./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d16741ac57914c34248ac4b60573c9c4b90df3cc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:17:02,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:17:02,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:17:02,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:17:02,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:17:02,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:17:02,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:17:02,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:17:02,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:17:02,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:17:02,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:17:02,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:17:02,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:17:02,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:17:02,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:17:02,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:17:02,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:17:02,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:17:02,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:17:02,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:17:02,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:17:02,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:17:02,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:17:02,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:17:02,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:17:02,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:17:02,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:17:02,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:17:02,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:17:02,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:17:02,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:17:02,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:17:02,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:17:02,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:17:02,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:17:02,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:17:02,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:17:02,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:17:02,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:17:02,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:17:02,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:17:02,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:17:02,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:17:02,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:17:02,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:17:02,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:17:02,999 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:17:03,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:17:03,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:17:03,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:17:03,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:17:03,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:17:03,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:17:03,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:17:03,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:17:03,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:17:03,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:17:03,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:17:03,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:17:03,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:17:03,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:17:03,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:17:03,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:17:03,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:17:03,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:17:03,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:17:03,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:17:03,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:17:03,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:17:03,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:17:03,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:17:03,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d16741ac57914c34248ac4b60573c9c4b90df3cc [2020-12-02 12:17:03,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:17:03,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:17:03,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:17:03,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:17:03,527 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:17:03,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2020-12-02 12:17:03,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c4e1269/ca0f6f68f38442af8ff0f2931c15553d/FLAG2613dba4d [2020-12-02 12:17:04,462 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:17:04,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2020-12-02 12:17:04,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c4e1269/ca0f6f68f38442af8ff0f2931c15553d/FLAG2613dba4d [2020-12-02 12:17:04,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c4e1269/ca0f6f68f38442af8ff0f2931c15553d [2020-12-02 12:17:04,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:17:04,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:17:04,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:17:04,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:17:04,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:17:04,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:17:04" (1/1) ... [2020-12-02 12:17:04,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b4160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:04, skipping insertion in model container [2020-12-02 12:17:04,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:17:04" (1/1) ... [2020-12-02 12:17:04,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:17:04,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:17:05,056 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 12:17:05,332 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2020-12-02 12:17:05,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:17:05,372 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:17:05,393 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 12:17:05,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2020-12-02 12:17:05,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:17:05,559 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:17:05,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05 WrapperNode [2020-12-02 12:17:05,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:17:05,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:17:05,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:17:05,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:17:05,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:17:05,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:17:05,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:17:05,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:17:05,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... [2020-12-02 12:17:05,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:17:05,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:17:05,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:17:05,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:17:05,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:17:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 12:17:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:17:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-02 12:17:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:17:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:17:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:17:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-12-02 12:17:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-12-02 12:17:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:17:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:17:05,796 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:17:06,344 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:17:06,344 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-02 12:17:06,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:17:06 BoogieIcfgContainer [2020-12-02 12:17:06,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:17:06,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:17:06,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:17:06,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:17:06,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:17:04" (1/3) ... [2020-12-02 12:17:06,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d927135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:17:06, skipping insertion in model container [2020-12-02 12:17:06,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:17:05" (2/3) ... [2020-12-02 12:17:06,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d927135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:17:06, skipping insertion in model container [2020-12-02 12:17:06,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:17:06" (3/3) ... [2020-12-02 12:17:06,357 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-12-02 12:17:06,374 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:17:06,375 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:17:06,379 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:17:06,380 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:17:06,410 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,411 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,411 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,411 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,411 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,412 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,412 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,412 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,412 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,413 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,413 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,413 