/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/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:27:59,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:27:59,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:27:59,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:27:59,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:27:59,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:27:59,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:27:59,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:27:59,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:27:59,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:27:59,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:27:59,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:27:59,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:27:59,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:27:59,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:27:59,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:27:59,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:27:59,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:27:59,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:27:59,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:27:59,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:27:59,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:27:59,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:27:59,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:27:59,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 22:27:59,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 22:27:59,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 22:27:59,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 22:27:59,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 22:27:59,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 22:27:59,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:27:59,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:27:59,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:27:59,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:27:59,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:27:59,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:27:59,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:27:59,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:27:59,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:27:59,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:27:59,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:27:59,970 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 22:27:59,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:27:59,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:27:59,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:27:59,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:27:59,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:27:59,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:27:59,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:27:59,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:28:00,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:28:00,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:28:00,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:28:00,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:28:00,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:28:00,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:28:00,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:28:00,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:28:00,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:28:00,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:28:00,212 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:28:00,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-11 22:28:00,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac017b450/89e766e036cd4066b0465a93d39d47fb/FLAG0ebb3f7a3 [2021-03-11 22:28:00,578 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:28:00,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-11 22:28:00,578 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:00,578 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:00,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac017b450/89e766e036cd4066b0465a93d39d47fb/FLAG0ebb3f7a3 [2021-03-11 22:28:00,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac017b450/89e766e036cd4066b0465a93d39d47fb [2021-03-11 22:28:00,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:28:00,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:28:00,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:00,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:28:00,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:28:00,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e602ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00, skipping insertion in model container [2021-03-11 22:28:00,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:28:01,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:28:01,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:01,090 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:28:01,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:01,137 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:28:01,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01 WrapperNode [2021-03-11 22:28:01,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:01,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:01,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:28:01,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:28:01,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:01,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:28:01,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:28:01,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:28:01,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (1/1) ... [2021-03-11 22:28:01,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:28:01,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:28:01,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:28:01,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:28:01,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (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 22:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-11 22:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 22:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:28:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 22:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:28:01,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:28:01,390 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:28:01,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:01 BoogieIcfgContainer [2021-03-11 22:28:01,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:28:01,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:28:01,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:28:01,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:28:01,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:28:00" (1/3) ... [2021-03-11 22:28:01,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16811dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:01, skipping insertion in model container [2021-03-11 22:28:01,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:01" (2/3) ... [2021-03-11 22:28:01,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16811dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:01, skipping insertion in model container [2021-03-11 22:28:01,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:01" (3/3) ... [2021-03-11 22:28:01,397 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-03-11 22:28:01,401 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:28:01,403 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 22:28:01,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 22:28:01,439 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:28:01,439 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:28:01,439 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:28:01,439 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:28:01,440 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:28:01,440 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:28:01,440 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:28:01,440 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:28:01,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 11 transitions, 22 flow [2021-03-11 22:28:01,461 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-03-11 22:28:01,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:01,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 11 events. 