./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/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 eca14b1c5c5e18905aebb27c71c7fb4b781dcc00 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:28:38,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:28:38,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:28:38,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:28:38,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:28:38,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:28:38,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:28:38,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:28:38,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:28:38,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:28:38,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:28:38,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:28:38,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:28:38,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:28:38,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:28:38,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:28:38,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:28:38,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:28:38,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:28:38,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:28:38,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:28:38,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:28:38,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:28:38,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:28:38,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:28:38,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:28:38,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:28:38,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:28:38,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:28:38,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:28:38,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:28:38,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:28:38,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:28:38,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:28:38,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:28:38,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:28:38,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:28:38,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:28:38,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:28:38,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:28:38,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:28:38,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:28:38,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:28:38,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:28:38,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:28:38,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:28:38,822 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:28:38,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:28:38,822 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:28:38,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:28:38,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:28:38,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:28:38,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:28:38,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:28:38,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:28:38,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:28:38,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:28:38,825 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:28:38,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:28:38,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:28:38,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:28:38,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:28:38,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:28:38,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:28:38,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:28:38,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:28:38,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:28:38,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:28:38,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:28:38,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:28:38,829 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_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/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 -> eca14b1c5c5e18905aebb27c71c7fb4b781dcc00 [2019-11-15 22:28:38,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:28:38,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:28:38,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:28:38,891 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:28:38,891 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:28:38,892 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-11-15 22:28:38,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/data/bab00fec3/85ea31bdea404f0d8543c4b3b723b126/FLAGddc30f4cd [2019-11-15 22:28:39,417 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:28:39,417 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-11-15 22:28:39,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/data/bab00fec3/85ea31bdea404f0d8543c4b3b723b126/FLAGddc30f4cd [2019-11-15 22:28:39,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/data/bab00fec3/85ea31bdea404f0d8543c4b3b723b126 [2019-11-15 22:28:39,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:28:39,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:28:39,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:39,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:28:39,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:28:39,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:39" (1/1) ... [2019-11-15 22:28:39,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea50d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:39, skipping insertion in model container [2019-11-15 22:28:39,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:39" (1/1) ... [2019-11-15 22:28:39,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:28:39,502 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:28:39,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:39,912 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:28:39,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:40,029 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:28:40,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40 WrapperNode [2019-11-15 22:28:40,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:40,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:40,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:28:40,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:28:40,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:40,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:28:40,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:28:40,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:28:40,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... [2019-11-15 22:28:40,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:28:40,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:28:40,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:28:40,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:28:40,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/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 [2019-11-15 22:28:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:28:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 22:28:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:28:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:28:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-15 22:28:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-15 22:28:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-15 22:28:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-15 22:28:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-15 22:28:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-15 22:28:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-15 22:28:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-15 22:28:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 22:28:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:28:40,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:28:40,209 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:28:40,690 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:28:40,690 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 22:28:40,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:40 BoogieIcfgContainer [2019-11-15 