/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/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 21:05:02,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 21:05:02,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 21:05:02,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 21:05:02,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 21:05:02,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 21:05:02,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 21:05:02,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 21:05:02,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 21:05:02,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 21:05:02,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 21:05:02,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 21:05:02,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 21:05:02,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 21:05:02,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 21:05:02,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 21:05:02,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 21:05:02,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 21:05:02,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 21:05:02,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 21:05:02,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 21:05:02,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 21:05:02,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 21:05:02,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 21:05:02,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 21:05:02,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 21:05:02,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 21:05:02,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 21:05:02,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 21:05:02,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 21:05:02,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 21:05:02,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 21:05:02,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 21:05:02,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 21:05:02,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 21:05:02,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 21:05:02,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 21:05:02,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 21:05:02,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 21:05:02,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 21:05:02,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 21:05:02,990 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 21:05:03,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 21:05:03,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 21:05:03,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 21:05:03,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 21:05:03,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 21:05:03,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 21:05:03,018 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 21:05:03,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 21:05:03,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 21:05:03,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 21:05:03,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 21:05:03,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 21:05:03,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 21:05:03,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 21:05:03,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:05:03,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 21:05:03,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 21:05:03,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 21:05:03,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 21:05:03,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 21:05:03,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 21:05:03,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 21:05:03,392 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 21:05:03,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-11 21:05:04,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 21:05:04,880 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 21:05:04,880 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-11 21:05:04,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c062f0d6e/fd75b14a1c13433eaf876f7723d8e1ca/FLAG470ad7a39 [2022-12-11 21:05:04,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c062f0d6e/fd75b14a1c13433eaf876f7723d8e1ca [2022-12-11 21:05:04,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 21:05:04,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 21:05:04,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 21:05:04,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 21:05:04,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 21:05:04,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:05:04" (1/1) ... [2022-12-11 21:05:04,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1d613f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:04, skipping insertion in model container [2022-12-11 21:05:04,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:05:04" (1/1) ... [2022-12-11 21:05:04,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 21:05:04,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 21:05:05,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2022-12-11 21:05:05,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:05:05,375 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 21:05:05,428 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] [2022-12-11 21:05:05,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:05:05,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:05:05,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:05:05,526 INFO L208 MainTranslator]: Completed translation [2022-12-11 21:05:05,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05 WrapperNode [2022-12-11 21:05:05,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 21:05:05,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 21:05:05,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 21:05:05,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 21:05:05,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,572 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-11 21:05:05,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 21:05:05,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 21:05:05,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 21:05:05,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 21:05:05,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 21:05:05,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 21:05:05,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 21:05:05,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 21:05:05,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (1/1) ... [2022-12-11 21:05:05,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:05:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:05:05,637 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 21:05:05,690 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 21:05:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-11 21:05:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 21:05:05,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 21:05:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 21:05:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 21:05:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 21:05:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 21:05:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 21:05:05,706 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 21:05:05,894 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 21:05:05,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 21:05:06,077 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 21:05:06,094 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 21:05:06,094 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 21:05:06,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:05:06 BoogieIcfgContainer [2022-12-11 21:05:06,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 21:05:06,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 21:05:06,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 21:05:06,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 21:05:06,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 09:05:04" (1/3) ... [2022-12-11 21:05:06,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:05:06, skipping insertion in model container [2022-12-11 21:05:06,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:05:05" (2/3) ... [2022-12-11 21:05:06,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:05:06, skipping insertion in model container [2022-12-11 21:05:06,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:05:06" (3/3) ... [2022-12-11 21:05:06,103 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-11 21:05:06,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 21:05:06,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-11 21:05:06,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 21:05:06,177 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-11 21:05:06,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 196 flow [2022-12-11 21:05:06,252 INFO L130 PetriNetUnfolder]: 4/105 cut-off events. [2022-12-11 21:05:06,252 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 21:05:06,255 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. [2022-12-11 21:05:06,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 196 flow [2022-12-11 21:05:06,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 77 transitions, 160 flow [2022-12-11 21:05:06,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 21:05:06,276 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;@575dced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 21:05:06,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 21:05:06,286 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2022-12-11 21:05:06,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 21:05:06,286 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:05:06,287 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] [2022-12-11 21:05:06,287 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)] === [2022-12-11 21:05:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:05:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1666061978, now seen corresponding path program 1 times [2022-12-11 21:05:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:05:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349406008] [2022-12-11 21:05:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:05:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:05:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:05:06,773 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 21:05:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:05:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349406008] [2022-12-11 21:05:06,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349406008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:05:06,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:05:06,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 21:05:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842596602] [2022-12-11 21:05:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:05:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 21:05:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:05:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 21:05:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 21:05:06,827 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-12-11 21:05:06,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 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 21:05:06,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:05:06,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-12-11 21:05:06,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:05:06,924 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-12-11 21:05:06,924 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-12-11 21:05:06,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 85 events. 