/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 -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 19:09:48,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:09:48,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:09:48,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:09:48,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:09:48,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:09:48,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:09:48,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:09:48,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:09:48,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:09:48,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:09:48,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:09:48,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:09:48,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:09:48,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:09:48,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:09:48,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:09:48,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:09:48,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:09:48,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:09:48,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:09:48,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:09:48,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:09:48,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:09:48,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:09:48,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:09:48,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:09:48,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:09:48,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:09:48,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:09:48,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:09:48,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:09:48,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:09:48,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:09:48,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:09:48,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:09:48,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:09:48,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:09:48,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:09:48,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:09:48,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:09:48,943 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 19:09:48,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:09:48,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:09:48,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:09:48,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:09:48,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:09:48,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:09:48,978 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:09:48,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:09:48,978 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:09:48,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:09:48,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:09:48,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:09:48,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:09:48,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:09:48,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:09:48,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:09:48,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:09:48,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:09:48,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:09:48,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:09:48,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:09:48,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:09:49,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:09:49,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:09:49,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:09:49,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:09:49,346 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:09:49,347 INFO L432 ainManager$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 19:09:50,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:09:50,898 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:09:50,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-12-11 19:09:50,921 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15c0b493/7da593c669a741e297a95454deeee494/FLAGe285f4bbc [2022-12-11 19:09:50,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15c0b493/7da593c669a741e297a95454deeee494 [2022-12-11 19:09:50,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:09:50,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:09:50,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:09:50,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:09:50,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:09:50,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:09:50" (1/1) ... [2022-12-11 19:09:50,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6c59eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:50, skipping insertion in model container [2022-12-11 19:09:50,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:09:50" (1/1) ... [2022-12-11 19:09:50,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:09:51,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:09:51,576 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 19:09:51,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:09:51,607 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:09:51,665 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 19:09:51,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:09:51,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:09:51,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:09:51,803 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:09:51,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51 WrapperNode [2022-12-11 19:09:51,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:09:51,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:09:51,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:09:51,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:09:51,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,861 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-11 19:09:51,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:09:51,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:09:51,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:09:51,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:09:51,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:09:51,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:09:51,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:09:51,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:09:51,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (1/1) ... [2022-12-11 19:09:51,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:09:51,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:09:51,923 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 19:09:51,937 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 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:09:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-11 19:09:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:09:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:09:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:09:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:09:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:09:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:09:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:09:51,963 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 19:09:52,271 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:09:52,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:09:52,434 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:09:52,457 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:09:52,457 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 19:09:52,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:09:52 BoogieIcfgContainer [2022-12-11 19:09:52,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:09:52,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:09:52,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:09:52,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:09:52,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:09:50" (1/3) ... [2022-12-11 19:09:52,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6239f26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:09:52, skipping insertion in model container [2022-12-11 19:09:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:09:51" (2/3) ... [2022-12-11 19:09:52,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6239f26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:09:52, skipping insertion in model container [2022-12-11 19:09:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:09:52" (3/3) ... [2022-12-11 19:09:52,473 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-11 19:09:52,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:09:52,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-11 19:09:52,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:09:52,544 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-11 19:09:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 196 flow [2022-12-11 19:09:52,631 INFO L130 PetriNetUnfolder]: 4/105 cut-off events. [2022-12-11 19:09:52,632 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 19:09:52,635 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 19:09:52,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 196 flow [2022-12-11 19:09:52,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 77 transitions, 160 flow [2022-12-11 19:09:52,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:09:52,660 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;@3cef93c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:09:52,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 19:09:52,672 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2022-12-11 19:09:52,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 19:09:52,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:09:52,674 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 19:09:52,674 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 19:09:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:09:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1666061978, now seen corresponding path program 1 times [2022-12-11 19:09:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:09:52,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416359060] [2022-12-11 19:09:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:09:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:09:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:09:53,227 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 19:09:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:09:53,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416359060] [2022-12-11 19:09:53,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416359060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:09:53,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:09:53,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:09:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071115372] [2022-12-11 19:09:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:09:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:09:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:09:53,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:09:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:09:53,263 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-12-11 19:09:53,268 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 19:09:53,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:09:53,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-12-11 19:09:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:09:53,357 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-12-11 19:09:53,357 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-12-11 19:09:53,357 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 19:09:53,358 INFO L137 encePairwiseOnDemand]: 82/94 looper letters, 14 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2022-12-11 19:09:53,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 208 flow [2022-12-11 