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,414 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,415 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,415 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,415 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,416 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,416 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,416 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,416 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,419 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,419 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,420 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,420 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,420 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,420 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:17:06,429 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-02 12:17:06,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:17:06,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:17:06,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:17:06,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:17:06,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:17:06,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:17:06,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:17:06,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:17:06,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:17:06,493 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:17:06,495 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 69 transitions, 146 flow [2020-12-02 12:17:06,499 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 69 transitions, 146 flow [2020-12-02 12:17:06,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2020-12-02 12:17:06,542 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2020-12-02 12:17:06,543 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-12-02 12:17:06,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 5/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-12-02 12:17:06,551 INFO L116 LiptonReduction]: Number of co-enabled transitions 352 [2020-12-02 12:17:09,750 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-12-02 12:17:09,933 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-12-02 12:17:10,326 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-12-02 12:17:10,469 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-02 12:17:10,788 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-12-02 12:17:10,950 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-02 12:17:11,548 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-12-02 12:17:11,815 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-12-02 12:17:12,461 WARN L197 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-12-02 12:17:12,728 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-12-02 12:17:12,730 INFO L131 LiptonReduction]: Checked pairs total: 369 [2020-12-02 12:17:12,731 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-02 12:17:12,738 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 12 transitions, 32 flow [2020-12-02 12:17:12,748 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16 states. [2020-12-02 12:17:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-02 12:17:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 12:17:12,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:17:12,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 12:17:12,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:17:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:17:12,770 INFO L82 PathProgramCache]: Analyzing trace with hash 8280046, now seen corresponding path program 1 times [2020-12-02 12:17:12,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:17:12,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471269004] [2020-12-02 12:17:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:17:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471269004] [2020-12-02 12:17:13,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:17:13,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:17:13,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554822476] [2020-12-02 12:17:13,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:17:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:17:13,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:17:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:17:13,146 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-12-02 12:17:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:17:13,174 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2020-12-02 12:17:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:17:13,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-02 12:17:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:17:13,186 INFO L225 Difference]: With dead ends: 12 [2020-12-02 12:17:13,186 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 12:17:13,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:17:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 12:17:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 12:17:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 12:17:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2020-12-02 12:17:13,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2020-12-02 12:17:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:17:13,225 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-12-02 12:17:13,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:17:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2020-12-02 12:17:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:17:13,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:17:13,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:17:13,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:17:13,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:17:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:17:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash -632845718, now seen corresponding path program 1 times [2020-12-02 12:17:13,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:17:13,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704554629] [2020-12-02 12:17:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:17:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704554629] [2020-12-02 12:17:13,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:17:13,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:17:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153452427] [2020-12-02 12:17:13,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:17:13,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:17:13,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:17:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:17:13,279 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand 3 states. [2020-12-02 12:17:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:17:13,292 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2020-12-02 12:17:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:17:13,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-02 12:17:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:17:13,293 INFO L225 Difference]: With dead ends: 11 [2020-12-02 12:17:13,293 INFO L226 Difference]: Without dead ends: 11 [2020-12-02 12:17:13,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:17:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-02 12:17:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-02 12:17:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-02 12:17:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2020-12-02 12:17:13,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2020-12-02 12:17:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:17:13,298 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2020-12-02 12:17:13,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:17:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2020-12-02 12:17:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:17:13,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:17:13,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:17:13,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:17:13,300 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:17:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:17:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1856632653, now seen corresponding path program 1 times [2020-12-02 12:17:13,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:17:13,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628002436] [2020-12-02 12:17:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:17:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628002436] [2020-12-02 12:17:13,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658020002] [2020-12-02 12:17:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 12:17:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:13,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 12:17:13,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 12:17:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-02 12:17:13,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-02 12:17:13,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570902244] [2020-12-02 12:17:13,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:17:13,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:17:13,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:17:13,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:17:13,519 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand 5 states. [2020-12-02 12:17:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:17:13,557 INFO L93 Difference]: Finished difference Result 13 states and 23 transitions. [2020-12-02 12:17:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:17:13,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-02 12:17:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:17:13,558 INFO L225 Difference]: With dead ends: 13 [2020-12-02 12:17:13,558 INFO L226 Difference]: Without dead ends: 13 [2020-12-02 12:17:13,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:17:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-02 12:17:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-02 