/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:14:34,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:14:34,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:14:35,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:14:35,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:14:35,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:14:35,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:14:35,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:14:35,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:14:35,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:14:35,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:14:35,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:14:35,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:14:35,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:14:35,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:14:35,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:14:35,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:14:35,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:14:35,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:14:35,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:14:35,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:14:35,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:14:35,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:14:35,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:14:35,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 13:14:35,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 13:14:35,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 13:14:35,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 13:14:35,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 13:14:35,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 13:14:35,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:14:35,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:14:35,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:14:35,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:14:35,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:14:35,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:14:35,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:14:35,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:14:35,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:14:35,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:14:35,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:14:35,058 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-VariableLbe.epf [2021-03-24 13:14:35,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:14:35,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:14:35,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:14:35,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:14:35,086 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:14:35,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:14:35,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:14:35,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:14:35,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:14:35,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:14:35,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:14:35,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:14:35,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:14:35,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:14:35,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:35,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:14:35,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:14:35,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:14:35,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:14:35,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:14:35,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:14:35,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 13:14:35,379 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 13:14:35,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-24 13:14:35,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a422f1af/4650af515f35405e9bdc60eb3274809d/FLAGddb496fe1 [2021-03-24 13:14:35,806 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 13:14:35,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-24 13:14:35,806 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:35,806 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:35,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a422f1af/4650af515f35405e9bdc60eb3274809d/FLAGddb496fe1 [2021-03-24 13:14:36,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a422f1af/4650af515f35405e9bdc60eb3274809d [2021-03-24 13:14:36,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:14:36,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 13:14:36,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:36,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 13:14:36,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 13:14:36,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10faa458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36, skipping insertion in model container [2021-03-24 13:14:36,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 13:14:36,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 13:14:36,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:36,306 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 13:14:36,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:36,331 INFO L208 MainTranslator]: Completed translation [2021-03-24 13:14:36,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36 WrapperNode [2021-03-24 13:14:36,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:36,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:36,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:14:36,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:14:36,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:36,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:14:36,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:14:36,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:14:36,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (1/1) ... [2021-03-24 13:14:36,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:14:36,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:14:36,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:14:36,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:14:36,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (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 [2021-03-24 13:14:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-24 13:14:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-24 13:14:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:14:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:14:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 13:14:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 13:14:36,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:14:36,595 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 13:14:36,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:36 BoogieIcfgContainer [2021-03-24 13:14:36,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:14:36,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:14:36,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:14:36,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:14:36,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 01:14:36" (1/3) ... [2021-03-24 13:14:36,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7611eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:36, skipping insertion in model container [2021-03-24 13:14:36,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:36" (2/3) ... [2021-03-24 13:14:36,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7611eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:36, skipping insertion in model container [2021-03-24 13:14:36,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:36" (3/3) ... [2021-03-24 13:14:36,601 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-03-24 13:14:36,607 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:14:36,609 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 13:14:36,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 13:14:36,641 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:14:36,641 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:14:36,641 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:14:36,641 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:14:36,641 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:14:36,641 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:14:36,641 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:14:36,641 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:14:36,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 11 transitions, 22 flow [2021-03-24 13:14:36,660 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-03-24 13:14:36,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:36,662 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. [2021-03-24 13:14:36,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 11 transitions, 22 flow [2021-03-24 13:14:36,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 8 transitions, 16 flow [2021-03-24 13:14:36,666 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:14:36,681 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-24 13:14:36,683 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-24 13:14:36,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 8 places, 8 transitions, 16 flow [2021-03-24 13:14:36,687 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-24 13:14:36,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:36,688 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. [2021-03-24 13:14:36,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-24 13:14:36,937 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-03-24 13:14:37,189 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-24 13:14:37,189 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 13:14:37,192 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 526 [2021-03-24 13:14:37,196 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-24 13:14:37,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:37,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:37,197 INFO L263 CegarLoopForPetriNet]: trace histogram [1] [2021-03-24 13:14:37,197 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:37,200 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-03-24 13:14:37,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:37,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821924934] [2021-03-24 13:14:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:37,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821924934] [2021-03-24 13:14:37,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:37,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-03-24 13:14:37,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73616211] [2021-03-24 13:14:37,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 13:14:37,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 13:14:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 13:14:37,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 17 [2021-03-24 13:14:37,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-03-24 13:14:37,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:37,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 17 [2021-03-24 13:14:37,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:37,273 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-24 13:14:37,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:37,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5 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. