./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.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/safe030_tso.oepc.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 cf3ac498255e2c15379e1132c88b889a830f4be4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:12:21,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:12:21,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:12:21,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:12:21,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:12:21,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:12:21,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:12:21,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:12:21,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:12:21,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:12:21,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:12:21,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:12:21,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:12:21,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:12:21,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:12:21,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:12:21,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:12:21,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:12:21,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:12:21,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:12:21,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:12:21,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:12:21,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:12:21,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:12:21,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:12:21,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:12:21,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:12:21,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:12:21,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:12:21,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:12:21,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:12:21,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:12:21,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:12:21,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:12:21,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:12:21,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:12:21,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:12:21,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:12:21,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:12:21,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:12:21,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:12:21,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:12:21,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:12:21,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:12:21,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:12:21,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:12:21,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:12:21,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:12:21,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:12:21,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:12:21,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:12:21,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:12:21,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:12:21,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:12:21,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:12:21,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:12:21,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:12:21,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:12:21,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:12:21,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:12:21,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:12:21,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:12:21,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:12:21,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:21,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:12:21,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:12:21,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:12:21,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:12:21,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:12:21,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:12:21,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:12:21,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf3ac498255e2c15379e1132c88b889a830f4be4 [2020-12-02 12:12:22,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:12:22,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:12:22,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:12:22,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:12:22,146 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:12:22,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-12-02 12:12:22,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a830b50f/49479f6d545c4aa49ce9459044b2ff0b/FLAGa3074f501 [2020-12-02 12:12:23,103 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:12:23,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-12-02 12:12:23,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a830b50f/49479f6d545c4aa49ce9459044b2ff0b/FLAGa3074f501 [2020-12-02 12:12:23,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a830b50f/49479f6d545c4aa49ce9459044b2ff0b [2020-12-02 12:12:23,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:12:23,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:12:23,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:23,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:12:23,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:12:23,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:23" (1/1) ... [2020-12-02 12:12:23,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6641f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:23, skipping insertion in model container [2020-12-02 12:12:23,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:23" (1/1) ... [2020-12-02 12:12:23,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:12:23,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:12:23,693 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/safe030_tso.oepc.i[950,963] [2020-12-02 12:12:23,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:23,932 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:12:23,949 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/safe030_tso.oepc.i[950,963] [2020-12-02 12:12:23,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:24,105 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:12:24,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24 WrapperNode [2020-12-02 12:12:24,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:24,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:24,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:12:24,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:12:24,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:24,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:12:24,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:12:24,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:12:24,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (1/1) ... [2020-12-02 12:12:24,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:12:24,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:12:24,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:12:24,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:12:24,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (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 12:12:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:12:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:12:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:12:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:12:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:12:24,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:12:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:12:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:12:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:12:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:12:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:12:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:12:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:12:24,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:12:24,333 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 12:12:24,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:12:24,782 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:12:24,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:24 BoogieIcfgContainer [2020-12-02 12:12:24,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:12:24,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:12:24,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:12:24,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:12:24,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:12:23" (1/3) ... [2020-12-02 12:12:24,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fabd0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:24, skipping insertion in model container [2020-12-02 12:12:24,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:24" (2/3) ... [2020-12-02 12:12:24,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fabd0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:24, skipping insertion in model container [2020-12-02 12:12:24,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:24" (3/3) ... [2020-12-02 12:12:24,797 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2020-12-02 12:12:24,817 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:12:24,817 