./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/sync01.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07a2cff325945f1e2c5f5bc34031b7ae099cedf8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:03:09,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:03:09,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:03:09,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:03:09,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:03:09,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:03:09,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:03:09,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:03:09,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:03:09,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:03:09,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:03:09,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:03:09,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:03:09,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:03:09,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:03:09,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:03:09,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:03:09,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:03:09,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:03:09,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:03:09,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:03:09,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:03:09,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:03:09,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:03:09,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:03:09,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:03:09,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:03:09,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:03:09,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:03:09,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:03:09,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:03:09,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:03:09,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:03:09,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:03:09,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:03:09,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:03:09,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:03:09,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:03:09,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:03:09,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:03:09,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:03:09,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:03:09,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:03:09,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:03:09,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:03:09,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:03:09,763 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:03:09,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:03:09,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:03:09,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:03:09,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:03:09,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:03:09,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:03:09,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:03:09,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:03:09,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:03:09,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:03:09,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:03:09,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:03:09,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:03:09,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:03:09,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:03:09,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:03:09,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:03:09,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:03:09,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer 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(__VERIFIER_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 -> 07a2cff325945f1e2c5f5bc34031b7ae099cedf8 [2019-11-20 05:03:09,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:03:09,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:03:09,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:03:09,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:03:09,935 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:03:09,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/../../sv-benchmarks/c/pthread/sync01.i [2019-11-20 05:03:10,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/data/f7b035b71/a0106e5217314fa0b89e7e8c59f2059b/FLAG01b0f7830 [2019-11-20 05:03:10,512 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:03:10,513 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/sv-benchmarks/c/pthread/sync01.i [2019-11-20 05:03:10,531 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/data/f7b035b71/a0106e5217314fa0b89e7e8c59f2059b/FLAG01b0f7830 [2019-11-20 05:03:10,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/data/f7b035b71/a0106e5217314fa0b89e7e8c59f2059b [2019-11-20 05:03:10,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:03:10,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:03:10,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:10,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:03:10,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:03:10,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:10" (1/1) ... [2019-11-20 05:03:10,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f85586a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:10, skipping insertion in model container [2019-11-20 05:03:10,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:10" (1/1) ... [2019-11-20 05:03:10,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:03:10,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:03:11,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:11,446 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:03:11,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:11,608 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:03:11,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11 WrapperNode [2019-11-20 05:03:11,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:11,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:11,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:03:11,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:03:11,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:11,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:03:11,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:03:11,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:03:11,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... [2019-11-20 05:03:11,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:03:11,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:03:11,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:03:11,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:03:11,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/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 [2019-11-20 05:03:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:03:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:03:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:03:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2019-11-20 05:03:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2019-11-20 05:03:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2019-11-20 05:03:11,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2019-11-20 05:03:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:03:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-20 05:03:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 05:03:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:03:11,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:03:11,750 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 05:03:12,196 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:03:12,197 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 05:03:12,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:12 BoogieIcfgContainer [2019-11-20 05:03:12,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:03:12,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:03:12,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:03:12,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:03:12,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:03:10" (1/3) ... [2019-11-20 05:03:12,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435619c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:12, skipping insertion