./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.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-wmm/safe015_tso.opt.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 acb4e4cf9618679cb89bb556ee2ad72be1e1c078 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:08:22,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:08:22,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:08:22,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:08:22,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:08:22,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:08:22,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:08:22,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:08:22,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:08:22,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:08:22,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:08:22,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:08:22,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:08:22,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:08:22,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:08:22,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:08:22,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:08:22,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:08:22,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:08:22,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:08:22,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:08:22,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:08:22,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:08:22,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:08:22,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:08:22,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:08:22,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:08:22,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:08:22,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:08:22,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:08:22,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:08:22,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:08:22,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:08:22,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:08:22,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:08:22,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:08:22,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:08:22,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:08:22,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:08:22,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:08:22,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:08:22,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:08:22,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:08:22,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:08:22,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:08:22,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:08:22,839 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:08:22,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:08:22,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:08:22,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:08:22,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:08:22,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:08:22,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:08:22,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:08:22,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:08:22,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:08:22,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:08:22,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:08:22,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:08:22,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:08:22,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:08:22,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:08:22,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:08:22,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:22,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:08:22,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:08:22,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:08:22,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:08:22,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:08:22,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:08:22,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:08:22,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acb4e4cf9618679cb89bb556ee2ad72be1e1c078 [2020-12-02 12:08:23,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:08:23,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:08:23,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:08:23,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:08:23,312 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:08:23,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2020-12-02 12:08:23,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab88948a/f095f1419ef343a78c0d6c629fe2bd32/FLAG054b1ea16 [2020-12-02 12:08:24,068 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:08:24,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2020-12-02 12:08:24,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab88948a/f095f1419ef343a78c0d6c629fe2bd32/FLAG054b1ea16 [2020-12-02 12:08:24,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab88948a/f095f1419ef343a78c0d6c629fe2bd32 [2020-12-02 12:08:24,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:08:24,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:08:24,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:24,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:08:24,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:08:24,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:24" (1/1) ... [2020-12-02 12:08:24,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4d4f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:24, skipping insertion in model container [2020-12-02 12:08:24,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:24" (1/1) ... [2020-12-02 12:08:24,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:08:24,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:08:24,619 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-wmm/safe015_tso.opt.i[949,962] [2020-12-02 12:08:24,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:24,862 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:08:24,886 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-wmm/safe015_tso.opt.i[949,962] [2020-12-02 12:08:24,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:25,088 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:08:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25 WrapperNode [2020-12-02 12:08:25,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:25,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:25,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:08:25,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:08:25,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:25,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:08:25,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:08:25,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:08:25,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (1/1) ... [2020-12-02 12:08:25,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:08:25,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:08:25,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:08:25,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:08:25,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (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 12:08:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:08:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:08:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:08:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:08:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:08:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:08:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:08:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:08:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:08:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:08:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:08:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:08:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:08:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:08:25,296 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 12:08:25,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:08:25,791 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:08:25,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:25 BoogieIcfgContainer [2020-12-02 12:08:25,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:08:25,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:08:25,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:08:25,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:08:25,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:08:24" (1/3) ... [2020-12-02 12:08:25,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539eda01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:25, skipping insertion in model container [2020-12-02 12:08:25,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:25" (2/3) ... [2020-12-02 12:08:25,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539eda01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:25, skipping insertion in model container [2020-12-02 12:08:25,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:25" (3/3) ... [2020-12-02 12:08:25,804 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-12-02 12:08:25,820 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:08:25,821 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:08:25,825 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:08:25,827 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:08:25,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,887 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,888 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,913 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,913 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,914 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:25,924 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:08:25,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:08:25,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:08:25,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:08:25,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:08:25,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:08:25,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:08:25,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:08:25,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:08:25,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:08:25,977 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:08:25,980 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:25,984 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:25,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:26,036 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:08:26,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:08:26,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:08:26,045 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:08:28,715 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:28,997 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:29,278 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2020-12-02 12:08:29,279 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:08:29,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-02 12:08:29,310 