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:12:24,821 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:12:24,823 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:12:24,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,869 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,869 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,873 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,873 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,874 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,880 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,880 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,886 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:24,893 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:12:24,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:12:24,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:12:24,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:12:24,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:12:24,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:12:24,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:12:24,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:12:24,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:12:24,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:12:24,948 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:12:24,951 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:24,958 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:24,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:25,033 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:12:25,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:12:25,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:12:25,042 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:12:27,470 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:12:27,682 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:12:28,135 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:12:28,439 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:12:28,555 INFO L131 LiptonReduction]: Checked pairs total: 2703 [2020-12-02 12:12:28,556 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-02 12:12:28,564 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:12:28,596 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:12:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:12:28,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:28,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:28,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:28,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:28,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1511125318, now seen corresponding path program 1 times [2020-12-02 12:12:28,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:28,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13708907] [2020-12-02 12:12:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:28,916 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 12:12:28,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13708907] [2020-12-02 12:12:28,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:28,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:28,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181656243] [2020-12-02 12:12:28,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:12:28,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:12:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:12:28,964 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:12:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:29,013 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:12:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:12:29,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:12:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:29,034 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:12:29,034 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:12:29,035 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 12:12:29,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:12:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:12:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:12:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:12:29,149 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:12:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:29,151 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:12:29,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:12:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:12:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:12:29,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:29,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:29,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:12:29,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:29,155 INFO L82 PathProgramCache]: Analyzing trace with hash -399770224, now seen corresponding path program 1 times [2020-12-02 12:12:29,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:29,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489964976] [2020-12-02 12:12:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:29,382 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 12:12:29,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489964976] [2020-12-02 12:12:29,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:29,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:29,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014757001] [2020-12-02 12:12:29,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:29,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:29,391 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:12:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:29,477 INFO L93 Difference]: Finished difference Result 518 states and 1456 transitions. [2020-12-02 12:12:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:29,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:12:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:29,488 INFO L225 Difference]: With dead ends: 518 [2020-12-02 12:12:29,489 INFO L226 Difference]: Without dead ends: 372 [2020-12-02 12:12:29,490 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 12:12:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-12-02 12:12:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 312. [2020-12-02 12:12:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-02 12:12:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2020-12-02 12:12:29,552 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 9 [2020-12-02 12:12:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:29,553 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2020-12-02 12:12:29,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2020-12-02 12:12:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:29,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:29,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:29,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:12:29,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:29,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:29,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875187, now seen corresponding path program 1 times [2020-12-02 12:12:29,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:29,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040619536] [2020-12-02 12:12:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:29,667 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 12:12:29,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040619536] [2020-12-02 12:12:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:29,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:29,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107839978] [2020-12-02 12:12:29,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:29,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:29,675 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 5 states. [2020-12-02 12:12:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:29,768 INFO L93 Difference]: Finished difference Result 430 states and 1110 transitions. [2020-12-02 12:12:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:29,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:29,772 INFO L225 Difference]: With dead ends: 430 [2020-12-02 12:12:29,772 INFO L226 Difference]: Without dead ends: 346 [2020-12-02 12:12:29,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-02 12:12:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 290. [2020-12-02 12:12:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-02 12:12:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 762 transitions. [2020-12-02 12:12:29,794 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 762 transitions. Word has length 10 [2020-12-02 12:12:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:29,795 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 762 transitions. [2020-12-02 12:12:29,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 762 transitions. [2020-12-02 12:12:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:29,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:29,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:29,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:12:29,804 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:29,808 INFO L82 PathProgramCache]: Analyzing trace with hash 345922742, now seen corresponding path program 1 times [2020-12-02 12:12:29,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:29,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126491031] [2020-12-02 12:12:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:29,911 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 