/usr/bin/java -Xmx16000000000 -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/concurrent/pthreads/regression/pthreadMutex02-unsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:28:03,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:28:03,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:28:03,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:28:03,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:28:03,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:28:03,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:28:03,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:28:03,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:28:03,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:28:03,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:28:03,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:28:03,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:28:03,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:28:03,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:28:03,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:28:03,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:28:03,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:28:03,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:28:03,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:28:03,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:28:03,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:28:03,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:28:03,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:28:03,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 22:28:03,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 22:28:03,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 22:28:03,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 22:28:03,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 22:28:03,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 22:28:03,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:28:03,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:28:03,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:28:03,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:28:03,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:28:03,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:28:03,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:28:03,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:28:03,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:28:03,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:28:03,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:28:03,921 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 [2021-03-11 22:28:03,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:28:03,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:28:03,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:28:03,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:28:03,949 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:28:03,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:28:03,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:28:03,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:28:03,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:28:03,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:28:03,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:28:03,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:28:03,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:28:04,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:28:04,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:28:04,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:28:04,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:28:04,208 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:28:04,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2021-03-11 22:28:04,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e64e2c0/b17ce9b4aacf47dd8e0f71aeb0f81a7b/FLAG2862cb123 [2021-03-11 22:28:04,607 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:28:04,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2021-03-11 22:28:04,607 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:04,607 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:04,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e64e2c0/b17ce9b4aacf47dd8e0f71aeb0f81a7b/FLAG2862cb123 [2021-03-11 22:28:05,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e64e2c0/b17ce9b4aacf47dd8e0f71aeb0f81a7b [2021-03-11 22:28:05,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:28:05,007 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:28:05,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:05,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:28:05,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:28:05,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8625791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05, skipping insertion in model container [2021-03-11 22:28:05,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:28:05,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:28:05,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:05,110 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:28:05,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:05,143 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:28:05,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05 WrapperNode [2021-03-11 22:28:05,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:05,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:05,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:28:05,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:28:05,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:05,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:28:05,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:28:05,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:28:05,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... [2021-03-11 22:28:05,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:28:05,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:28:05,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:28:05,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:28:05,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:28:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-11 22:28:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 22:28:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:28:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:28:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 22:28:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:28:05,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:28:05,375 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:28:05,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:05 BoogieIcfgContainer [2021-03-11 22:28:05,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:28:05,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:28:05,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:28:05,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:28:05,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:28:05" (1/3) ... [2021-03-11 22:28:05,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58daf8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:05, skipping insertion in model container [2021-03-11 22:28:05,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:05" (2/3) ... [2021-03-11 22:28:05,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58daf8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:05, skipping insertion in model container [2021-03-11 22:28:05,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:05" (3/3) ... [2021-03-11 22:28:05,381 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex02-unsafe.c [2021-03-11 22:28:05,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:28:05,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:28:05,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-03-11 22:28:05,411 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:28:05,411 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:28:05,411 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:28:05,411 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:28:05,411 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:28:05,411 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:28:05,411 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:28:05,411 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:28:05,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 7 places, 6 transitions, 12 flow [2021-03-11 22:28:05,427 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-11 22:28:05,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:05,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 22:28:05,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 7 places, 6 transitions, 12 flow [2021-03-11 22:28:05,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 4 places, 3 transitions, 6 flow [2021-03-11 22:28:05,432 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:28:05,438 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 4 places, 3 transitions, 6 flow [2021-03-11 22:28:05,440 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 4 places, 3 transitions, 6 flow [2021-03-11 22:28:05,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 4 places, 3 transitions, 6 flow [2021-03-11 22:28:05,441 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-11 22:28:05,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:05,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 22:28:05,442 INFO L116 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-11 22:28:05,706 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2021-03-11 22:28:05,945 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2021-03-11 22:28:06,025 INFO L131 LiptonReduction]: Checked pairs total: 0 [2021-03-11 22:28:06,025 INFO L133 LiptonReduction]: Total number of compositions: 2 [2021-03-11 22:28:06,027 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 597 [2021-03-11 22:28:06,035 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-11 22:28:06,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:06,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:06,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1] [2021-03-11 22:28:06,037 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 40, now seen corresponding path program 1 times [2021-03-11 22:28:06,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:06,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167384716] [2021-03-11 22:28:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:28:06,127 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:28:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:28:06,150 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:28:06,164 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 22:28:06,165 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 22:28:06,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:28:06,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:28:06 BoogieIcfgContainer [2021-03-11 22:28:06,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:28:06,181 INFO L168 Benchmark]: Toolchain (without parser) took 1175.40 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.6 MB in the beginning and 258.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:06,181 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 164.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:06,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.78 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.0 MB in the beginning and 328.1 MB in the end (delta: -94.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:06,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.63 ms. Allocated memory is still 343.9 MB. Free memory was 328.1 MB in the beginning and 326.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:06,183 INFO L168 Benchmark]: Boogie Preprocessor took 9.96 ms. Allocated memory is still 343.9 MB. Free memory was 326.4 MB in the beginning and 325.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:06,184 INFO L168 Benchmark]: RCFGBuilder took 199.48 ms. Allocated memory is still 343.9 MB. Free memory was 325.3 MB in the beginning and 313.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:06,184 INFO L168 Benchmark]: TraceAbstraction took 801.57 ms. Allocated memory is still 343.9 MB. Free memory was 313.1 MB in the beginning and 258.7 MB in the end (delta: 54.4 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:06,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 164.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 135.78 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.0 MB in the beginning and 328.1 MB in the end (delta: -94.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.63 ms. Allocated memory is still 343.9 MB. Free memory was 328.1 MB in the beginning and 326.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.96 ms. Allocated memory is still 343.9 MB. Free memory was 326.4 MB in the beginning and 325.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 199.48 ms. Allocated memory is still 343.9 MB. Free memory was 325.3 MB in the beginning and 313.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 801.57 ms. Allocated memory is still 343.9 MB. Free memory was 313.1 MB in the beginning and 258.7 MB in the end (delta: 54.4 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 585.2ms, 4 PlacesBefore, 2 PlacesAfterwards, 3 TransitionsBefore, 1 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 45]: assertion can be violated assertion can be violated We found a FailurePath: [L35] pthread_mutex_t mutex; [L42] int ret = pthread_mutex_unlock(&mutex); [L45] CodeAnnotStmt[Assertion] VAL [mutex={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 757.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 621.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.3ms SsaConstructionTime, 27.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! Received shutdown request...