./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.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/safe014_pso.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 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:08:10,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:08:10,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:08:10,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:08:10,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:08:10,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:08:10,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:08:10,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:08:10,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:08:10,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:08:10,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:08:10,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:08:10,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:08:10,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:08:10,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:08:10,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:08:10,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:08:10,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:08:10,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:08:10,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:08:10,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:08:10,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:08:10,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:08:10,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:08:10,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:08:10,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:08:10,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:08:10,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:08:10,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:08:10,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:08:10,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:08:10,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:08:10,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:08:10,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:08:10,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:08:10,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:08:10,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:08:10,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:08:10,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:08:10,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:08:10,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:08:10,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:08:10,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:08:10,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:08:10,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:08:10,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:08:10,822 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:08:10,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:08:10,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:08:10,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:08:10,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:08:10,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:08:10,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:08:10,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:08:10,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:08:10,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:08:10,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:08:10,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:08:10,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:08:10,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:08:10,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:08:10,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:08:10,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:08:10,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:10,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:08:10,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:08:10,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:08:10,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:08:10,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:08:10,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:08:10,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:08:10,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c [2020-12-02 12:08:11,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:08:11,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:08:11,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:08:11,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:08:11,334 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:08:11,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-12-02 12:08:11,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e152c0/24955a6e59344dac9a6eeb42ada5fe9b/FLAGd2170c115 [2020-12-02 12:08:12,259 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:08:12,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-12-02 12:08:12,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e152c0/24955a6e59344dac9a6eeb42ada5fe9b/FLAGd2170c115 [2020-12-02 12:08:12,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e152c0/24955a6e59344dac9a6eeb42ada5fe9b [2020-12-02 12:08:12,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:08:12,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:08:12,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:12,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:08:12,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:08:12,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:12" (1/1) ... [2020-12-02 12:08:12,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf5906e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:12, skipping insertion in model container [2020-12-02 12:08:12,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:12" (1/1) ... [2020-12-02 12:08:12,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:08:12,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:08:12,739 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/safe014_pso.opt.i[949,962] [2020-12-02 12:08:12,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:12,933 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:08:12,953 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/safe014_pso.opt.i[949,962] [2020-12-02 12:08:13,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:13,142 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:08:13,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13 WrapperNode [2020-12-02 12:08:13,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:13,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:13,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:08:13,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:08:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:13,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:08:13,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:08:13,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:08:13,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (1/1) ... [2020-12-02 12:08:13,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:08:13,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:08:13,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:08:13,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:08:13,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (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 12:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:08:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:08:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:08:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:08:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:08:13,350 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 12:08:13,695 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:08:13,695 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:08:13,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:13 BoogieIcfgContainer [2020-12-02 12:08:13,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:08:13,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:08:13,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:08:13,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:08:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:08:12" (1/3) ... [2020-12-02 12:08:13,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a857f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:13, skipping insertion in model container [2020-12-02 12:08:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:13" (2/3) ... [2020-12-02 12:08:13,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a857f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:13, skipping insertion in model container [2020-12-02 12:08:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:13" (3/3) ... [2020-12-02 12:08:13,706 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-12-02 12:08:13,723 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:08:13,723 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:08:13,727 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:08:13,728 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:08:13,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,761 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,764 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,768 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,768 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,785 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,785 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,786 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,788 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,788 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:13,791 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:08:13,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:08:13,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:08:13,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:08:13,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:08:13,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:08:13,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:08:13,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:08:13,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:08:13,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:08:13,841 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:08:13,843 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:13,846 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:13,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:13,901 