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:08:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:08:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:08:29,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:29,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:29,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2020-12-02 12:08:29,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:29,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367842164] [2020-12-02 12:08:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:29,720 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 12:08:29,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367842164] [2020-12-02 12:08:29,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:29,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:08:29,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620369310] [2020-12-02 12:08:29,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:08:29,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:29,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:08:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:08:29,751 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:08:29,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:29,821 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2020-12-02 12:08:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:08:29,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:08:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:29,847 INFO L225 Difference]: With dead ends: 457 [2020-12-02 12:08:29,848 INFO L226 Difference]: Without dead ends: 315 [2020-12-02 12:08:29,849 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 12:08:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-02 12:08:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2020-12-02 12:08:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-12-02 12:08:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2020-12-02 12:08:29,945 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2020-12-02 12:08:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:29,947 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2020-12-02 12:08:29,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:08:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2020-12-02 12:08:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:08:29,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:29,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:29,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:08:29,949 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:29,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2020-12-02 12:08:29,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:29,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980728180] [2020-12-02 12:08:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,080 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 12:08:30,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980728180] [2020-12-02 12:08:30,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:30,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737970928] [2020-12-02 12:08:30,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:30,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:30,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,089 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2020-12-02 12:08:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,136 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2020-12-02 12:08:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:30,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:08:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,141 INFO L225 Difference]: With dead ends: 293 [2020-12-02 12:08:30,141 INFO L226 Difference]: Without dead ends: 293 [2020-12-02 12:08:30,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-02 12:08:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-12-02 12:08:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-02 12:08:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2020-12-02 12:08:30,169 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2020-12-02 12:08:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,170 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2020-12-02 12:08:30,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2020-12-02 12:08:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:30,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:08:30,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2020-12-02 12:08:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911860341] [2020-12-02 12:08:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,284 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 12:08:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911860341] [2020-12-02 12:08:30,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:30,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072057672] [2020-12-02 12:08:30,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:30,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,288 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2020-12-02 12:08:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,316 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2020-12-02 12:08:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:30,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:08:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,319 INFO L225 Difference]: With dead ends: 282 [2020-12-02 12:08:30,319 INFO L226 Difference]: Without dead ends: 282 [2020-12-02 12:08:30,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-02 12:08:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2020-12-02 12:08:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-02 12:08:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2020-12-02 12:08:30,342 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2020-12-02 12:08:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,343 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2020-12-02 12:08:30,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2020-12-02 12:08:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:30,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:08:30,346 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2020-12-02 12:08:30,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857300322] [2020-12-02 12:08:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,410 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 12:08:30,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857300322] [2020-12-02 12:08:30,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:30,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89825058] [2020-12-02 12:08:30,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:30,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,416 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2020-12-02 12:08:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,450 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2020-12-02 12:08:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:30,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:08:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,453 INFO L225 Difference]: With dead ends: 264 [2020-12-02 12:08:30,454 INFO L226 Difference]: Without dead ends: 264 [2020-12-02 12:08:30,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-02 12:08:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-12-02 12:08:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-02 12:08:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2020-12-02 12:08:30,469 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2020-12-02 12:08:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,469 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2020-12-02 12:08:30,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:30,470 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2020-12-02 12:08:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:08:30,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:08:30,473 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2020-12-02 12:08:30,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368042636] [2020-12-02 12:08:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,533 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 12:08:30,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368042636] [2020-12-02 12:08:30,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:30,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472149576] [2020-12-02 12:08:30,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:30,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,537 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2020-12-02 12:08:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,558 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2020-12-02 12:08:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:30,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:08:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,561 INFO L225 Difference]: With dead ends: 252 [2020-12-02 12:08:30,562 INFO L226 Difference]: Without dead ends: 252 [2020-12-02 12:08:30,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-02 12:08:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2020-12-02 12:08:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-02 12:08:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2020-12-02 12:08:30,573 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2020-12-02 12:08:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,573 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2020-12-02 12:08:30,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2020-12-02 12:08:30,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:30,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:08:30,577 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,577 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2020-12-02 12:08:30,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764284278] [2020-12-02 12:08:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,650 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 12:08:30,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764284278] [2020-12-02 12:08:30,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:30,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491569336] [2020-12-02 12:08:30,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:30,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:30,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:30,654 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2020-12-02 12:08:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,697 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2020-12-02 12:08:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:30,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:08:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,700 INFO L225 Difference]: With dead ends: 304 [2020-12-02 12:08:30,700 INFO L226 Difference]: Without dead ends: 200 [2020-12-02 12:08:30,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-02 12:08:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2020-12-02 12:08:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-02 12:08:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2020-12-02 12:08:30,712 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2020-12-02 12:08:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,712 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2020-12-02 12:08:30,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2020-12-02 12:08:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:30,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:08:30,715 