22:28:40,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:28:40,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:28:40,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:28:40,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:28:40,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:28:39" (1/3) ... [2019-11-15 22:28:40,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44e95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:40, skipping insertion in model container [2019-11-15 22:28:40,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:40" (2/3) ... [2019-11-15 22:28:40,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44e95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:40, skipping insertion in model container [2019-11-15 22:28:40,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:40" (3/3) ... [2019-11-15 22:28:40,700 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2019-11-15 22:28:40,743 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,743 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,743 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,743 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,744 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,744 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,744 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,745 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,745 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,745 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,745 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,745 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,747 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,747 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,747 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,747 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,747 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,748 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:40,758 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:28:40,758 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:28:40,765 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:28:40,775 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:28:40,792 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:28:40,792 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:28:40,792 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:28:40,792 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:28:40,792 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:28:40,793 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:28:40,793 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:28:40,793 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:28:40,801 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions [2019-11-15 22:28:41,095 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5471 states. [2019-11-15 22:28:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states. [2019-11-15 22:28:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 22:28:41,118 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:41,119 INFO L380 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] [2019-11-15 22:28:41,121 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 585353023, now seen corresponding path program 1 times [2019-11-15 22:28:41,133 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:41,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230543718] [2019-11-15 22:28:41,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:41,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:41,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:41,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230543718] [2019-11-15 22:28:41,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:41,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:28:41,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320668049] [2019-11-15 22:28:41,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:28:41,445 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:41,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:28:41,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:28:41,460 INFO L87 Difference]: Start difference. First operand 5471 states. Second operand 4 states. [2019-11-15 22:28:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:41,642 INFO L93 Difference]: Finished difference Result 5708 states and 21933 transitions. [2019-11-15 22:28:41,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:28:41,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-11-15 22:28:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:41,696 INFO L225 Difference]: With dead ends: 5708 [2019-11-15 22:28:41,696 INFO L226 Difference]: Without dead ends: 2392 [2019-11-15 22:28:41,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:28:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2019-11-15 22:28:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2392. [2019-11-15 22:28:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2392 states. [2019-11-15 22:28:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 8936 transitions. [2019-11-15 22:28:41,918 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 8936 transitions. Word has length 34 [2019-11-15 22:28:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:41,919 INFO L462 AbstractCegarLoop]: Abstraction has 2392 states and 8936 transitions. [2019-11-15 22:28:41,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:28:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 8936 transitions. [2019-11-15 22:28:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 22:28:41,925 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:41,926 INFO L380 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] [2019-11-15 22:28:41,926 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:41,926 INFO L82 PathProgramCache]: Analyzing trace with hash -981384496, now seen corresponding path program 1 times [2019-11-15 22:28:41,927 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:41,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044600545] [2019-11-15 22:28:41,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:41,928 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:41,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:42,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044600545] [2019-11-15 22:28:42,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:42,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:28:42,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521318617] [2019-11-15 22:28:42,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:28:42,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:42,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:28:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:28:42,092 INFO L87 Difference]: Start difference. First operand 2392 states and 8936 transitions. Second operand 5 states. [2019-11-15 22:28:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:42,227 INFO L93 Difference]: Finished difference Result 2563 states and 9320 transitions. [2019-11-15 22:28:42,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:28:42,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-15 22:28:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:42,252 INFO L225 Difference]: With dead ends: 2563 [2019-11-15 22:28:42,253 INFO L226 Difference]: Without dead ends: 2308 [2019-11-15 22:28:42,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:28:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2019-11-15 22:28:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2308. [2019-11-15 22:28:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2019-11-15 22:28:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 8544 transitions. [2019-11-15 22:28:42,410 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 8544 transitions. Word has length 35 [2019-11-15 22:28:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:42,410 INFO L462 AbstractCegarLoop]: Abstraction has 2308 states and 8544 transitions. [2019-11-15 22:28:42,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:28:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 8544 transitions. [2019-11-15 22:28:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 22:28:42,415 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:42,416 INFO L380 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] [2019-11-15 22:28:42,416 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:42,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1178269862, now seen corresponding path program 1 times [2019-11-15 22:28:42,417 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:42,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019997062] [2019-11-15 22:28:42,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:42,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:42,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:42,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019997062] [2019-11-15 