in model container [2019-11-20 05:03:12,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:11" (2/3) ... [2019-11-20 05:03:12,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435619c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:12, skipping insertion in model container [2019-11-20 05:03:12,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:12" (3/3) ... [2019-11-20 05:03:12,205 INFO L109 eAbstractionObserver]: Analyzing ICFG sync01.i [2019-11-20 05:03:12,258 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,259 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,259 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,259 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,260 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,260 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,261 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,261 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,261 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,262 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,262 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,262 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,262 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,263 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,263 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,263 WARN L315 ript$VariableManager]: TermVariabe thread1Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,263 WARN L315 ript$VariableManager]: TermVariabe thread1Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,264 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,264 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,264 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,265 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,265 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,266 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,266 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,266 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,266 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,267 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,267 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,267 WARN L315 ript$VariableManager]: TermVariabe thread1Thread3of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,267 WARN L315 ript$VariableManager]: TermVariabe thread1Thread3of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,268 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,268 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,268 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,268 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,269 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,270 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,271 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,271 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,271 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,273 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,273 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,274 WARN L315 ript$VariableManager]: TermVariabe thread2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,274 WARN L315 ript$VariableManager]: TermVariabe thread2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,274 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,275 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,275 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,276 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,276 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,276 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,277 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,277 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,277 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,278 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,278 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,278 WARN L315 ript$VariableManager]: TermVariabe thread2Thread3of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,278 WARN L315 ript$VariableManager]: TermVariabe thread2Thread3of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,278 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,279 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,280 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,280 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,286 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,286 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,286 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,286 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,287 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,289 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,289 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,289 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,290 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,290 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,290 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,290 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,291 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,291 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,292 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,296 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,297 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,297 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:03:12,332 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 05:03:12,333 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:03:12,340 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:03:12,351 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:03:12,369 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:03:12,370 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:03:12,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:03:12,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:03:12,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:03:12,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:03:12,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:03:12,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:03:12,384 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 153 places, 161 transitions [2019-11-20 05:03:12,802 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5718 states. [2019-11-20 05:03:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states. [2019-11-20 05:03:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:12,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:12,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:12,847 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:12,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:12,853 INFO L82 PathProgramCache]: Analyzing trace with hash 914067684, now seen corresponding path program 1 times [2019-11-20 05:03:12,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:12,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690119] [2019-11-20 05:03:12,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:13,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690119] [2019-11-20 05:03:13,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:13,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:03:13,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659433031] [2019-11-20 05:03:13,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 05:03:13,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:13,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:03:13,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:03:13,101 INFO L87 Difference]: Start difference. First operand 5718 states. Second operand 2 states. [2019-11-20 05:03:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:13,189 INFO L93 Difference]: Finished difference Result 5718 states and 15175 transitions. [2019-11-20 05:03:13,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:03:13,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 68 [2019-11-20 05:03:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:13,257 INFO L225 Difference]: With dead ends: 5718 [2019-11-20 05:03:13,257 INFO L226 Difference]: Without dead ends: 5710 [2019-11-20 05:03:13,259 INFO L630 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 [2019-11-20 05:03:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2019-11-20 05:03:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5710. [2019-11-20 05:03:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5710 states. [2019-11-20 05:03:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 15167 transitions. [2019-11-20 05:03:13,594 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 15167 transitions. Word has length 68 [2019-11-20 05:03:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:13,596 INFO L462 