/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:28:27,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:28:27,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:28:27,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:28:27,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:28:27,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:28:27,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:28:27,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:28:27,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:28:27,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:28:27,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:28:27,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:28:27,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:28:27,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:28:27,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:28:27,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:28:27,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:28:27,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:28:27,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:28:27,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:28:27,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:28:27,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:28:27,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:28:27,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:28:27,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:28:27,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:28:27,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:28:27,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:28:27,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:28:27,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:28:27,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:28:27,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:28:27,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:28:27,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:28:27,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:28:27,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:28:27,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:28:27,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:28:27,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:28:27,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:28:27,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:28:27,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:28:27,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:28:27,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:28:27,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:28:27,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:28:27,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:28:27,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:28:27,675 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:28:27,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:28:27,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:28:27,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:28:27,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:27,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:28:27,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:28:27,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:28:27,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:28:27,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:28:27,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:28:27,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:28:27,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:28:27,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:28:27,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:28:27,998 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:28:27,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-05 20:28:28,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:28:29,225 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:28:29,226 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-05 20:28:29,241 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ce72257/9a58121776454cf2a4cb4b2c864afc87/FLAGc40ef35d7 [2022-12-05 20:28:29,253 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ce72257/9a58121776454cf2a4cb4b2c864afc87 [2022-12-05 20:28:29,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:28:29,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:28:29,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:29,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:28:29,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:28:29,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:29,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ce94fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29, skipping insertion in model container [2022-12-05 20:28:29,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:29,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:28:29,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:28:29,810 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] [2022-12-05 20:28:29,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:29,839 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:28:29,867 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] [2022-12-05 20:28:29,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:29,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:29,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:29,974 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:28:29,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29 WrapperNode [2022-12-05 20:28:29,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:29,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:29,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:28:29,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:28:29,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,028 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-05 20:28:30,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:30,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:28:30,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:28:30,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:28:30,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:28:30,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:28:30,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:28:30,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:28:30,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (1/1) ... [2022-12-05 20:28:30,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:30,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:28:30,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:28:30,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:28:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:28:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:28:30,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 20:28:30,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:28:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:28:30,116 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:28:30,313 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:28:30,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:28:30,514 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:28:30,542 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:28:30,543 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:28:30,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:30 BoogieIcfgContainer [2022-12-05 20:28:30,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:28:30,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:28:30,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:28:30,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:28:30,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:28:29" (1/3) ... [2022-12-05 20:28:30,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2545cc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:30, skipping insertion in model container [2022-12-05 20:28:30,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:29" (2/3) ... [2022-12-05 20:28:30,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2545cc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:30, skipping insertion in model container [2022-12-05 20:28:30,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:30" (3/3) ... [2022-12-05 20:28:30,560 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-05 20:28:30,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:28:30,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-05 20:28:30,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:28:30,629 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-05 20:28:30,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 196 flow [2022-12-05 20:28:30,721 INFO L130 PetriNetUnfolder]: 4/105 cut-off events. [2022-12-05 20:28:30,721 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:28:30,724 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. [2022-12-05 20:28:30,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 196 flow [2022-12-05 20:28:30,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 77 transitions, 160 flow [2022-12-05 20:28:30,728 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:28:30,746 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 77 transitions, 160 flow [2022-12-05 20:28:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 77 transitions, 160 flow [2022-12-05 20:28:30,770 INFO L130 PetriNetUnfolder]: 1/77 cut-off events. [2022-12-05 20:28:30,770 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:28:30,771 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. [2022-12-05 20:28:30,772 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 77 transitions, 160 flow [2022-12-05 20:28:30,773 INFO L188 LiptonReduction]: Number of co-enabled transitions 182 [2022-12-05 20:28:30,839 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:30,840 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:30,842 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:30,844 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,113 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,113 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,115 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,116 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,755 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,756 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,758 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,759 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,955 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,955 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:31,957 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:31,958 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:32,845 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:32,846 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:32,847 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:32,848 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:33,312 INFO L203 LiptonReduction]: Total number of compositions: 68 [2022-12-05 20:28:33,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:28:33,327 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;@4e5345e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:28:33,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 20:28:33,328 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-05 20:28:33,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:28:33,328 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:33,328 INFO L213 CegarLoopForPetriNet]: trace histogram [1] [2022-12-05 20:28:33,329 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)] === [2022-12-05 20:28:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 349, now seen corresponding path program 1 times [2022-12-05 20:28:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322132450] [2022-12-05 20:28:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:33,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322132450] [2022-12-05 20:28:33,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322132450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:33,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:33,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-05 20:28:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019006596] [2022-12-05 20:28:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 20:28:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 20:28:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 20:28:33,480 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 11 [2022-12-05 20:28:33,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 28 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) [2022-12-05 20:28:33,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:33,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 11 [2022-12-05 20:28:33,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:33,498 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2022-12-05 20:28:33,498 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:28:33,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 14 events. 