per place. [2022-12-12 18:44:19,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 196 flow [2022-12-12 18:44:19,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 77 transitions, 160 flow [2022-12-12 18:44:19,343 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:44:19,354 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 77 transitions, 160 flow [2022-12-12 18:44:19,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 77 transitions, 160 flow [2022-12-12 18:44:19,377 INFO L130 PetriNetUnfolder]: 1/77 cut-off events. [2022-12-12 18:44:19,377 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:44:19,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 1/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 18:44:19,380 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 77 transitions, 160 flow [2022-12-12 18:44:19,381 INFO L226 LiptonReduction]: Number of co-enabled transitions 182 [2022-12-12 18:44:22,001 INFO L241 LiptonReduction]: Total number of compositions: 68 [2022-12-12 18:44:22,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:44:22,017 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;@37260753, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:44:22,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 18:44:22,018 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-12 18:44:22,018 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:44:22,019 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:22,019 INFO L214 CegarLoopForPetriNet]: trace histogram [1] [2022-12-12 18:44:22,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 18:44:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash 359, now seen corresponding path program 1 times [2022-12-12 18:44:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:22,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494590359] [2022-12-12 18:44:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494590359] [2022-12-12 18:44:22,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494590359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:22,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:22,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-12 18:44:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56923201] [2022-12-12 18:44:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:22,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 18:44:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 18:44:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 18:44:22,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-12 18:44:22,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:44:22,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:22,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-12 18:44:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:22,209 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2022-12-12 18:44:22,209 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:44:22,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 49 events. 18/49 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 180 event pairs, 18 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 91. Up to 49 conditions per place. [2022-12-12 18:44:22,210 INFO L137 encePairwiseOnDemand]: 13/16 looper letters, 10 selfloop transitions, 0 changer transitions 2/13 dead transitions. [2022-12-12 18:44:22,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 56 flow [2022-12-12 18:44:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 18:44:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 18:44:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 17 transitions. [2022-12-12 18:44:22,219 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-12-12 18:44:22,222 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2022-12-12 18:44:22,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 13 transitions, 56 flow [2022-12-12 18:44:22,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 11 transitions, 45 flow [2022-12-12 18:44:22,225 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 45 flow [2022-12-12 18:44:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:44:22,225 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:22,225 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 18:44:22,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:44:22,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 18:44:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 11117313, now seen corresponding path program 1 times [2022-12-12 18:44:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:22,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942591971] [2022-12-12 18:44:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942591971] [2022-12-12 18:44:22,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942591971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:22,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:22,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:44:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110850466] [2022-12-12 18:44:22,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:44:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:44:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:44:22,373 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-12 18:44:22,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:44:22,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:22,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-12 18:44:22,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:22,396 INFO L130 PetriNetUnfolder]: 2/26 cut-off events. [2022-12-12 18:44:22,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:44:22,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 26 events. 2/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 102 event pairs, 0 based on Foata normal form. 7/23 useless extension candidates. Maximal degree in co-relation 70. Up to 26 conditions per place. [2022-12-12 18:44:22,397 INFO L137 encePairwiseOnDemand]: 10/16 looper letters, 3 selfloop transitions, 5 changer transitions 9/17 dead transitions. [2022-12-12 18:44:22,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 101 flow [2022-12-12 18:44:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:44:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:44:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-12 18:44:22,398 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-12 18:44:22,398 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2022-12-12 18:44:22,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 17 transitions, 101 flow [2022-12-12 18:44:22,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 8 transitions, 51 flow [2022-12-12 18:44:22,399 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 51 flow [2022-12-12 18:44:22,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:44:22,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:22,399 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 18:44:22,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:44:22,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 18:44:22,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:22,400 INFO L85 PathProgramCache]: Analyzing trace with hash 344640175, now seen corresponding path program 1 times [2022-12-12 18:44:22,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:22,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859605266] [2022-12-12 18:44:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:22,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 18:44:22,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 18:44:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 18:44:22,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 18:44:22,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 18:44:22,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 18:44:22,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-12 18:44:22,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-12 18:44:22,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-12 18:44:22,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 18:44:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:44:22,468 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-12 18:44:22,473 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:44:22,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:44:22,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:44:22 BasicIcfg [2022-12-12 18:44:22,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:44:22,497 INFO L158 Benchmark]: Toolchain (without parser) took 4525.77ms. Allocated memory was 196.1MB in the beginning and 273.7MB in the end (delta: 77.6MB). Free memory was 170.3MB in the beginning and 105.5MB in the end (delta: 64.7MB). Peak memory consumption was 143.4MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,497 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:44:22,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 752.26ms. Allocated memory is still 196.1MB. Free memory was 170.3MB in the beginning and 114.2MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.24ms. Allocated memory is still 196.1MB. Free memory was 114.2MB in the beginning and 111.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,498 INFO L158 Benchmark]: Boogie Preprocessor took 22.28ms. Allocated memory is still 196.1MB. Free memory was 111.0MB in the beginning and 108.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,498 INFO L158 Benchmark]: RCFGBuilder took 420.35ms. Allocated memory is still 196.1MB. Free memory was 108.4MB in the beginning and 86.9MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,500 INFO L158 Benchmark]: TraceAbstraction took 3269.80ms. Allocated memory was 196.1MB in the beginning and 273.7MB in the end (delta: 77.6MB). Free memory was 85.9MB in the beginning and 105.5MB in the end (delta: -19.7MB). Peak memory consumption was 58.5MB. Max. memory is 8.0GB. [2022-12-12 18:44:22,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 752.26ms. Allocated memory is still 196.1MB. Free memory was 170.3MB in the beginning and 114.2MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.24ms. Allocated memory is still 196.1MB. Free memory was 114.2MB in the beginning and 111.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.28ms. Allocated memory is still 196.1MB. Free memory was 111.0MB in the beginning and 108.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 420.35ms. Allocated memory is still 196.1MB. Free memory was 108.4MB in the beginning and 86.9MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3269.80ms. Allocated memory was 196.1MB in the beginning and 273.7MB in the end (delta: 77.6MB). Free memory was 85.9MB in the beginning and 105.5MB in the end (delta: -19.7MB). Peak memory consumption was 58.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 80 PlacesBefore, 20 PlacesAfterwards, 77 TransitionsBefore, 16 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 50 TrivialYvCompositions, 16 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 254, independent: 242, independent conditional: 242, independent unconditional: 0, dependent: 12, dependent conditional: 12, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 254, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 254, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 254, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 144, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 144, independent: 134, independent conditional: 0, independent unconditional: 134, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 254, independent: 104, independent conditional: 0, independent unconditional: 104, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 144, unknown conditional: 0, unknown unconditional: 144] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 309, Positive conditional cache size: 0, Positive unconditional cache size: 309, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 61 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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! [2022-12-12 18:44:22,568 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...