22:28:42,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:42,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:28:42,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334728834] [2019-11-15 22:28:42,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:28:42,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:28:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:28:42,528 INFO L87 Difference]: Start difference. First operand 2308 states and 8544 transitions. Second operand 6 states. [2019-11-15 22:28:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:42,652 INFO L93 Difference]: Finished difference Result 2173 states and 7680 transitions. [2019-11-15 22:28:42,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:28:42,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-11-15 22:28:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:42,670 INFO L225 Difference]: With dead ends: 2173 [2019-11-15 22:28:42,670 INFO L226 Difference]: Without dead ends: 1930 [2019-11-15 22:28:42,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:28:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2019-11-15 22:28:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1930. [2019-11-15 22:28:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2019-11-15 22:28:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 6906 transitions. [2019-11-15 22:28:42,741 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 6906 transitions. Word has length 36 [2019-11-15 22:28:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:42,741 INFO L462 AbstractCegarLoop]: Abstraction has 1930 states and 6906 transitions. [2019-11-15 22:28:42,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:28:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 6906 transitions. [2019-11-15 22:28:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:28:42,751 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:42,752 INFO L380 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] [2019-11-15 22:28:42,752 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1135335013, now seen corresponding path program 1 times [2019-11-15 22:28:42,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:42,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180331081] [2019-11-15 22:28:42,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:42,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:42,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:42,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180331081] [2019-11-15 22:28:42,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:42,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:28:42,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47459496] [2019-11-15 22:28:42,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:28:42,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:28:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:28:42,871 INFO L87 Difference]: Start difference. First operand 1930 states and 6906 transitions. Second operand 7 states. [2019-11-15 22:28:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:43,017 INFO L93 Difference]: Finished difference Result 1363 states and 4530 transitions. [2019-11-15 22:28:43,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:28:43,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 22:28:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:43,027 INFO L225 Difference]: With dead ends: 1363 [2019-11-15 22:28:43,027 INFO L226 Difference]: Without dead ends: 1174 [2019-11-15 22:28:43,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:28:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-11-15 22:28:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2019-11-15 22:28:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-11-15 22:28:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3882 transitions. [2019-11-15 22:28:43,070 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3882 transitions. Word has length 37 [2019-11-15 22:28:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:43,070 INFO L462 AbstractCegarLoop]: Abstraction has 1174 states and 3882 transitions. [2019-11-15 22:28:43,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:28:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3882 transitions. [2019-11-15 22:28:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 22:28:43,074 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:43,074 INFO L380 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] [2019-11-15 22:28:43,074 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1690221475, now seen corresponding path program 1 times [2019-11-15 22:28:43,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:43,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003710367] [2019-11-15 22:28:43,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:43,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:43,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:43,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003710367] [2019-11-15 22:28:43,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:43,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:28:43,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435270990] [2019-11-15 22:28:43,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:28:43,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:28:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:28:43,215 INFO L87 Difference]: Start difference. First operand 1174 states and 3882 transitions. Second operand 7 states. [2019-11-15 22:28:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:43,416 INFO L93 Difference]: Finished difference Result 2011 states and 6645 transitions. [2019-11-15 22:28:43,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:28:43,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-11-15 22:28:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:43,427 INFO L225 Difference]: With dead ends: 2011 [2019-11-15 22:28:43,429 INFO L226 Difference]: Without dead ends: 1372 [2019-11-15 22:28:43,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:28:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2019-11-15 22:28:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1102. [2019-11-15 22:28:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2019-11-15 22:28:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 3621 transitions. [2019-11-15 22:28:43,474 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 3621 transitions. Word has length 38 [2019-11-15 22:28:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:43,475 INFO L462 AbstractCegarLoop]: Abstraction has 1102 states and 3621 transitions. [2019-11-15 22:28:43,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:28:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 3621 transitions. [2019-11-15 22:28:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 22:28:43,478 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:43,478 INFO L380 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] [2019-11-15 22:28:43,478 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:43,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash -717133711, now seen corresponding path program 2 times [2019-11-15 22:28:43,479 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:43,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206588461] [2019-11-15 22:28:43,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:43,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:43,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:43,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206588461] [2019-11-15 22:28:43,597 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:43,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:28:43,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798612380] [2019-11-15 22:28:43,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:28:43,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:28:43,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:28:43,599 INFO L87 Difference]: Start difference. First operand 1102 states and 3621 transitions. Second operand 8 states. [2019-11-15 22:28:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:43,958 INFO L93 Difference]: Finished difference Result 2317 states and 7761 transitions. [2019-11-15 22:28:43,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 22:28:43,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-15 22:28:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:43,967 INFO L225 Difference]: With dead ends: 2317 [2019-11-15 22:28:43,968 INFO L226 Difference]: Without dead ends: 1054 [2019-11-15 22:28:43,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-11-15 22:28:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2019-11-15 