1/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:28:01,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 11 transitions, 22 flow [2021-03-11 22:28:01,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 8 transitions, 16 flow [2021-03-11 22:28:01,468 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:28:01,482 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-11 22:28:01,484 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-11 22:28:01,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 8 places, 8 transitions, 16 flow [2021-03-11 22:28:01,488 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-11 22:28:01,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:01,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:28:01,489 INFO L116 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-11 22:28:01,656 INFO L131 LiptonReduction]: Checked pairs total: 0 [2021-03-11 22:28:01,657 INFO L133 LiptonReduction]: Total number of compositions: 10 [2021-03-11 22:28:01,660 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 194 [2021-03-11 22:28:01,667 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-11 22:28:01,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:01,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:01,668 INFO L255 CegarLoopForPetriNet]: trace histogram [1] [2021-03-11 22:28:01,668 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:01,672 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2021-03-11 22:28:01,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:01,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015148170] [2021-03-11 22:28:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:28:01,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015148170] [2021-03-11 22:28:01,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:01,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-03-11 22:28:01,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277553785] [2021-03-11 22:28:01,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 22:28:01,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 22:28:01,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 22:28:01,769 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 21 [2021-03-11 22:28:01,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3 places, 2 transitions, 4 flow. Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-11 22:28:01,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:01,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 21 [2021-03-11 22:28:01,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:01,782 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-11 22:28:01,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:01,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 1/1 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 22:28:01,783 INFO L132 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 0/0 dead transitions. [2021-03-11 22:28:01,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2 places, 0 transitions, 0 flow [2021-03-11 22:28:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 22:28:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 22:28:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 22 transitions. [2021-03-11 22:28:01,789 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2021-03-11 22:28:01,790 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 22 transitions. [2021-03-11 22:28:01,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 22 transitions. [2021-03-11 22:28:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:01,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 22 transitions. [2021-03-11 22:28:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-03-11 22:28:01,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-03-11 22:28:01,796 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-03-11 22:28:01,798 INFO L185 Difference]: Start difference. First operand has 3 places, 2 transitions, 4 flow. Second operand 2 states and 22 transitions. [2021-03-11 22:28:01,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2 places, 0 transitions, 0 flow [2021-03-11 22:28:01,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2 places, 0 transitions, 0 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 22:28:01,800 INFO L241 Difference]: Finished difference. Result has 2 places, 0 transitions, 0 flow [2021-03-11 22:28:01,801 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=0, PETRI_DIFFERENCE_MINUEND_PLACES=1, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=0, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=0, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=2, PETRI_TRANSITIONS=0} [2021-03-11 22:28:01,802 INFO L335 CegarLoopForPetriNet]: 3 programPoint places, -1 predicate places. [2021-03-11 22:28:01,802 INFO L480 AbstractCegarLoop]: Abstraction has has 2 places, 0 transitions, 0 flow [2021-03-11 22:28:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-11 22:28:01,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:28:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:28:01 BoogieIcfgContainer [2021-03-11 22:28:01,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:28:01,808 INFO L168 Benchmark]: Toolchain (without parser) took 821.36 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 236.6 MB in the beginning and 297.1 MB in the end (delta: -60.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:01,808 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:01,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.12 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.9 MB in the beginning and 342.0 MB in the end (delta: -106.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:01,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.14 ms. Allocated memory is still 358.6 MB. Free memory was 342.0 MB in the beginning and 340.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:01,811 INFO L168 Benchmark]: Boogie Preprocessor took 10.32 ms. Allocated memory is still 358.6 MB. Free memory was 340.3 MB in the beginning and 339.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:01,811 INFO L168 Benchmark]: RCFGBuilder took 221.81 ms. Allocated memory is still 358.6 MB. Free memory was 339.1 MB in the beginning and 327.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:01,812 INFO L168 Benchmark]: TraceAbstraction took 413.50 ms. Allocated memory is still 358.6 MB. Free memory was 327.9 MB in the beginning and 297.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:01,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 149.12 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.9 MB in the beginning and 342.0 MB in the end (delta: -106.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.14 ms. Allocated memory is still 358.6 MB. Free memory was 342.0 MB in the beginning and 340.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.32 ms. Allocated memory is still 358.6 MB. Free memory was 340.3 MB in the beginning and 339.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 221.81 ms. Allocated memory is still 358.6 MB. Free memory was 339.1 MB in the beginning and 327.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 413.50 ms. Allocated memory is still 358.6 MB. Free memory was 327.9 MB in the beginning and 297.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 173.3ms, 8 PlacesBefore, 3 PlacesAfterwards, 8 TransitionsBefore, 2 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 10 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 - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 368.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 48.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 226.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, InterpolantAutomatonStates: 2, 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: 4.5ms SsaConstructionTime, 3.0ms SatisfiabilityAnalysisTime, 7.6ms InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct! Received shutdown request...