12:12:29,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126491031] [2020-12-02 12:12:29,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:29,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:29,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426795215] [2020-12-02 12:12:29,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:29,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:29,914 INFO L87 Difference]: Start difference. First operand 290 states and 762 transitions. Second operand 5 states. [2020-12-02 12:12:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:29,973 INFO L93 Difference]: Finished difference Result 392 states and 1001 transitions. [2020-12-02 12:12:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:29,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:29,977 INFO L225 Difference]: With dead ends: 392 [2020-12-02 12:12:29,977 INFO L226 Difference]: Without dead ends: 326 [2020-12-02 12:12:29,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-02 12:12:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-12-02 12:12:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-02 12:12:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 698 transitions. [2020-12-02 12:12:29,989 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 698 transitions. Word has length 10 [2020-12-02 12:12:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:29,990 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 698 transitions. [2020-12-02 12:12:29,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 698 transitions. [2020-12-02 12:12:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:12:29,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:29,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:29,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:12:29,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2133634442, now seen corresponding path program 1 times [2020-12-02 12:12:29,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:29,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113731782] [2020-12-02 12:12:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,057 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 12:12:30,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113731782] [2020-12-02 12:12:30,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:30,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037985655] [2020-12-02 12:12:30,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:30,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:30,062 INFO L87 Difference]: Start difference. First operand 270 states and 698 transitions. Second operand 5 states. [2020-12-02 12:12:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,137 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2020-12-02 12:12:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:30,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:12:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,141 INFO L225 Difference]: With dead ends: 356 [2020-12-02 12:12:30,141 INFO L226 Difference]: Without dead ends: 312 [2020-12-02 12:12:30,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-02 12:12:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 260. [2020-12-02 12:12:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-02 12:12:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 664 transitions. [2020-12-02 12:12:30,155 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 664 transitions. Word has length 11 [2020-12-02 12:12:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,155 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 664 transitions. [2020-12-02 12:12:30,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 664 transitions. [2020-12-02 12:12:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:12:30,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:12:30,158 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,158 INFO L82 PathProgramCache]: Analyzing trace with hash -399190841, now seen corresponding path program 1 times [2020-12-02 12:12:30,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117720583] [2020-12-02 12:12:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,256 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 12:12:30,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117720583] [2020-12-02 12:12:30,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:30,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148024768] [2020-12-02 12:12:30,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:30,260 INFO L87 Difference]: Start difference. First operand 260 states and 664 transitions. Second operand 4 states. [2020-12-02 12:12:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,289 INFO L93 Difference]: Finished difference Result 362 states and 875 transitions. [2020-12-02 12:12:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:30,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:12:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,292 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:12:30,292 INFO L226 Difference]: Without dead ends: 284 [2020-12-02 12:12:30,293 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 12:12:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-12-02 12:12:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2020-12-02 12:12:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-02 12:12:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2020-12-02 12:12:30,304 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2020-12-02 12:12:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,304 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2020-12-02 12:12:30,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2020-12-02 12:12:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:12:30,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:12:30,306 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash -932777299, now seen corresponding path program 1 times [2020-12-02 12:12:30,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681981181] [2020-12-02 12:12:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,386 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 12:12:30,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681981181] [2020-12-02 12:12:30,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:30,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076784442] [2020-12-02 12:12:30,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:30,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:30,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:30,392 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 4 states. [2020-12-02 12:12:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,428 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2020-12-02 12:12:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:30,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:12:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,431 INFO L225 Difference]: With dead ends: 248 [2020-12-02 12:12:30,431 INFO L226 Difference]: Without dead ends: 187 [2020-12-02 12:12:30,432 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 12:12:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-02 12:12:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-02 12:12:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-02 12:12:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2020-12-02 12:12:30,440 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2020-12-02 12:12:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,441 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2020-12-02 12:12:30,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2020-12-02 12:12:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:12:30,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:12:30,447 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1335013917, now seen corresponding path program 1 times [2020-12-02 12:12:30,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933281591] [2020-12-02 12:12:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,543 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 12:12:30,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933281591] [2020-12-02 12:12:30,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:30,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793742323] [2020-12-02 12:12:30,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:30,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:30,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:30,548 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand 5 states. [2020-12-02 12:12:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,597 INFO L93 Difference]: Finished difference Result 267 states and 539 transitions. [2020-12-02 12:12:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:30,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:12:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,600 INFO L225 Difference]: With dead ends: 267 [2020-12-02 12:12:30,600 INFO L226 Difference]: Without dead ends: 221 [2020-12-02 12:12:30,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-02 12:12:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2020-12-02 12:12:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-02 12:12:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2020-12-02 12:12:30,608 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2020-12-02 12:12:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,609 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2020-12-02 12:12:30,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2020-12-02 