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2020-12-02 12:08:30,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31900282] [2020-12-02 12:08:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:30,841 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 12:08:30,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31900282] [2020-12-02 12:08:30,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:30,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:30,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013122222] [2020-12-02 12:08:30,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:30,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:30,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:30,846 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2020-12-02 12:08:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:30,890 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2020-12-02 12:08:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:30,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:08:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:30,893 INFO L225 Difference]: With dead ends: 228 [2020-12-02 12:08:30,893 INFO L226 Difference]: Without dead ends: 148 [2020-12-02 12:08:30,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-02 12:08:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2020-12-02 12:08:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-02 12:08:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2020-12-02 12:08:30,901 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2020-12-02 12:08:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:30,902 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2020-12-02 12:08:30,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2020-12-02 12:08:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:30,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:30,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:30,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:08:30,904 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:30,905 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2020-12-02 12:08:30,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:30,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774712889] [2020-12-02 12:08:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:31,009 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 12:08:31,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774712889] [2020-12-02 12:08:31,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:31,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:31,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176160210] [2020-12-02 12:08:31,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:31,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:31,017 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2020-12-02 12:08:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:31,050 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2020-12-02 12:08:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:31,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:08:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:31,052 INFO L225 Difference]: With dead ends: 138 [2020-12-02 12:08:31,052 INFO L226 Difference]: Without dead ends: 106 [2020-12-02 12:08:31,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-02 12:08:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-02 12:08:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-02 12:08:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2020-12-02 12:08:31,057 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2020-12-02 12:08:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:31,057 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2020-12-02 12:08:31,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2020-12-02 12:08:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:08:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:31,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:31,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:08:31,059 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2020-12-02 12:08:31,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:31,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127673511] [2020-12-02 12:08:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:31,107 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 12:08:31,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127673511] [2020-12-02 12:08:31,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:31,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:31,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478495600] [2020-12-02 12:08:31,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:31,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:31,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:31,110 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2020-12-02 12:08:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:31,147 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2020-12-02 12:08:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:31,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:08:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:31,149 INFO L225 Difference]: With dead ends: 101 [2020-12-02 12:08:31,149 INFO L226 Difference]: Without dead ends: 81 [2020-12-02 12:08:31,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-02 12:08:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-02 12:08:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-02 12:08:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2020-12-02 12:08:31,153 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2020-12-02 12:08:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:31,154 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2020-12-02 12:08:31,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2020-12-02 12:08:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:08:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:31,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:31,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:08:31,155 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2020-12-02 12:08:31,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:31,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581301782] [2020-12-02 12:08:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:31,219 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 12:08:31,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581301782] [2020-12-02 12:08:31,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:31,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008064226] [2020-12-02 12:08:31,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:31,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:31,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:31,222 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2020-12-02 12:08:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:31,252 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-12-02 12:08:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:31,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:08:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:31,253 INFO L225 Difference]: With dead ends: 76 [2020-12-02 12:08:31,253 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:08:31,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:08:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:08:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:08:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:08:31,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:08:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:31,255 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:08:31,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:08:31,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:08:31,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:08:31,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:08:31 BasicIcfg [2020-12-02 12:08:31,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:08:31,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:08:31,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:08:31,262 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:08:31,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:25" (3/4) ... [2020-12-02 12:08:31,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:08:31,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:08:31,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:08:31,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:08:31,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:08:31,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:08:31,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:31,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:31,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:08:31,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:08:31,332 INFO L168 Benchmark]: Toolchain (without parser) took 7001.69 ms. Allocated memory was 48.2 MB in the beginning and 136.3 MB in the end (delta: 88.1 MB). Free memory was 24.2 MB in the beginning and 103.0 MB in the end (delta: -78.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,333 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory is still 29.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:31,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.49 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 31.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.76 ms. Allocated memory is still 58.7 MB. Free memory was 31.1 MB in the beginning and 29.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,335 INFO L168 Benchmark]: Boogie Preprocessor took 28.94 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 27.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,336 INFO L168 Benchmark]: RCFGBuilder took 619.55 ms. Allocated memory is still 58.7 MB. Free memory was 27.7 MB in the beginning and 38.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,337 INFO L168 Benchmark]: TraceAbstraction took 5464.63 ms. Allocated memory was 58.7 MB in the beginning and 136.3 MB in the end (delta: 77.6 MB). Free memory was 38.4 MB in the beginning and 106.1 MB in the end (delta: -67.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,338 INFO L168 Benchmark]: Witness Printer took 69.68 ms. Allocated memory is still 136.3 MB. Free memory was 106.1 MB in the beginning and 103.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:31,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory is still 29.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.49 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 31.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.76 ms. Allocated memory is still 58.7 MB. Free memory was 31.1 MB in the beginning and 29.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.94 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 27.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 619.55 ms. Allocated memory is still 58.7 MB. Free memory was 27.7 MB in the beginning and 38.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5464.63 ms. Allocated memory was 58.7 MB in the beginning and 136.3 MB in the end (delta: 77.6 MB). Free memory was 38.4 MB in the beginning and 106.1 MB in the end (delta: -67.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.68 ms. Allocated memory is still 136.3 MB. Free memory was 106.1 MB in the beginning and 103.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 MoverChecksTotal - PositiveResult [Line: 18]: 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 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...