22:28:44,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2019-11-15 22:28:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-11-15 22:28:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 3429 transitions. [2019-11-15 22:28:44,038 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 3429 transitions. Word has length 38 [2019-11-15 22:28:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:44,039 INFO L462 AbstractCegarLoop]: Abstraction has 1054 states and 3429 transitions. [2019-11-15 22:28:44,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:28:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 3429 transitions. [2019-11-15 22:28:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 22:28:44,042 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:44,042 INFO L380 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] [2019-11-15 22:28:44,042 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:44,042 INFO L82 PathProgramCache]: Analyzing trace with hash -111007957, now seen corresponding path program 3 times [2019-11-15 22:28:44,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:44,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810953304] [2019-11-15 22:28:44,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:44,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:44,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:44,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810953304] [2019-11-15 22:28:44,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:44,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:28:44,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907964806] [2019-11-15 22:28:44,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:28:44,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:28:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:28:44,211 INFO L87 Difference]: Start difference. First operand 1054 states and 3429 transitions. Second operand 8 states. [2019-11-15 22:28:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:44,318 INFO L93 Difference]: Finished difference Result 1567 states and 5211 transitions. [2019-11-15 22:28:44,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:28:44,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-15 22:28:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:44,325 INFO L225 Difference]: With dead ends: 1567 [2019-11-15 22:28:44,325 INFO L226 Difference]: Without dead ends: 727 [2019-11-15 22:28:44,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:28:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-15 22:28:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-15 22:28:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-15 22:28:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 2454 transitions. [2019-11-15 22:28:44,347 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 2454 transitions. Word has length 38 [2019-11-15 22:28:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:44,347 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 2454 transitions. [2019-11-15 22:28:44,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:28:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 2454 transitions. [2019-11-15 22:28:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 22:28:44,349 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:28:44,349 INFO L380 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] [2019-11-15 22:28:44,350 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:28:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:28:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash 669427239, now seen corresponding path program 4 times [2019-11-15 22:28:44,350 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:28:44,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52419078] [2019-11-15 22:28:44,351 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:44,351 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:28:44,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:28:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:28:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:28:44,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52419078] [2019-11-15 22:28:44,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:28:44,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:28:44,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730062642] [2019-11-15 22:28:44,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:28:44,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:28:44,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:28:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:28:44,473 INFO L87 Difference]: Start difference. First operand 727 states and 2454 transitions. Second operand 8 states. [2019-11-15 22:28:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:28:44,594 INFO L93 Difference]: Finished difference Result 565 states and 1860 transitions. [2019-11-15 22:28:44,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:28:44,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-15 22:28:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:28:44,595 INFO L225 Difference]: With dead ends: 565 [2019-11-15 22:28:44,595 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:28:44,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:28:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:28:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:28:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:28:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:28:44,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-11-15 22:28:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:28:44,596 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:28:44,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:28:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:28:44,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:28:44,600 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 22:28:44,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:28:44 BasicIcfg [2019-11-15 22:28:44,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:28:44,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:28:44,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:28:44,607 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:28:44,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:40" (3/4) ... [2019-11-15 22:28:44,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:28:44,618 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-15 22:28:44,618 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-15 22:28:44,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-15 22:28:44,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-15 22:28:44,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 22:28:44,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:28:44,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_95a3a1a9-acaf-487d-8ca8-e6d7caed2c78/bin/uautomizer/witness.graphml [2019-11-15 22:28:44,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:28:44,681 INFO L168 Benchmark]: Toolchain (without parser) took 5230.84 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 240.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,682 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-15 22:28:44,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.45 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. [2019-11-15 22:28:44,683 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,683 INFO L168 Benchmark]: RCFGBuilder took 566.57 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,684 INFO L168 Benchmark]: TraceAbstraction took 3913.41 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.5 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,684 INFO L168 Benchmark]: Witness Printer took 73.42 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:44,687 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 579.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.45 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. * Boogie Preprocessor took 51.84 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 566.57 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3913.41 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.5 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 73.42 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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, 79 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 765 SDslu, 1469 SDs, 0 SdLazy, 206 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5471occurred 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: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 270 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 33154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...