./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/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b23e0e98dc43bde29eaca457317d374968c17ab5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:48,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:48,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:49,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:49,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:49,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:49,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:49,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:49,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:49,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:49,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:49,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:49,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:49,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:49,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:49,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:49,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:49,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:49,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:49,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:49,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:49,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:49,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:49,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:49,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:49,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:49,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:49,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:49,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:49,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:49,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:49,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:49,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:49,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:49,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:49,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:49,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:49,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:49,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:49,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:49,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:49,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:49,079 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:49,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:49,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:49,092 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:49,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:49,092 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:49,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:49,092 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:49,092 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:49,093 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:49,093 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:49,093 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:49,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:49,094 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:49,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:49,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:49,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:49,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:49,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:49,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:49,095 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:49,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:49,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:49,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:49,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:49,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:49,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:49,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:49,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:49,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:49,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:49,097 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:49,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:49,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:49,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:49,098 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan 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 -> Taipan 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 -> b23e0e98dc43bde29eaca457317d374968c17ab5 [2019-10-22 11:25:49,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:49,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:49,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:49,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:49,158 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:49,159 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-10-22 11:25:49,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/data/6b22b1114/7b025f67494d442e8a02c927463f218e/FLAG983272faf [2019-10-22 11:25:49,688 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:49,690 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-10-22 11:25:49,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/data/6b22b1114/7b025f67494d442e8a02c927463f218e/FLAG983272faf [2019-10-22 11:25:50,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/data/6b22b1114/7b025f67494d442e8a02c927463f218e [2019-10-22 11:25:50,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:50,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:50,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:50,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:50,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:50,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d18724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50, skipping insertion in model container [2019-10-22 11:25:50,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:50,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:50,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,574 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:50,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,689 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:50,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50 WrapperNode [2019-10-22 11:25:50,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:50,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:50,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:50,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:50,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:50,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:50,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:50,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:50,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/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 [2019-10-22 11:25:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 11:25:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 11:25:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 11:25:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 11:25:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 11:25:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 11:25:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 11:25:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 11:25:50,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 11:25:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 11:25:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:50,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:50,827 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:25:51,093 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:51,093 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:25:51,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51 BoogieIcfgContainer [2019-10-22 11:25:51,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:51,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:51,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:51,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:51,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:50" (1/3) ... [2019-10-22 11:25:51,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73022e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:51, skipping insertion in model container [2019-10-22 11:25:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (2/3) ... [2019-10-22 11:25:51,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73022e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:51, skipping insertion in model container [2019-10-22 11:25:51,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51" (3/3) ... [2019-10-22 11:25:51,110 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2019-10-22 11:25:51,176 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,176 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,176 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,176 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,177 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,178 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,179 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,179 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,179 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,179 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,183 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,183 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,183 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,183 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,184 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,185 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,186 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,186 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,186 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,186 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:25:51,208 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:25:51,208 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:51,218 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:51,227 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:51,248 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:51,249 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:51,249 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:51,249 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:51,249 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:51,250 