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:08:13,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:08:13,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:08:13,914 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:08:16,641 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:08:16,947 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:08:17,035 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-02 12:08:17,036 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-02 12:08:17,043 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:08:17,074 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:08:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:08:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:08:17,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:17,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:17,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-02 12:08:17,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:17,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838338914] [2020-12-02 12:08:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:17,287 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 12:08:17,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838338914] [2020-12-02 12:08:17,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:17,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099793908] [2020-12-02 12:08:17,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:08:17,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:17,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:08:17,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:17,320 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:08:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:17,356 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:08:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:08:17,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:08:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:17,379 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:08:17,380 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:08:17,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:08:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:08:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:08:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:08:17,532 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:08:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:17,534 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:08:17,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:08:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:08:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:08:17,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:17,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:17,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:08:17,539 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-02 12:08:17,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:17,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391836809] [2020-12-02 12:08:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:17,726 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 12:08:17,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391836809] [2020-12-02 12:08:17,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:17,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:17,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118143363] [2020-12-02 12:08:17,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:17,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:17,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:17,733 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:08:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:17,778 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-02 12:08:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:17,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:08:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:17,783 INFO L225 Difference]: With dead ends: 330 [2020-12-02 12:08:17,783 INFO L226 Difference]: Without dead ends: 266 [2020-12-02 12:08:17,784 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 12:08:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-02 12:08:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-02 12:08:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-02 12:08:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-02 12:08:17,808 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-02 12:08:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:17,808 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-02 12:08:17,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-02 12:08:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:17,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:17,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:17,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:08:17,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash 744680885, now seen corresponding path program 1 times [2020-12-02 12:08:17,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:17,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027862361] [2020-12-02 12:08:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:17,970 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 12:08:17,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027862361] [2020-12-02 12:08:17,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:17,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:17,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317010354] [2020-12-02 12:08:17,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:17,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:17,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:17,974 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-02 12:08:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,037 INFO L93 Difference]: Finished difference Result 362 states and 1008 transitions. [2020-12-02 12:08:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:18,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:08:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,041 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:08:18,041 INFO L226 Difference]: Without dead ends: 218 [2020-12-02 12:08:18,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:08:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-02 12:08:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-02 12:08:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-02 12:08:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 592 transitions. [2020-12-02 12:08:18,052 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 592 transitions. Word has length 10 [2020-12-02 12:08:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,052 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 592 transitions. [2020-12-02 12:08:18,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 592 transitions. [2020-12-02 12:08:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:08:18,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:08:18,055 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1281410722, now seen corresponding path program 1 times [2020-12-02 12:08:18,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028676083] [2020-12-02 12:08:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,128 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 12:08:18,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028676083] [2020-12-02 12:08:18,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:18,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441936184] [2020-12-02 12:08:18,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:18,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:18,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:18,132 INFO L87 Difference]: Start difference. First operand 218 states and 592 transitions. Second operand 5 states. [2020-12-02 12:08:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,194 INFO L93 Difference]: Finished difference Result 278 states and 737 transitions. [2020-12-02 12:08:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:18,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:08:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,196 INFO L225 Difference]: With dead ends: 278 [2020-12-02 12:08:18,197 INFO L226 Difference]: Without dead ends: 170 [2020-12-02 12:08:18,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:08:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-02 12:08:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-02 12:08:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-02 12:08:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-02 12:08:18,214 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-12-02 12:08:18,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,215 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-02 12:08:18,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-02 12:08:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:18,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:08:18,217 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,218 INFO L82 PathProgramCache]: Analyzing trace with hash -663598862, now seen corresponding path program 1 times [2020-12-02 12:08:18,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755202723] [2020-12-02 12:08:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,280 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 12:08:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755202723] [2020-12-02 12:08:18,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:18,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069976546] [2020-12-02 12:08:18,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:18,284 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-02 12:08:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,309 INFO L93 Difference]: Finished difference Result 182 states and 446 transitions. [2020-12-02 12:08:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:18,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:08:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,311 INFO L225 Difference]: With dead ends: 182 [2020-12-02 12:08:18,311 INFO L226 Difference]: Without dead ends: 158 [2020-12-02 12:08:18,312 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 12:08:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-02 12:08:18,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-12-02 12:08:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-02 12:08:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-12-02 12:08:18,317 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 12 [2020-12-02 12:08:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,318 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-12-02 