/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:15:55,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:15:55,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:15:55,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:15:55,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:15:55,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:15:55,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:15:56,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:15:56,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:15:56,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:15:56,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:15:56,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:15:56,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:15:56,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:15:56,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:15:56,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:15:56,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:15:56,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:15:56,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:15:56,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:15:56,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:15:56,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:15:56,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:15:56,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:15:56,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 08:15:56,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 08:15:56,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 08:15:56,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 08:15:56,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 08:15:56,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 08:15:56,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:15:56,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:15:56,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:15:56,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:15:56,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:15:56,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:15:56,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:15:56,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:15:56,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:15:56,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:15:56,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:15:56,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 08:15:56,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:15:56,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:15:56,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:15:56,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:15:56,108 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:15:56,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:15:56,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:15:56,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:15:56,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:15:56,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:15:56,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:15:56,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:15:56,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:15:56,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:15:56,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:15:56,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:15:56,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:15:56,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:15:56,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:15:56,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:15:56,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:15:56,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:15:56,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:15:56,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:15:56,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:15:56,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:15:56,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:15:56,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:15:56,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 08:15:56,437 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 08:15:56,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-06-13 08:15:56,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0af24ed/a20252fc27e24d729efa368182ef703a/FLAG7110dfce5 [2021-06-13 08:15:56,961 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 08:15:56,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-06-13 08:15:56,961 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:15:56,962 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:15:56,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0af24ed/a20252fc27e24d729efa368182ef703a/FLAG7110dfce5 [2021-06-13 08:15:57,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0af24ed/a20252fc27e24d729efa368182ef703a [2021-06-13 08:15:57,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:15:57,512 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 08:15:57,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 08:15:57,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 08:15:57,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 08:15:57,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694ed88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57, skipping insertion in model container [2021-06-13 08:15:57,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 08:15:57,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 08:15:57,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:15:57,694 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 08:15:57,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:15:57,730 INFO L208 MainTranslator]: Completed translation [2021-06-13 08:15:57,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57 WrapperNode [2021-06-13 08:15:57,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 08:15:57,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:15:57,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:15:57,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:15:57,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:15:57,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:15:57,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:15:57,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:15:57,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (1/1) ... [2021-06-13 08:15:57,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:15:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:15:57,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:15:57,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:15:57,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (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 [2021-06-13 08:15:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-06-13 08:15:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-13 08:15:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:15:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:15:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 08:15:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 08:15:58,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:15:58,035 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 08:15:58,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:15:58 BoogieIcfgContainer [2021-06-13 08:15:58,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:15:58,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:15:58,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:15:58,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:15:58,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 08:15:57" (1/3) ... [2021-06-13 08:15:58,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec56f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:15:58, skipping insertion in model container [2021-06-13 08:15:58,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:57" (2/3) ... [2021-06-13 08:15:58,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec56f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:15:58, skipping insertion in model container [2021-06-13 08:15:58,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:15:58" (3/3) ... [2021-06-13 08:15:58,056 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-06-13 08:15:58,062 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:15:58,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-13 08:15:58,084 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 08:15:58,111 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:15:58,111 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:15:58,111 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:15:58,111 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:15:58,111 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:15:58,111 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:15:58,112 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:15:58,112 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:15:58,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 11 transitions, 22 flow [2021-06-13 08:15:58,167 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-06-13 08:15:58,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:15:58,169 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. [2021-06-13 08:15:58,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 11 transitions, 22 flow [2021-06-13 08:15:58,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 8 transitions, 16 flow [2021-06-13 08:15:58,177 INFO L129 PetriNetUnfolder]: 1/5 cut-off events. [2021-06-13 08:15:58,177 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:15:58,177 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:15:58,178 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-13 08:15:58,178 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:15:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:15:58,183 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-06-13 08:15:58,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:15:58,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146599506] [2021-06-13 08:15:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:15:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:15:58,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:58,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:15:58,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:15:58,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:15:58,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146599506] [2021-06-13 08:15:58,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146599506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:15:58,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:15:58,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:15:58,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014144514] [2021-06-13 08:15:58,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:15:58,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:15:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:15:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:15:58,357 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 11 [2021-06-13 08:15:58,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 8 transitions, 16 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-06-13 08:15:58,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:15:58,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 11 [2021-06-13 08:15:58,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:15:58,369 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-13 08:15:58,369 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:15:58,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 5 events. 