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:51,250 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:51,250 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:51,259 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 63 transitions [2019-10-22 11:25:52,455 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2019-10-22 11:25:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2019-10-22 11:25:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:25:52,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,498 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] [2019-10-22 11:25:52,501 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1523981989, now seen corresponding path program 1 times [2019-10-22 11:25:52,518 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:52,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609200713] [2019-10-22 11:25:52,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:52,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609200713] [2019-10-22 11:25:52,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:52,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128461891] [2019-10-22 11:25:52,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:52,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:52,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:52,861 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2019-10-22 11:25:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:53,138 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2019-10-22 11:25:53,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:53,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-10-22 11:25:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:53,210 INFO L225 Difference]: With dead ends: 13741 [2019-10-22 11:25:53,211 INFO L226 Difference]: Without dead ends: 5628 [2019-10-22 11:25:53,212 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 [2019-10-22 11:25:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2019-10-22 11:25:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2019-10-22 11:25:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2019-10-22 11:25:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2019-10-22 11:25:53,524 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2019-10-22 11:25:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:53,526 INFO L462 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2019-10-22 11:25:53,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2019-10-22 11:25:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:25:53,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:53,534 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] [2019-10-22 11:25:53,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:53,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2033993381, now seen corresponding path program 1 times [2019-10-22 11:25:53,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:53,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673985261] [2019-10-22 11:25:53,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:53,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:53,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:53,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673985261] [2019-10-22 11:25:53,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:53,673 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:53,673 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157236387] [2019-10-22 11:25:53,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:53,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:53,676 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2019-10-22 11:25:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:53,808 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2019-10-22 11:25:53,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:53,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-10-22 11:25:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:53,841 INFO L225 Difference]: With dead ends: 6140 [2019-10-22 11:25:53,841 INFO L226 Difference]: Without dead ends: 5516 [2019-10-22 11:25:53,842 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 [2019-10-22 11:25:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2019-10-22 11:25:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2019-10-22 11:25:53,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2019-10-22 11:25:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2019-10-22 11:25:54,002 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2019-10-22 11:25:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,003 INFO L462 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2019-10-22 11:25:54,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2019-10-22 11:25:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:25:54,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,009 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] [2019-10-22 11:25:54,009 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2064722079, now seen corresponding path program 1 times [2019-10-22 11:25:54,010 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723183379] [2019-10-22 11:25:54,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:54,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723183379] [2019-10-22 11:25:54,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:25:54,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097512400] [2019-10-22 11:25:54,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:54,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:54,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:54,100 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2019-10-22 11:25:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,234 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2019-10-22 11:25:54,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:25:54,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-22 11:25:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,277 INFO L225 Difference]: With dead ends: 5452 [2019-10-22 11:25:54,277 INFO L226 Difference]: Without dead ends: 4844 [2019-10-22 11:25:54,277 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 [2019-10-22 11:25:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2019-10-22 11:25:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2019-10-22 11:25:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2019-10-22 11:25:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2019-10-22 11:25:54,448 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2019-10-22 11:25:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,449 INFO L462 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2019-10-22 11:25:54,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2019-10-22 11:25:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:25:54,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,456 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] [2019-10-22 11:25:54,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -971785873, now seen corresponding path program 1 times [2019-10-22 11:25:54,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137648026] [2019-10-22 11:25:54,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:54,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137648026] [2019-10-22 11:25:54,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:25:54,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545176260] [2019-10-22 11:25:54,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:25:54,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:54,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:25:54,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:25:54,691 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2019-10-22 11:25:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,816 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2019-10-22 11:25:54,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:25:54,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-10-22 11:25:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,831 INFO L225 Difference]: With dead ends: 3564 [2019-10-22 11:25:54,831 INFO L226 Difference]: Without dead ends: 3052 [2019-10-22 11:25:54,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:25:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2019-10-22 11:25:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2019-10-22 11:25:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2019-10-22 11:25:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2019-10-22 11:25:54,907 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2019-10-22 11:25:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,907 INFO L462 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2019-10-22 11:25:54,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:25:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2019-10-22 11:25:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:25:54,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,913 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] [2019-10-22 11:25:54,913 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash 168191397, now seen corresponding path program 1 times [2019-10-22 11:25:54,914 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750604730] [2019-10-22 11:25:54,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:55,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750604730] [2019-10-22 11:25:55,081 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:55,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:55,081 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127527121] [2019-10-22 11:25:55,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:55,083 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:55,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:55,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:55,090 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 8 states. [2019-10-22 11:25:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:55,298 INFO L93 Difference]: Finished difference Result 6732 states and 24955 transitions. [2019-10-22 11:25:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:25:55,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:25:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:55,309 INFO L225 Difference]: With dead ends: 6732 [2019-10-22 11:25:55,309 INFO L226 Difference]: Without dead ends: 2776 [2019-10-22 11:25:55,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:25:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-10-22 11:25:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2019-10-22 11:25:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2776 states. [2019-10-22 