3/85 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 1 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 42. Up to 11 conditions per place. [2022-12-11 21:05:06,925 INFO L137 encePairwiseOnDemand]: 82/94 looper letters, 14 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2022-12-11 21:05:06,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 208 flow [2022-12-11 21:05:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:05:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:05:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2022-12-11 21:05:06,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.709726443768997 [2022-12-11 21:05:06,940 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2022-12-11 21:05:06,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 76 transitions, 208 flow [2022-12-11 21:05:06,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 208 flow [2022-12-11 21:05:06,943 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 208 flow [2022-12-11 21:05:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 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 21:05:06,943 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:05:06,943 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] [2022-12-11 21:05:06,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 21:05:06,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-11 21:05:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:05:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash 323971760, now seen corresponding path program 1 times [2022-12-11 21:05:06,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:05:06,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209501154] [2022-12-11 21:05:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:05:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:05:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:05:07,054 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 21:05:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:05:07,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209501154] [2022-12-11 21:05:07,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209501154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:05:07,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:05:07,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 21:05:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59355128] [2022-12-11 21:05:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:05:07,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 21:05:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:05:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 21:05:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 21:05:07,057 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-12-11 21:05:07,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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 21:05:07,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:05:07,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-12-11 21:05:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:05:07,106 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-12-11 21:05:07,110 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-11 21:05:07,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 88 events. 3/88 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 57. Up to 12 conditions per place. [2022-12-11 21:05:07,114 INFO L137 encePairwiseOnDemand]: 84/94 looper letters, 16 selfloop transitions, 5 changer transitions 6/75 dead transitions. [2022-12-11 21:05:07,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 256 flow [2022-12-11 21:05:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:05:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:05:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 465 transitions. [2022-12-11 21:05:07,116 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7066869300911854 [2022-12-11 21:05:07,117 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2022-12-11 21:05:07,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 75 transitions, 256 flow [2022-12-11 21:05:07,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 228 flow [2022-12-11 21:05:07,118 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 228 flow [2022-12-11 21:05:07,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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 21:05:07,118 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:05:07,118 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] [2022-12-11 21:05:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 21:05:07,118 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)] === [2022-12-11 21:05:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:05:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1368429562, now seen corresponding path program 1 times [2022-12-11 21:05:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:05:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112989474] [2022-12-11 21:05:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:05:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:05:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:05:07,212 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 21:05:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:05:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112989474] [2022-12-11 21:05:07,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112989474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:05:07,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:05:07,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 21:05:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238809284] [2022-12-11 21:05:07,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:05:07,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:05:07,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:05:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:05:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 21:05:07,218 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2022-12-11 21:05:07,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 21:05:07,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:05:07,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2022-12-11 21:05:07,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:05:07,268 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-11 21:05:07,269 INFO L131 PetriNetUnfolder]: For 55/66 co-relation queries the response was YES. [2022-12-11 21:05:07,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 89 events. 2/89 cut-off events. For 55/66 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 66. Up to 13 conditions per place. [2022-12-11 21:05:07,269 INFO L137 encePairwiseOnDemand]: 89/94 looper letters, 11 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2022-12-11 21:05:07,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 277 flow [2022-12-11 21:05:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:05:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:05:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2022-12-11 21:05:07,271 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8546099290780141 [2022-12-11 21:05:07,271 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2022-12-11 21:05:07,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 71 transitions, 277 flow [2022-12-11 21:05:07,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 277 flow [2022-12-11 21:05:07,272 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 277 flow [2022-12-11 21:05:07,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 21:05:07,273 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:05:07,273 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] [2022-12-11 21:05:07,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 21:05:07,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-11 21:05:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:05:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash 839943416, now seen corresponding path program 1 times [2022-12-11 21:05:07,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:05:07,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718387460] [2022-12-11 21:05:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:05:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:05:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 21:05:07,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 21:05:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 21:05:07,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 21:05:07,338 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 21:05:07,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-11 21:05:07,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-11 21:05:07,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-11 21:05:07,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-11 21:05:07,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-11 21:05:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 21:05:07,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-11 21:05:07,348 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 21:05:07,348 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 21:05:07,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 09:05:07 BasicIcfg [2022-12-11 21:05:07,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 21:05:07,386 INFO L158 Benchmark]: Toolchain (without parser) took 2463.79ms. Allocated memory was 217.1MB in the beginning and 272.6MB in the end (delta: 55.6MB). Free memory was 190.2MB in the beginning and 125.3MB in the end (delta: 65.0MB). Peak memory consumption was 120.5MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,388 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 217.1MB. Free memory was 192.9MB in the beginning and 192.8MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 21:05:07,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.50ms. Allocated memory is still 217.1MB. Free memory was 189.7MB in the beginning and 134.6MB in the end (delta: 55.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.48ms. Allocated memory is still 217.1MB. Free memory was 134.1MB in the beginning and 131.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,390 INFO L158 Benchmark]: Boogie Preprocessor took 26.64ms. Allocated memory is still 217.1MB. Free memory was 131.5MB in the beginning and 128.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,390 INFO L158 Benchmark]: RCFGBuilder took 496.18ms. Allocated memory is still 217.1MB. Free memory was 128.9MB in the beginning and 107.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,391 INFO L158 Benchmark]: TraceAbstraction took 1287.48ms. Allocated memory was 217.1MB in the beginning and 272.6MB in the end (delta: 55.6MB). Free memory was 106.3MB in the beginning and 125.3MB in the end (delta: -18.9MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-12-11 21:05:07,395 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 217.1MB. Free memory was 192.9MB in the beginning and 192.8MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 603.50ms. Allocated memory is still 217.1MB. Free memory was 189.7MB in the beginning and 134.6MB in the end (delta: 55.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.48ms. Allocated memory is still 217.1MB. Free memory was 134.1MB in the beginning and 131.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.64ms. Allocated memory is still 217.1MB. Free memory was 131.5MB in the beginning and 128.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 496.18ms. Allocated memory is still 217.1MB. Free memory was 128.9MB in the beginning and 107.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1287.48ms. Allocated memory was 217.1MB in the beginning and 272.6MB in the end (delta: 55.6MB). Free memory was 106.3MB in the beginning and 125.3MB in the end (delta: -18.9MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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; VAL [t1={3:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={4:0}, t1={3:0}] [L1698] 0 int pdev; VAL [mutex={4:0}, pdev=0, t1={3:0}] [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={4:0}, pdev=1, t1={3:0}] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, mutex={4:0}, pdev=1, t1={3:0}] [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 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 40 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-12-11 21:05:07,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...