0/5 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. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 08:15:58,370 INFO L132 encePairwiseOnDemand]: 9/11 looper letters, 1 selfloop transitions, 1 changer transitions 0/5 dead transitions. [2021-06-13 08:15:58,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 5 transitions, 14 flow [2021-06-13 08:15:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:15:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:15:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2021-06-13 08:15:58,379 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2021-06-13 08:15:58,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:15:58,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-06-13 08:15:58,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-13 08:15:58,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-13 08:15:58,385 INFO L185 Difference]: Start difference. First operand has 8 places, 8 transitions, 16 flow. Second operand 3 states and 21 transitions. [2021-06-13 08:15:58,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 5 transitions, 14 flow [2021-06-13 08:15:58,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 5 transitions, 14 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 08:15:58,388 INFO L241 Difference]: Finished difference. Result has 8 places, 5 transitions, 12 flow [2021-06-13 08:15:58,389 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12, PETRI_PLACES=8, PETRI_TRANSITIONS=5} [2021-06-13 08:15:58,390 INFO L335 CegarLoopForPetriNet]: 8 programPoint places, 0 predicate places. [2021-06-13 08:15:58,390 INFO L482 AbstractCegarLoop]: Abstraction has has 8 places, 5 transitions, 12 flow [2021-06-13 08:15:58,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-06-13 08:15:58,391 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:15:58,391 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-13 08:15:58,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:15:58,391 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:15:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:15:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash 28697735, now seen corresponding path program 1 times [2021-06-13 08:15:58,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:15:58,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773467442] [2021-06-13 08:15:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:15:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:15:58,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:58,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:15:58,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:58,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:15:58,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:15:58,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773467442] [2021-06-13 08:15:58,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773467442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:15:58,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:15:58,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:15:58,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128149794] [2021-06-13 08:15:58,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:15:58,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:15:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:15:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:15:58,435 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 11 [2021-06-13 08:15:58,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 5 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-06-13 08:15:58,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:15:58,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 11 [2021-06-13 08:15:58,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:15:58,441 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-06-13 08:15:58,442 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:15:58,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 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 2 conditions per place. [2021-06-13 08:15:58,442 INFO L132 encePairwiseOnDemand]: 9/11 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2021-06-13 08:15:58,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 3 transitions, 12 flow [2021-06-13 08:15:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:15:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:15:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2021-06-13 08:15:58,444 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2021-06-13 08:15:58,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:15:58,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 21 transitions. [2021-06-13 08:15:58,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-06-13 08:15:58,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-13 08:15:58,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-13 08:15:58,446 INFO L185 Difference]: Start difference. First operand has 8 places, 5 transitions, 12 flow. Second operand 3 states and 21 transitions. [2021-06-13 08:15:58,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 3 transitions, 12 flow [2021-06-13 08:15:58,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 7 places, 3 transitions, 11 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:15:58,447 INFO L241 Difference]: Finished difference. Result has 7 places, 0 transitions, 0 flow [2021-06-13 08:15:58,447 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=5, 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=3, PETRI_FLOW=0, PETRI_PLACES=7, PETRI_TRANSITIONS=0} [2021-06-13 08:15:58,448 INFO L335 CegarLoopForPetriNet]: 8 programPoint places, -1 predicate places. [2021-06-13 08:15:58,448 INFO L482 AbstractCegarLoop]: Abstraction has has 7 places, 0 transitions, 0 flow [2021-06-13 08:15:58,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-06-13 08:15:58,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:15:58,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:15:58 BoogieIcfgContainer [2021-06-13 08:15:58,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:15:58,454 INFO L168 Benchmark]: Toolchain (without parser) took 941.31 ms. Allocated memory is still 185.6 MB. Free memory was 147.8 MB in the beginning and 129.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,455 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory was 166.7 MB in the beginning and 166.6 MB in the end (delta: 105.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:15:58,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.69 ms. Allocated memory is still 185.6 MB. Free memory was 147.6 MB in the beginning and 167.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 185.6 MB. Free memory was 167.5 MB in the beginning and 166.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,457 INFO L168 Benchmark]: Boogie Preprocessor took 22.20 ms. Allocated memory is still 185.6 MB. Free memory was 166.2 MB in the beginning and 165.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,457 INFO L168 Benchmark]: RCFGBuilder took 252.27 ms. Allocated memory is still 185.6 MB. Free memory was 165.2 MB in the beginning and 154.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,458 INFO L168 Benchmark]: TraceAbstraction took 414.95 ms. Allocated memory is still 185.6 MB. Free memory was 153.6 MB in the beginning and 129.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:58,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory was 166.7 MB in the beginning and 166.6 MB in the end (delta: 105.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 216.69 ms. Allocated memory is still 185.6 MB. Free memory was 147.6 MB in the beginning and 167.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 185.6 MB. Free memory was 167.5 MB in the beginning and 166.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.20 ms. Allocated memory is still 185.6 MB. Free memory was 166.2 MB in the beginning and 165.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 252.27 ms. Allocated memory is still 185.6 MB. Free memory was 165.2 MB in the beginning and 154.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 414.95 ms. Allocated memory is still 185.6 MB. Free memory was 153.6 MB in the beginning and 129.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 for errors in thread instance: ULTIMATE.start CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 341.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 50.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 63.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, 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: 5.7ms SsaConstructionTime, 42.6ms SatisfiabilityAnalysisTime, 68.6ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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...