11:25:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 10259 transitions. [2019-10-22 11:25:55,382 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 10259 transitions. Word has length 38 [2019-10-22 11:25:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:55,383 INFO L462 AbstractCegarLoop]: Abstraction has 2776 states and 10259 transitions. [2019-10-22 11:25:55,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 10259 transitions. [2019-10-22 11:25:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:25:55,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:55,388 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] [2019-10-22 11:25:55,388 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1447932215, now seen corresponding path program 2 times [2019-10-22 11:25:55,389 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:55,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418271138] [2019-10-22 11:25:55,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:55,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:55,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:55,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418271138] [2019-10-22 11:25:55,510 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:55,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:25:55,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101924144] [2019-10-22 11:25:55,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:25:55,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:55,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:25:55,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:25:55,511 INFO L87 Difference]: Start difference. First operand 2776 states and 10259 transitions. Second operand 7 states. [2019-10-22 11:25:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:55,657 INFO L93 Difference]: Finished difference Result 4712 states and 17451 transitions. [2019-10-22 11:25:55,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:25:55,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 11:25:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:55,667 INFO L225 Difference]: With dead ends: 4712 [2019-10-22 11:25:55,667 INFO L226 Difference]: Without dead ends: 3032 [2019-10-22 11:25:55,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:25:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2019-10-22 11:25:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2696. [2019-10-22 11:25:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2019-10-22 11:25:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 9971 transitions. [2019-10-22 11:25:55,735 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 9971 transitions. Word has length 38 [2019-10-22 11:25:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:55,735 INFO L462 AbstractCegarLoop]: Abstraction has 2696 states and 9971 transitions. [2019-10-22 11:25:55,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:25:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 9971 transitions. [2019-10-22 11:25:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:25:55,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:55,739 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] [2019-10-22 11:25:55,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1047359705, now seen corresponding path program 3 times [2019-10-22 11:25:55,739 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:55,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716064978] [2019-10-22 11:25:55,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:55,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:55,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:55,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716064978] [2019-10-22 11:25:55,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:55,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:55,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725567548] [2019-10-22 11:25:55,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:55,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:55,866 INFO L87 Difference]: Start difference. First operand 2696 states and 9971 transitions. Second operand 8 states. [2019-10-22 11:25:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:56,048 INFO L93 Difference]: Finished difference Result 5912 states and 22203 transitions. [2019-10-22 11:25:56,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 11:25:56,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:25:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:56,059 INFO L225 Difference]: With dead ends: 5912 [2019-10-22 11:25:56,059 INFO L226 Difference]: Without dead ends: 2176 [2019-10-22 11:25:56,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:25:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-22 11:25:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2019-10-22 11:25:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2019-10-22 11:25:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 8251 transitions. [2019-10-22 11:25:56,111 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 8251 transitions. Word has length 38 [2019-10-22 11:25:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:56,112 INFO L462 AbstractCegarLoop]: Abstraction has 2176 states and 8251 transitions. [2019-10-22 11:25:56,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 8251 transitions. [2019-10-22 11:25:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:25:56,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:56,114 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] [2019-10-22 11:25:56,114 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash 150374941, now seen corresponding path program 4 times [2019-10-22 11:25:56,115 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:56,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209110270] [2019-10-22 11:25:56,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:56,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:56,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209110270] [2019-10-22 11:25:56,248 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:56,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:56,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452673907] [2019-10-22 11:25:56,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:56,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:56,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:56,250 INFO L87 Difference]: Start difference. First operand 2176 states and 8251 transitions. Second operand 8 states. [2019-10-22 11:25:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:56,346 INFO L93 Difference]: Finished difference Result 1664 states and 6203 transitions. [2019-10-22 11:25:56,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:25:56,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:25:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:56,346 INFO L225 Difference]: With dead ends: 1664 [2019-10-22 11:25:56,346 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:56,347 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 [2019-10-22 11:25:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:56,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-22 11:25:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:56,348 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:56,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:56,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:56,351 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:25:56,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:56 BasicIcfg [2019-10-22 11:25:56,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:56,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:56,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:56,353 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:56,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51" (3/4) ... [2019-10-22 11:25:56,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:56,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 11:25:56,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 11:25:56,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 11:25:56,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 11:25:56,367 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 11:25:56,368 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:25:56,417 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a4710be1-5efe-423c-b099-4df5db123a5c/bin/utaipan/witness.graphml [2019-10-22 11:25:56,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:56,419 INFO L168 Benchmark]: Toolchain (without parser) took 6409.10 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 347.6 MB). Free memory was 939.1 MB in the beginning and 847.2 MB in the end (delta: 92.0 MB). Peak memory consumption was 439.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,420 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:56,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.04 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. [2019-10-22 11:25:56,421 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,421 INFO L168 Benchmark]: RCFGBuilder took 332.82 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,422 INFO L168 Benchmark]: TraceAbstraction took 5257.14 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.1 GB in the beginning and 860.3 MB in the end (delta: 219.2 MB). Peak memory consumption was 417.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,422 INFO L168 Benchmark]: Witness Printer took 64.91 ms. Allocated memory is still 1.4 GB. Free memory was 860.3 MB in the beginning and 847.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:56,425 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 679.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.04 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 32.69 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 332.82 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5257.14 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.1 GB in the beginning and 860.3 MB in the end (delta: 219.2 MB). Peak memory consumption was 417.4 MB. Max. memory is 11.5 GB. * Witness Printer took 64.91 ms. Allocated memory is still 1.4 GB. Free memory was 860.3 MB in the beginning and 847.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 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, 87 locations, 1 error locations. Result: SAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1143 SDslu, 1680 SDs, 0 SdLazy, 199 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13135occurred 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, 8 MinimizatonAttempts, 336 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 32932 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...