12:17:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-02 12:17:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2020-12-02 12:17:13,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 7 [2020-12-02 12:17:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:17:13,562 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. [2020-12-02 12:17:13,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:17:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. [2020-12-02 12:17:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:17:13,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:17:13,563 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-02 12:17:13,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-02 12:17:13,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:17:13,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:17:13,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1721050826, now seen corresponding path program 2 times [2020-12-02 12:17:13,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:17:13,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498973291] [2020-12-02 12:17:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:17:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498973291] [2020-12-02 12:17:13,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905065825] [2020-12-02 12:17:13,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 12:17:13,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 12:17:13,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 12:17:13,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 12:17:13,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 12:17:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:13,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-02 12:17:13,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-02 12:17:13,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3944192] [2020-12-02 12:17:13,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:17:13,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:17:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:17:13,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:17:13,930 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 6 states. [2020-12-02 12:17:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:17:13,953 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-12-02 12:17:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:17:13,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-02 12:17:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:17:13,955 INFO L225 Difference]: With dead ends: 15 [2020-12-02 12:17:13,955 INFO L226 Difference]: Without dead ends: 15 [2020-12-02 12:17:13,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:17:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-02 12:17:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-02 12:17:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-02 12:17:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2020-12-02 12:17:13,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 27 transitions. Word has length 8 [2020-12-02 12:17:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:17:13,960 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 27 transitions. [2020-12-02 12:17:13,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:17:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 27 transitions. [2020-12-02 12:17:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:17:13,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:17:13,966 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-12-02 12:17:14,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 12:17:14,167 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:17:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:17:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1812981485, now seen corresponding path program 3 times [2020-12-02 12:17:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:17:14,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075883500] [2020-12-02 12:17:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:17:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:17:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:17:14,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075883500] [2020-12-02 12:17:14,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317582072] [2020-12-02 12:17:14,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 12:17:14,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-02 12:17:14,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 12:17:14,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 12:17:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 12:17:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-02 12:17:14,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-02 12:17:14,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-12-02 12:17:14,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854086962] [2020-12-02 12:17:14,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:17:14,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:17:14,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:17:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:17:14,373 INFO L87 Difference]: Start difference. First operand 15 states and 27 transitions. Second operand 4 states. [2020-12-02 12:17:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:17:14,404 INFO L93 Difference]: Finished difference Result 14 states and 26 transitions. [2020-12-02 12:17:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:17:14,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:17:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:17:14,404 INFO L225 Difference]: With dead ends: 14 [2020-12-02 12:17:14,404 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:17:14,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:17:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:17:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:17:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:17:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:17:14,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-02 12:17:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:17:14,406 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:17:14,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:17:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:17:14,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:17:14,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 12:17:14,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:17:14 BasicIcfg [2020-12-02 12:17:14,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:17:14,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:17:14,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:17:14,626 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:17:14,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:17:06" (3/4) ... [2020-12-02 12:17:14,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:17:14,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2020-12-02 12:17:14,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:17:14,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-02 12:17:14,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-02 12:17:14,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:17:14,723 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:17:14,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:17:14,727 INFO L168 Benchmark]: Toolchain (without parser) took 10039.47 ms. Allocated memory was 56.6 MB in the beginning and 130.0 MB in the end (delta: 73.4 MB). Free memory was 32.5 MB in the beginning and 56.0 MB in the end (delta: -23.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,728 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:17:14,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.53 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 32.5 MB in the end (delta: -276.9 kB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.36 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 30.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,731 INFO L168 Benchmark]: Boogie Preprocessor took 33.02 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 29.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:17:14,732 INFO L168 Benchmark]: RCFGBuilder took 662.74 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 36.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,732 INFO L168 Benchmark]: TraceAbstraction took 8275.72 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 36.3 MB in the beginning and 59.1 MB in the end (delta: -22.8 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,737 INFO L168 Benchmark]: Witness Printer took 98.39 ms. Allocated memory is still 130.0 MB. Free memory was 58.1 MB in the beginning and 56.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:17:14,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 869.53 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 32.5 MB in the end (delta: -276.9 kB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.36 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 30.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.02 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 29.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 662.74 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 36.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8275.72 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 36.3 MB in the beginning and 59.1 MB in the end (delta: -22.8 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 98.39 ms. Allocated memory is still 130.0 MB. Free memory was 58.1 MB in the beginning and 56.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 219 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 10 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.2s, 68 PlacesBefore, 14 PlacesAfterwards, 69 TransitionsBefore, 12 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 369 MoverChecksTotal - PositiveResult [Line: 706]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 47 SDtfs, 24 SDslu, 42 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 668 SizeOfPredicates, 1 NumberOfNonLiveVariables, 334 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...