AbstractCegarLoop]: Abstraction has 5710 states and 15167 transitions. [2019-11-20 05:03:13,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 05:03:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 15167 transitions. [2019-11-20 05:03:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:13,616 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:13,616 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:13,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1156438404, now seen corresponding path program 1 times [2019-11-20 05:03:13,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:13,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646138984] [2019-11-20 05:03:13,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:13,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646138984] [2019-11-20 05:03:13,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:13,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:03:13,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266596953] [2019-11-20 05:03:13,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:03:13,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:13,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:03:13,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:13,800 INFO L87 Difference]: Start difference. First operand 5710 states and 15167 transitions. Second operand 3 states. [2019-11-20 05:03:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:13,980 INFO L93 Difference]: Finished difference Result 3298 states and 8348 transitions. [2019-11-20 05:03:13,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:03:13,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-11-20 05:03:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:14,004 INFO L225 Difference]: With dead ends: 3298 [2019-11-20 05:03:14,004 INFO L226 Difference]: Without dead ends: 3298 [2019-11-20 05:03:14,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2019-11-20 05:03:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3298. [2019-11-20 05:03:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3298 states. [2019-11-20 05:03:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 8348 transitions. [2019-11-20 05:03:14,117 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 8348 transitions. Word has length 68 [2019-11-20 05:03:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:14,118 INFO L462 AbstractCegarLoop]: Abstraction has 3298 states and 8348 transitions. [2019-11-20 05:03:14,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:03:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 8348 transitions. [2019-11-20 05:03:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:14,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:14,128 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:14,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:14,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1005150542, now seen corresponding path program 2 times [2019-11-20 05:03:14,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:14,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277060623] [2019-11-20 05:03:14,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:14,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277060623] [2019-11-20 05:03:14,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:14,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 05:03:14,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700973971] [2019-11-20 05:03:14,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:03:14,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:14,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:03:14,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:03:14,306 INFO L87 Difference]: Start difference. First operand 3298 states and 8348 transitions. Second operand 5 states. [2019-11-20 05:03:14,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:14,570 INFO L93 Difference]: Finished difference Result 2254 states and 5132 transitions. [2019-11-20 05:03:14,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:03:14,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-11-20 05:03:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:14,586 INFO L225 Difference]: With dead ends: 2254 [2019-11-20 05:03:14,586 INFO L226 Difference]: Without dead ends: 2254 [2019-11-20 05:03:14,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:03:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2019-11-20 05:03:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2254. [2019-11-20 05:03:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2019-11-20 05:03:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 5132 transitions. [2019-11-20 05:03:14,646 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 5132 transitions. Word has length 68 [2019-11-20 05:03:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:14,647 INFO L462 AbstractCegarLoop]: Abstraction has 2254 states and 5132 transitions. [2019-11-20 05:03:14,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:03:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 5132 transitions. [2019-11-20 05:03:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:14,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:14,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:14,653 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash -469503960, now seen corresponding path program 1 times [2019-11-20 05:03:14,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:14,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62748711] [2019-11-20 05:03:14,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:14,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62748711] [2019-11-20 05:03:14,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:14,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:14,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508902522] [2019-11-20 05:03:14,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:14,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:14,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:14,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:14,772 INFO L87 Difference]: Start difference. First operand 2254 states and 5132 transitions. Second operand 7 states. [2019-11-20 05:03:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:15,069 INFO L93 Difference]: Finished difference Result 2285 states and 5173 transitions. [2019-11-20 05:03:15,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:03:15,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:15,087 INFO L225 Difference]: With dead ends: 2285 [2019-11-20 05:03:15,087 INFO L226 Difference]: Without dead ends: 2243 [2019-11-20 05:03:15,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:03:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2019-11-20 05:03:15,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2212. [2019-11-20 05:03:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-11-20 05:03:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 5019 transitions. [2019-11-20 05:03:15,153 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 5019 transitions. Word has length 68 [2019-11-20 05:03:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:15,154 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 5019 transitions. [2019-11-20 05:03:15,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 5019 transitions. [2019-11-20 05:03:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:15,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:15,164 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:15,165 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:15,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:15,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1866395914, now seen corresponding path program 3 times [2019-11-20 05:03:15,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:15,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655501179] [2019-11-20 05:03:15,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:15,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655501179] [2019-11-20 05:03:15,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:15,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:15,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489416712] [2019-11-20 05:03:15,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:15,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:15,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:15,359 INFO L87 Difference]: Start difference. First operand 2212 states and 5019 transitions. Second operand 7 states. [2019-11-20 05:03:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:15,530 INFO L93 Difference]: Finished difference Result 2640 states and 5985 transitions. [2019-11-20 