3/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 22 event pairs, 3 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 21. Up to 14 conditions per place. [2022-12-05 20:28:33,499 INFO L137 encePairwiseOnDemand]: 8/11 looper letters, 5 selfloop transitions, 0 changer transitions 2/8 dead transitions. [2022-12-05 20:28:33,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 36 flow [2022-12-05 20:28:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 20:28:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 20:28:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 12 transitions. [2022-12-05 20:28:33,507 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-05 20:28:33,508 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 28 flow. Second operand 2 states and 12 transitions. [2022-12-05 20:28:33,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 36 flow [2022-12-05 20:28:33,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 32 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:28:33,510 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 13 flow [2022-12-05 20:28:33,512 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=13, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2022-12-05 20:28:33,514 INFO L294 CegarLoopForPetriNet]: 15 programPoint places, -4 predicate places. [2022-12-05 20:28:33,514 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 13 flow [2022-12-05 20:28:33,514 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) [2022-12-05 20:28:33,514 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:33,514 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-05 20:28:33,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:28:33,515 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)] === [2022-12-05 20:28:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 10759821, now seen corresponding path program 1 times [2022-12-05 20:28:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:33,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236449244] [2022-12-05 20:28:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:33,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236449244] [2022-12-05 20:28:33,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236449244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:33,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:33,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:28:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349817788] [2022-12-05 20:28:33,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:33,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:28:33,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:28:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:28:33,665 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 11 [2022-12-05 20:28:33,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 6 transitions, 13 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) [2022-12-05 20:28:33,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:33,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 11 [2022-12-05 20:28:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:33,694 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-05 20:28:33,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:28:33,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 2/10 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-12-05 20:28:33,695 INFO L137 encePairwiseOnDemand]: 8/11 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2022-12-05 20:28:33,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 27 flow [2022-12-05 20:28:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:28:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:28:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-12-05 20:28:33,696 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2022-12-05 20:28:33,696 INFO L175 Difference]: Start difference. First operand has 11 places, 6 transitions, 13 flow. Second operand 3 states and 10 transitions. [2022-12-05 20:28:33,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 27 flow [2022-12-05 20:28:33,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:28:33,697 INFO L231 Difference]: Finished difference. Result has 12 places, 5 transitions, 19 flow [2022-12-05 20:28:33,697 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=12, PETRI_TRANSITIONS=5} [2022-12-05 20:28:33,698 INFO L294 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2022-12-05 20:28:33,698 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 5 transitions, 19 flow [2022-12-05 20:28:33,698 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) [2022-12-05 20:28:33,698 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:33,698 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-05 20:28:33,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:28:33,698 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)] === [2022-12-05 20:28:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 333557551, now seen corresponding path program 1 times [2022-12-05 20:28:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:33,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548211545] [2022-12-05 20:28:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:28:33,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 20:28:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:28:33,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 20:28:33,757 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 20:28:33,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 20:28:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-05 20:28:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-05 20:28:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-05 20:28:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 20:28:33,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:28:33,760 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-05 20:28:33,763 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:28:33,763 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:28:33,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:28:33 BasicIcfg [2022-12-05 20:28:33,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:28:33,786 INFO L158 Benchmark]: Toolchain (without parser) took 4525.01ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 175.3MB in the beginning and 197.7MB in the end (delta: -22.3MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. [2022-12-05 20:28:33,786 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:28:33,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 713.01ms. Allocated memory is still 202.4MB. Free memory was 174.9MB in the beginning and 156.3MB in the end (delta: 18.6MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. [2022-12-05 20:28:33,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.06ms. Allocated memory is still 202.4MB. Free memory was 156.3MB in the beginning and 153.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 20:28:33,787 INFO L158 Benchmark]: Boogie Preprocessor took 30.61ms. Allocated memory is still 202.4MB. Free memory was 153.2MB in the beginning and 150.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 20:28:33,787 INFO L158 Benchmark]: RCFGBuilder took 486.45ms. Allocated memory is still 202.4MB. Free memory was 150.6MB in the beginning and 130.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 20:28:33,788 INFO L158 Benchmark]: TraceAbstraction took 3230.53ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 129.1MB in the beginning and 197.7MB in the end (delta: -68.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:28:33,789 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 127.9MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 713.01ms. Allocated memory is still 202.4MB. Free memory was 174.9MB in the beginning and 156.3MB in the end (delta: 18.6MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.06ms. Allocated memory is still 202.4MB. Free memory was 156.3MB in the beginning and 153.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.61ms. Allocated memory is still 202.4MB. Free memory was 153.2MB in the beginning and 150.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 486.45ms. Allocated memory is still 202.4MB. Free memory was 150.6MB in the beginning and 130.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 3230.53ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 129.1MB in the beginning and 197.7MB in the end (delta: -68.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 80 PlacesBefore, 15 PlacesAfterwards, 77 TransitionsBefore, 11 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 50 TrivialYvCompositions, 16 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 116, independent: 105, independent conditional: 105, independent unconditional: 0, dependent: 11, dependent conditional: 11, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 116, independent: 105, independent conditional: 0, independent unconditional: 105, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 116, independent: 105, independent conditional: 0, independent unconditional: 105, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 116, independent: 105, independent conditional: 0, independent unconditional: 105, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 102, independent: 96, independent conditional: 0, independent unconditional: 96, 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: 102, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 116, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 102, unknown conditional: 0, unknown unconditional: 102] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, 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: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 18 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=28occurred in iteration=0, 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: No data available, 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! [2022-12-05 20:28:33,809 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...