12:12:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:12:30,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:12:30,611 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1081898830, now seen corresponding path program 1 times [2020-12-02 12:12:30,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447732817] [2020-12-02 12:12:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,705 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 12:12:30,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447732817] [2020-12-02 12:12:30,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305957717] [2020-12-02 12:12:30,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:30,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:30,711 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand 5 states. [2020-12-02 12:12:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,757 INFO L93 Difference]: Finished difference Result 258 states and 510 transitions. [2020-12-02 12:12:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:30,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:12:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,759 INFO L225 Difference]: With dead ends: 258 [2020-12-02 12:12:30,760 INFO L226 Difference]: Without dead ends: 212 [2020-12-02 12:12:30,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-02 12:12:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2020-12-02 12:12:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-02 12:12:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2020-12-02 12:12:30,767 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2020-12-02 12:12:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,769 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2020-12-02 12:12:30,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2020-12-02 12:12:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:12:30,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:12:30,770 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,771 INFO L82 PathProgramCache]: Analyzing trace with hash -144595800, now seen corresponding path program 1 times [2020-12-02 12:12:30,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322691975] [2020-12-02 12:12:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,851 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 12:12:30,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322691975] [2020-12-02 12:12:30,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:30,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705079685] [2020-12-02 12:12:30,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:30,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:30,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:30,854 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand 5 states. [2020-12-02 12:12:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:30,899 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2020-12-02 12:12:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:12:30,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:12:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:30,901 INFO L225 Difference]: With dead ends: 147 [2020-12-02 12:12:30,901 INFO L226 Difference]: Without dead ends: 96 [2020-12-02 12:12:30,902 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 12:12:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-02 12:12:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-02 12:12:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-02 12:12:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2020-12-02 12:12:30,906 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2020-12-02 12:12:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:30,906 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2020-12-02 12:12:30,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2020-12-02 12:12:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:12:30,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:30,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:30,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:12:30,908 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1619656222, now seen corresponding path program 1 times [2020-12-02 12:12:30,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:30,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022324177] [2020-12-02 12:12:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:30,981 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 12:12:30,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022324177] [2020-12-02 12:12:30,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:30,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:12:30,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331613122] [2020-12-02 12:12:30,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:12:30,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:30,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:12:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:12:30,985 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand 6 states. [2020-12-02 12:12:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:31,017 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2020-12-02 12:12:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:12:31,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:12:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:31,018 INFO L225 Difference]: With dead ends: 82 [2020-12-02 12:12:31,018 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:12:31,019 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 12:12:31,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:12:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:12:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:12:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:12:31,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:12:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:31,021 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:12:31,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:12:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:12:31,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:12:31,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:12:31,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:12:31 BasicIcfg [2020-12-02 12:12:31,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:12:31,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:12:31,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:12:31,028 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:12:31,029 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:24" (3/4) ... [2020-12-02 12:12:31,033 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:12:31,041 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:12:31,041 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:12:31,041 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:12:31,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:12:31,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:12:31,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:31,048 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:31,088 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:12:31,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:12:31,090 INFO L168 Benchmark]: Toolchain (without parser) took 7682.06 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 38.3 MB in the beginning and 50.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,090 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory is still 22.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:31,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.12 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 34.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.89 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 32.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,092 INFO L168 Benchmark]: Boogie Preprocessor took 32.11 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 30.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:31,093 INFO L168 Benchmark]: RCFGBuilder took 575.74 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 22.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,093 INFO L168 Benchmark]: TraceAbstraction took 6239.94 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 22.5 MB in the beginning and 53.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,094 INFO L168 Benchmark]: Witness Printer took 60.33 ms. Allocated memory is still 119.5 MB. Free memory was 53.2 MB in the beginning and 50.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:31,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory is still 22.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 694.12 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 34.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.89 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 32.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.11 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 30.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 575.74 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 22.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6239.94 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 22.5 MB in the beginning and 53.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 60.33 ms. Allocated memory is still 119.5 MB. Free memory was 53.2 MB in the beginning and 50.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 805 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2703 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 297 SDtfs, 279 SDslu, 464 SDs, 0 SdLazy, 155 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 358 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...