05:03:15,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 05:03:15,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:15,544 INFO L225 Difference]: With dead ends: 2640 [2019-11-20 05:03:15,544 INFO L226 Difference]: Without dead ends: 2200 [2019-11-20 05:03:15,545 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2019-11-20 05:03:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1990. [2019-11-20 05:03:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-11-20 05:03:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 4445 transitions. [2019-11-20 05:03:15,599 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 4445 transitions. Word has length 68 [2019-11-20 05:03:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:15,599 INFO L462 AbstractCegarLoop]: Abstraction has 1990 states and 4445 transitions. [2019-11-20 05:03:15,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 4445 transitions. [2019-11-20 05:03:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:15,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:15,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:15,605 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:15,605 INFO L82 PathProgramCache]: Analyzing trace with hash -138092503, now seen corresponding path program 1 times [2019-11-20 05:03:15,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:15,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810515883] [2019-11-20 05:03:15,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:15,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810515883] [2019-11-20 05:03:15,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:15,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612873144] [2019-11-20 05:03:15,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:15,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:15,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:15,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:15,735 INFO L87 Difference]: Start difference. First operand 1990 states and 4445 transitions. Second operand 7 states. [2019-11-20 05:03:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:15,913 INFO L93 Difference]: Finished difference Result 2139 states and 4751 transitions. [2019-11-20 05:03:15,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 05:03:15,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:15,925 INFO L225 Difference]: With dead ends: 2139 [2019-11-20 05:03:15,925 INFO L226 Difference]: Without dead ends: 1915 [2019-11-20 05:03:15,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2019-11-20 05:03:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1759. [2019-11-20 05:03:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1759 states. [2019-11-20 05:03:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3901 transitions. [2019-11-20 05:03:15,967 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3901 transitions. Word has length 68 [2019-11-20 05:03:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:15,968 INFO L462 AbstractCegarLoop]: Abstraction has 1759 states and 3901 transitions. [2019-11-20 05:03:15,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3901 transitions. [2019-11-20 05:03:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:15,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:15,973 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:15,973 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:15,973 INFO L82 PathProgramCache]: Analyzing trace with hash 643008177, now seen corresponding path program 1 times [2019-11-20 05:03:15,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:15,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361615802] [2019-11-20 05:03:15,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:16,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361615802] [2019-11-20 05:03:16,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:16,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:16,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976342089] [2019-11-20 05:03:16,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:16,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:16,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:16,063 INFO L87 Difference]: Start difference. First operand 1759 states and 3901 transitions. Second operand 7 states. [2019-11-20 05:03:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:16,220 INFO L93 Difference]: Finished difference Result 1758 states and 3857 transitions. [2019-11-20 05:03:16,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:16,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:16,225 INFO L225 Difference]: With dead ends: 1758 [2019-11-20 05:03:16,225 INFO L226 Difference]: Without dead ends: 1513 [2019-11-20 05:03:16,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2019-11-20 05:03:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1465. [2019-11-20 05:03:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2019-11-20 05:03:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 3245 transitions. [2019-11-20 05:03:16,273 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 3245 transitions. Word has length 68 [2019-11-20 05:03:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:16,273 INFO L462 AbstractCegarLoop]: Abstraction has 1465 states and 3245 transitions. [2019-11-20 05:03:16,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 3245 transitions. [2019-11-20 05:03:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:16,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:16,277 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:16,278 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1775243843, now seen corresponding path program 1 times [2019-11-20 05:03:16,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:16,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743317833] [2019-11-20 05:03:16,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:16,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743317833] [2019-11-20 05:03:16,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:16,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:16,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912596256] [2019-11-20 05:03:16,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:16,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:16,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:16,410 INFO L87 Difference]: Start difference. First operand 1465 states and 3245 transitions. Second operand 7 states. [2019-11-20 05:03:16,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:16,672 INFO L93 Difference]: Finished difference Result 1496 states and 3286 transitions. [2019-11-20 05:03:16,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:03:16,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:16,676 INFO L225 Difference]: With dead ends: 1496 [2019-11-20 05:03:16,676 INFO L226 Difference]: Without dead ends: 1457 [2019-11-20 05:03:16,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:03:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2019-11-20 05:03:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1426. [2019-11-20 05:03:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2019-11-20 05:03:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3143 transitions. [2019-11-20 05:03:16,754 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3143 transitions. Word has length 68 [2019-11-20 05:03:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:16,754 INFO L462 AbstractCegarLoop]: Abstraction has 1426 states and 3143 transitions. [2019-11-20 05:03:16,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3143 transitions. [2019-11-20 05:03:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:16,757 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:16,758 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:16,758 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash 524545723, now seen corresponding path program 1 times [2019-11-20 05:03:16,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:16,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037722637] [2019-11-20 05:03:16,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:16,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037722637] [2019-11-20 05:03:16,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:16,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:16,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562134346] [2019-11-20 05:03:16,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:16,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:16,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:16,858 INFO L87 Difference]: Start difference. First operand 1426 states and 3143 transitions. Second operand 7 states. [2019-11-20 