12:08:18,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-12-02 12:08:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:08:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:08:18,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1497460825, now seen corresponding path program 1 times [2020-12-02 12:08:18,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900086033] [2020-12-02 12:08:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,404 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 12:08:18,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900086033] [2020-12-02 12:08:18,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:18,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599904440] [2020-12-02 12:08:18,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:18,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:18,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:18,407 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 6 states. [2020-12-02 12:08:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,474 INFO L93 Difference]: Finished difference Result 196 states and 471 transitions. [2020-12-02 12:08:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 12:08:18,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 12:08:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,475 INFO L225 Difference]: With dead ends: 196 [2020-12-02 12:08:18,475 INFO L226 Difference]: Without dead ends: 64 [2020-12-02 12:08:18,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-02 12:08:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-02 12:08:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-02 12:08:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 12:08:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2020-12-02 12:08:18,479 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2020-12-02 12:08:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2020-12-02 12:08:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2020-12-02 12:08:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:08:18,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:08:18,481 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2020-12-02 12:08:18,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399375942] [2020-12-02 12:08:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,538 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 12:08:18,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399375942] [2020-12-02 12:08:18,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:18,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016491539] [2020-12-02 12:08:18,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:18,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:18,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:18,541 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2020-12-02 12:08:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,564 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2020-12-02 12:08:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:18,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:08:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,566 INFO L225 Difference]: With dead ends: 66 [2020-12-02 12:08:18,566 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 12:08:18,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:08:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 12:08:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-02 12:08:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 12:08:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-02 12:08:18,570 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-12-02 12:08:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,570 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-02 12:08:18,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-02 12:08:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:08:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:08:18,572 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2020-12-02 12:08:18,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155736862] [2020-12-02 12:08:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,638 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 12:08:18,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155736862] [2020-12-02 12:08:18,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:18,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245469852] [2020-12-02 12:08:18,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:18,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:18,641 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2020-12-02 12:08:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,674 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-12-02 12:08:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:18,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:08:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,675 INFO L225 Difference]: With dead ends: 42 [2020-12-02 12:08:18,676 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 12:08:18,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 12:08:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 12:08:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-02 12:08:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-02 12:08:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-12-02 12:08:18,678 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2020-12-02 12:08:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,679 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-12-02 12:08:18,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-12-02 12:08:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:08:18,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:18,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:18,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:08:18,680 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2020-12-02 12:08:18,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:18,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89602643] [2020-12-02 12:08:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:18,746 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 12:08:18,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89602643] [2020-12-02 12:08:18,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:18,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:08:18,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979143680] [2020-12-02 12:08:18,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:18,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:18,749 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-12-02 12:08:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:18,769 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-12-02 12:08:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:18,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:08:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:18,770 INFO L225 Difference]: With dead ends: 28 [2020-12-02 12:08:18,771 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:08:18,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:08:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:08:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:08:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:08:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:08:18,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:08:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:18,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:08:18,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:08:18,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:08:18,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:08:18,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:08:18 BasicIcfg [2020-12-02 12:08:18,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:08:18,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:08:18,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:08:18,779 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:08:18,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:13" (3/4) ... [2020-12-02 12:08:18,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:08:18,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:08:18,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:08:18,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:08:18,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:08:18,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:08:18,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:18,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:18,842 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:08:18,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:08:18,844 INFO L168 Benchmark]: Toolchain (without parser) took 6352.75 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 30.7 MB in the beginning and 75.1 MB in the end (delta: -44.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,845 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:18,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.78 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 36.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.57 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,847 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:18,848 INFO L168 Benchmark]: RCFGBuilder took 471.56 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 23.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,848 INFO L168 Benchmark]: TraceAbstraction took 5078.32 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 22.6 MB in the beginning and 78.2 MB in the end (delta: -55.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,849 INFO L168 Benchmark]: Witness Printer took 64.61 ms. Allocated memory is still 121.6 MB. Free memory was 78.2 MB in the beginning and 75.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:18,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.78 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 36.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.57 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 471.56 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 23.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5078.32 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 22.6 MB in the beginning and 78.2 MB in the end (delta: -55.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Witness Printer took 64.61 ms. Allocated memory is still 121.6 MB. Free memory was 78.2 MB in the beginning and 75.1 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 734 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 194 SDtfs, 200 SDslu, 288 SDs, 0 SdLazy, 122 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 4395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...