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-24 13:14:37,273 INFO L132 encePairwiseOnDemand]: 16/17 looper letters, 0 selfloop transitions, 0 changer transitions 0/3 dead transitions. [2021-03-24 13:14:37,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 6 flow [2021-03-24 13:14:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 13:14:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 13:14:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 27 transitions. [2021-03-24 13:14:37,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-03-24 13:14:37,280 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 27 transitions. [2021-03-24 13:14:37,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 27 transitions. [2021-03-24 13:14:37,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:37,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 27 transitions. [2021-03-24 13:14:37,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-03-24 13:14:37,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-03-24 13:14:37,285 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-03-24 13:14:37,286 INFO L185 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 2 states and 27 transitions. [2021-03-24 13:14:37,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 6 flow [2021-03-24 13:14:37,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 13:14:37,288 INFO L241 Difference]: Finished difference. Result has 5 places, 3 transitions, 6 flow [2021-03-24 13:14:37,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=6, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2021-03-24 13:14:37,289 INFO L343 CegarLoopForPetriNet]: 5 programPoint places, 0 predicate places. [2021-03-24 13:14:37,289 INFO L480 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 6 flow [2021-03-24 13:14:37,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-03-24 13:14:37,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:37,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-24 13:14:37,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:14:37,290 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash 46797, now seen corresponding path program 1 times [2021-03-24 13:14:37,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:37,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566444633] [2021-03-24 13:14:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:37,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:37,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:14:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:37,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566444633] [2021-03-24 13:14:37,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:37,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 13:14:37,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101290405] [2021-03-24 13:14:37,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:14:37,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:37,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:14:37,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:14:37,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 17 [2021-03-24 13:14:37,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 6 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-03-24 13:14:37,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:37,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 17 [2021-03-24 13:14:37,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:37,334 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-24 13:14:37,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:37,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6 conditions, 2 events. 0/2 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. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-24 13:14:37,335 INFO L132 encePairwiseOnDemand]: 15/17 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-03-24 13:14:37,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 2 transitions, 6 flow [2021-03-24 13:14:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:14:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:14:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2021-03-24 13:14:37,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2021-03-24 13:14:37,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 26 transitions. [2021-03-24 13:14:37,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 26 transitions. [2021-03-24 13:14:37,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:37,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 26 transitions. [2021-03-24 13:14:37,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-03-24 13:14:37,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-03-24 13:14:37,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-03-24 13:14:37,337 INFO L185 Difference]: Start difference. First operand has 5 places, 3 transitions, 6 flow. Second operand 3 states and 26 transitions. [2021-03-24 13:14:37,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 2 transitions, 6 flow [2021-03-24 13:14:37,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 2 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 13:14:37,337 INFO L241 Difference]: Finished difference. Result has 6 places, 0 transitions, 0 flow [2021-03-24 13:14:37,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=6, PETRI_TRANSITIONS=0} [2021-03-24 13:14:37,338 INFO L343 CegarLoopForPetriNet]: 5 programPoint places, 1 predicate places. [2021-03-24 13:14:37,338 INFO L480 AbstractCegarLoop]: Abstraction has has 6 places, 0 transitions, 0 flow [2021-03-24 13:14:37,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-03-24 13:14:37,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:14:37,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:14:37 BoogieIcfgContainer [2021-03-24 13:14:37,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:14:37,341 INFO L168 Benchmark]: Toolchain (without parser) took 1172.27 ms. Allocated memory is still 312.5 MB. Free memory was 274.9 MB in the beginning and 184.5 MB in the end (delta: 90.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:37,341 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 312.5 MB. Free memory is still 293.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:37,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.29 ms. Allocated memory is still 312.5 MB. Free memory was 274.7 MB in the beginning and 295.6 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:37,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.52 ms. Allocated memory is still 312.5 MB. Free memory was 295.6 MB in the beginning and 293.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:37,342 INFO L168 Benchmark]: Boogie Preprocessor took 23.09 ms. Allocated memory is still 312.5 MB. Free memory was 293.5 MB in the beginning and 292.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:37,343 INFO L168 Benchmark]: RCFGBuilder took 216.17 ms. Allocated memory is still 312.5 MB. Free memory was 292.5 MB in the beginning and 279.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:37,343 INFO L168 Benchmark]: TraceAbstraction took 742.91 ms. Allocated memory is still 312.5 MB. Free memory was 279.9 MB in the beginning and 184.5 MB in the end (delta: 95.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:37,345 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 312.5 MB. Free memory is still 293.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 163.29 ms. Allocated memory is still 312.5 MB. Free memory was 274.7 MB in the beginning and 295.6 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.52 ms. Allocated memory is still 312.5 MB. Free memory was 295.6 MB in the beginning and 293.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.09 ms. Allocated memory is still 312.5 MB. Free memory was 293.5 MB in the beginning and 292.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 216.17 ms. Allocated memory is still 312.5 MB. Free memory was 292.5 MB in the beginning and 279.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 742.91 ms. Allocated memory is still 312.5 MB. Free memory was 279.9 MB in the beginning and 184.5 MB in the end (delta: 95.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 506.2ms, 8 PlacesBefore, 5 PlacesAfterwards, 8 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 5 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 6 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: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 701.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 30.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 553.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 15.1ms SatisfiabilityAnalysisTime, 30.1ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...