05:03:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:16,975 INFO L93 Difference]: Finished difference Result 1461 states and 3197 transitions. [2019-11-20 05:03:16,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:16,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:16,979 INFO L225 Difference]: With dead ends: 1461 [2019-11-20 05:03:16,979 INFO L226 Difference]: Without dead ends: 1237 [2019-11-20 05:03:16,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2019-11-20 05:03:17,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1213. [2019-11-20 05:03:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-11-20 05:03:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2661 transitions. [2019-11-20 05:03:17,011 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2661 transitions. Word has length 68 [2019-11-20 05:03:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:17,012 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 2661 transitions. [2019-11-20 05:03:17,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2661 transitions. [2019-11-20 05:03:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:17,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:17,015 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:17,015 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:17,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1318731952, now seen corresponding path program 1 times [2019-11-20 05:03:17,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:17,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751362501] [2019-11-20 05:03:17,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:17,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751362501] [2019-11-20 05:03:17,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:17,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:17,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877586272] [2019-11-20 05:03:17,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:17,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:17,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:17,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:17,131 INFO L87 Difference]: Start difference. First operand 1213 states and 2661 transitions. Second operand 7 states. [2019-11-20 05:03:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:17,243 INFO L93 Difference]: Finished difference Result 1248 states and 2715 transitions. [2019-11-20 05:03:17,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:17,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:17,245 INFO L225 Difference]: With dead ends: 1248 [2019-11-20 05:03:17,246 INFO L226 Difference]: Without dead ends: 1024 [2019-11-20 05:03:17,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-11-20 05:03:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1000. [2019-11-20 05:03:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2019-11-20 05:03:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 2179 transitions. [2019-11-20 05:03:17,266 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 2179 transitions. Word has length 68 [2019-11-20 05:03:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:17,267 INFO L462 AbstractCegarLoop]: Abstraction has 1000 states and 2179 transitions. [2019-11-20 05:03:17,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 2179 transitions. [2019-11-20 05:03:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:17,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:17,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:17,269 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1068440456, now seen corresponding path program 1 times [2019-11-20 05:03:17,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:17,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857548862] [2019-11-20 05:03:17,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:17,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857548862] [2019-11-20 05:03:17,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:17,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:17,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940411716] [2019-11-20 05:03:17,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:17,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:17,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:17,356 INFO L87 Difference]: Start difference. First operand 1000 states and 2179 transitions. Second operand 7 states. [2019-11-20 05:03:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:17,460 INFO L93 Difference]: Finished difference Result 1035 states and 2233 transitions. [2019-11-20 05:03:17,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:17,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:17,463 INFO L225 Difference]: With dead ends: 1035 [2019-11-20 05:03:17,463 INFO L226 Difference]: Without dead ends: 790 [2019-11-20 05:03:17,463 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-11-20 05:03:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 766. [2019-11-20 05:03:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2019-11-20 05:03:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1661 transitions. [2019-11-20 05:03:17,478 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1661 transitions. Word has length 68 [2019-11-20 05:03:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:17,478 INFO L462 AbstractCegarLoop]: Abstraction has 766 states and 1661 transitions. [2019-11-20 05:03:17,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1661 transitions. [2019-11-20 05:03:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:17,480 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:17,480 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:17,481 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:17,481 INFO L82 PathProgramCache]: Analyzing trace with hash -720445785, now seen corresponding path program 1 times [2019-11-20 05:03:17,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:17,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263518182] [2019-11-20 05:03:17,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:17,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263518182] [2019-11-20 05:03:17,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:17,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:17,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868664500] [2019-11-20 05:03:17,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:17,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:17,586 INFO L87 Difference]: Start difference. First operand 766 states and 1661 transitions. Second operand 7 states. [2019-11-20 05:03:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:17,736 INFO L93 Difference]: Finished difference Result 766 states and 1660 transitions. [2019-11-20 05:03:17,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:03:17,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:17,738 INFO L225 Difference]: With dead ends: 766 [2019-11-20 05:03:17,738 INFO L226 Difference]: Without dead ends: 727 [2019-11-20 05:03:17,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:03:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-20 05:03:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-20 05:03:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-20 05:03:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1559 transitions. [2019-11-20 05:03:17,750 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1559 transitions. Word has length 68 [2019-11-20 05:03:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:17,751 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1559 transitions. [2019-11-20 05:03:17,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1559 transitions. [2019-11-20 05:03:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:17,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:17,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:17,753 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:17,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1543908963, now seen corresponding path program 1 times [2019-11-20 05:03:17,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:17,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932465823] [2019-11-20 05:03:17,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:17,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932465823] [2019-11-20 05:03:17,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:17,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:17,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395980682] [2019-11-20 05:03:17,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:17,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:17,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:17,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:17,830 