19:09:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:09:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:09:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2022-12-11 19:09:53,371 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.709726443768997 [2022-12-11 19:09:53,372 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 160 flow. Second operand 7 states and 467 transitions. [2022-12-11 19:09:53,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 208 flow [2022-12-11 19:09:53,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:09:53,380 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 182 flow [2022-12-11 19:09:53,382 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2022-12-11 19:09:53,387 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-12-11 19:09:53,387 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 182 flow [2022-12-11 19:09:53,388 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 19:09:53,388 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:09:53,389 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 19:09:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:09:53,389 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 19:09:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:09:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 323971760, now seen corresponding path program 1 times [2022-12-11 19:09:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:09:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106676615] [2022-12-11 19:09:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:09:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:09:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:09:53,564 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 19:09:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:09:53,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106676615] [2022-12-11 19:09:53,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106676615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:09:53,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:09:53,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:09:53,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487636409] [2022-12-11 19:09:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:09:53,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:09:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:09:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:09:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:09:53,571 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-12-11 19:09:53,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 182 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 19:09:53,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:09:53,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-12-11 19:09:53,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:09:53,677 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-12-11 19:09:53,677 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-12-11 19:09:53,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 88 events. 3/88 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2022-12-11 19:09:53,681 INFO L137 encePairwiseOnDemand]: 84/94 looper letters, 16 selfloop transitions, 5 changer transitions 6/75 dead transitions. [2022-12-11 19:09:53,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 236 flow [2022-12-11 19:09:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:09:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:09:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 465 transitions. [2022-12-11 19:09:53,690 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7066869300911854 [2022-12-11 19:09:53,690 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 182 flow. Second operand 7 states and 465 transitions. [2022-12-11 19:09:53,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 236 flow [2022-12-11 19:09:53,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 218 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-11 19:09:53,694 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 156 flow [2022-12-11 19:09:53,694 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2022-12-11 19:09:53,694 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, 1 predicate places. [2022-12-11 19:09:53,695 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 156 flow [2022-12-11 19:09:53,695 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 19:09:53,695 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:09:53,695 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 19:09:53,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:09:53,696 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 19:09:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:09:53,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1368429562, now seen corresponding path program 1 times [2022-12-11 19:09:53,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:09:53,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474736588] [2022-12-11 19:09:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:09:53,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:09:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:09:53,795 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 19:09:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:09:53,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474736588] [2022-12-11 19:09:53,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474736588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:09:53,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:09:53,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 19:09:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527163284] [2022-12-11 19:09:53,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:09:53,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:09:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:09:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:09:53,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:09:53,800 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2022-12-11 19:09:53,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 156 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 19:09:53,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:09:53,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2022-12-11 19:09:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:09:53,846 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-11 19:09:53,846 INFO L131 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2022-12-11 19:09:53,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 89 events. 2/89 cut-off events. For 7/10 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 24. Up to 13 conditions per place. [2022-12-11 19:09:53,847 INFO L137 encePairwiseOnDemand]: 89/94 looper letters, 11 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2022-12-11 19:09:53,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 197 flow [2022-12-11 19:09:53,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:09:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:09:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2022-12-11 19:09:53,849 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8546099290780141 [2022-12-11 19:09:53,849 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 156 flow. Second operand 3 states and 241 transitions. [2022-12-11 19:09:53,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 197 flow [2022-12-11 19:09:53,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:09:53,852 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 176 flow [2022-12-11 19:09:53,852 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2022-12-11 19:09:53,853 INFO L295 CegarLoopForPetriNet]: 80 programPoint places, -7 predicate places. [2022-12-11 19:09:53,854 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 176 flow [2022-12-11 19:09:53,855 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 19:09:53,855 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:09:53,855 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 19:09:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:09:53,856 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 19:09:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:09:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 839943416, now seen corresponding path program 1 times [2022-12-11 19:09:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:09:53,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397461812] [2022-12-11 19:09:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:09:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:09:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 19:09:53,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 19:09:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 19:09:53,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 19:09:53,964 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 19:09:53,965 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-11 19:09:53,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-11 19:09:53,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-11 19:09:53,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-11 19:09:53,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-11 19:09:53,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:09:53,970 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-11 19:09:53,975 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 19:09:53,975 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 19:09:54,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 07:09:54 BasicIcfg [2022-12-11 19:09:54,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 19:09:54,022 INFO L158 Benchmark]: Toolchain (without parser) took 3077.07ms. Allocated memory was 206.6MB in the beginning and 284.2MB in the end (delta: 77.6MB). Free memory was 171.9MB in the beginning and 246.5MB in the end (delta: -74.6MB). Peak memory consumption was 3.0MB. Max. memory is 8.0GB. [2022-12-11 19:09:54,027 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 206.6MB. Free memory was 184.1MB in the beginning and 184.0MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:09:54,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 855.99ms. Allocated memory is still 206.6MB. Free memory was 171.3MB in the beginning and 115.2MB in the end (delta: 56.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2022-12-11 19:09:54,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.56ms. Allocated memory is still 206.6MB. Free memory was 115.2MB in the beginning and 112.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 19:09:54,029 INFO L158 Benchmark]: Boogie Preprocessor took 33.85ms. Allocated memory is still 206.6MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:09:54,030 INFO L158 Benchmark]: RCFGBuilder took 567.85ms. Allocated memory is still 206.6MB. Free memory was 110.0MB in the beginning and 89.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-11 19:09:54,030 INFO L158 Benchmark]: TraceAbstraction took 1554.04ms. Allocated memory was 206.6MB in the beginning and 284.2MB in the end (delta: 77.6MB). Free memory was 88.0MB in the beginning and 246.5MB in the end (delta: -158.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:09:54,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 206.6MB. Free memory was 184.1MB in the beginning and 184.0MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 855.99ms. Allocated memory is still 206.6MB. Free memory was 171.3MB in the beginning and 115.2MB in the end (delta: 56.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.56ms. Allocated memory is still 206.6MB. Free memory was 115.2MB in the beginning and 112.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.85ms. Allocated memory is still 206.6MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 567.85ms. Allocated memory is still 206.6MB. Free memory was 110.0MB in the beginning and 89.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1554.04ms. Allocated memory was 206.6MB in the beginning and 284.2MB in the end (delta: 77.6MB). Free memory was 88.0MB in the beginning and 246.5MB in the end (delta: -158.5MB). There was no memory consumed. 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: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, 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=182occurred in iteration=1, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s 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 19:09:54,061 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...