INFO L87 Difference]: Start difference. First operand 727 states and 1559 transitions. Second operand 7 states. [2019-11-20 05:03:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:17,909 INFO L93 Difference]: Finished difference Result 729 states and 1560 transitions. [2019-11-20 05:03:17,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:17,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:17,910 INFO L225 Difference]: With dead ends: 729 [2019-11-20 05:03:17,910 INFO L226 Difference]: Without dead ends: 505 [2019-11-20 05:03:17,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-11-20 05:03:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-11-20 05:03:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-20 05:03:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1064 transitions. [2019-11-20 05:03:17,920 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1064 transitions. Word has length 68 [2019-11-20 05:03:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:17,920 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 1064 transitions. [2019-11-20 05:03:17,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1064 transitions. [2019-11-20 05:03:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:17,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:17,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:17,922 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 489535026, now seen corresponding path program 1 times [2019-11-20 05:03:17,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:17,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609933774] [2019-11-20 05:03:17,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:17,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609933774] [2019-11-20 05:03:17,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:17,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:17,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587731529] [2019-11-20 05:03:17,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:17,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:17,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:17,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:17,995 INFO L87 Difference]: Start difference. First operand 505 states and 1064 transitions. Second operand 7 states. [2019-11-20 05:03:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:18,069 INFO L93 Difference]: Finished difference Result 507 states and 1065 transitions. [2019-11-20 05:03:18,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:18,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:18,070 INFO L225 Difference]: With dead ends: 507 [2019-11-20 05:03:18,070 INFO L226 Difference]: Without dead ends: 283 [2019-11-20 05:03:18,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-11-20 05:03:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2019-11-20 05:03:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2019-11-20 05:03:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 569 transitions. [2019-11-20 05:03:18,076 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 569 transitions. Word has length 68 [2019-11-20 05:03:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:18,076 INFO L462 AbstractCegarLoop]: Abstraction has 283 states and 569 transitions. [2019-11-20 05:03:18,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 569 transitions. [2019-11-20 05:03:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 05:03:18,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:18,077 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:18,078 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:18,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1158072154, now seen corresponding path program 1 times [2019-11-20 05:03:18,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:18,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217311028] [2019-11-20 05:03:18,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:18,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217311028] [2019-11-20 05:03:18,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:18,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:03:18,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38308380] [2019-11-20 05:03:18,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:03:18,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:03:18,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:03:18,147 INFO L87 Difference]: Start difference. First operand 283 states and 569 transitions. Second operand 7 states. [2019-11-20 05:03:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:18,207 INFO L93 Difference]: Finished difference Result 281 states and 567 transitions. [2019-11-20 05:03:18,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:03:18,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-11-20 05:03:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:18,207 INFO L225 Difference]: With dead ends: 281 [2019-11-20 05:03:18,207 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:03:18,208 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:03:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:03:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:03:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:03:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:03:18,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2019-11-20 05:03:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:18,208 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:03:18,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:03:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:03:18,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:03:18,211 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 05:03:18,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:03:18 BasicIcfg [2019-11-20 05:03:18,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:03:18,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:03:18,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:03:18,213 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:03:18,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:12" (3/4) ... [2019-11-20 05:03:18,217 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:03:18,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2019-11-20 05:03:18,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2019-11-20 05:03:18,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-20 05:03:18,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:03:18,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 05:03:18,267 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b8bf2893-4446-4499-8353-c75ab3f602d3/bin/uautomizer/witness.graphml [2019-11-20 05:03:18,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:03:18,269 INFO L168 Benchmark]: Toolchain (without parser) took 7465.91 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 328.7 MB). Free memory was 944.7 MB in the beginning and 997.4 MB in the end (delta: -52.7 MB). Peak memory consumption was 276.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,270 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:18,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,271 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:18,271 INFO L168 Benchmark]: RCFGBuilder took 512.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,271 INFO L168 Benchmark]: TraceAbstraction took 6013.44 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 40.5 MB). Peak memory consumption was 228.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,272 INFO L168 Benchmark]: Witness Printer took 54.71 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 997.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:18,273 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 796.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 512.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6013.44 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 40.5 MB). Peak memory consumption was 228.7 MB. Max. memory is 11.5 GB. * Witness Printer took 54.71 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 997.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 947]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 169 locations, 1 error locations. Result: SAFE, OverallTime: 5.8s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1958 SDtfs, 2174 SDslu, 5257 SDs, 0 SdLazy, 1228 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 30 SyntacticMatches, 9 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5718occurred 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: 0.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 548 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 154703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...