./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/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 202bc01bb48234a1d40d76b97c20197b03b7a3c3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:36:25,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:25,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:25,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:25,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:25,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:25,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:25,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:25,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:25,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:25,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:25,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:25,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:25,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:25,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:25,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:25,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:25,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:25,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:25,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:25,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:25,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:25,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:25,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:25,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:25,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:25,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:25,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:25,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:25,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:25,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:25,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:25,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:25,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:26,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:26,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:26,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:26,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:26,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:26,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:26,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:26,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:36:26,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:26,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:26,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:26,017 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:26,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:26,017 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:26,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:36:26,018 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:26,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:26,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:36:26,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:36:26,018 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:26,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:36:26,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:36:26,019 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:36:26,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:26,020 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:36:26,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:36:26,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:36:26,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:26,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:26,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:26,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:26,021 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:36:26,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:26,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:26,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:26,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:26,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:26,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:26,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:26,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:26,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:26,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:36:26,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:36:26,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:26,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:26,025 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/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/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 -> 202bc01bb48234a1d40d76b97c20197b03b7a3c3 [2019-11-26 02:36:26,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:26,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:26,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:26,198 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:26,198 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:26,199 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2019-11-26 02:36:26,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/data/5af155bc9/d0d2adda5b1d4dc991ae41d9ee852973/FLAGe9f19c656 [2019-11-26 02:36:26,750 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:26,750 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2019-11-26 02:36:26,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/data/5af155bc9/d0d2adda5b1d4dc991ae41d9ee852973/FLAGe9f19c656 [2019-11-26 02:36:27,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/data/5af155bc9/d0d2adda5b1d4dc991ae41d9ee852973 [2019-11-26 02:36:27,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:27,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:27,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:27,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:27,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:27,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e44fd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27, skipping insertion in model container [2019-11-26 02:36:27,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:27,331 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:27,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:27,706 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:27,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:27,816 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:27,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27 WrapperNode [2019-11-26 02:36:27,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:27,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:27,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:27,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:27,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:27,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:27,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:27,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:27,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... [2019-11-26 02:36:27,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:27,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:27,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:27,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:27,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/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 [2019-11-26 02:36:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:36:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:36:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:36:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:36:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:36:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:36:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:36:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:36:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:36:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:36:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-26 02:36:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-26 02:36:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:36:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:27,955 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:36:28,392 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:28,392 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:36:28,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:28 BoogieIcfgContainer [2019-11-26 02:36:28,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:28,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:28,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:28,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:27" (1/3) ... [2019-11-26 02:36:28,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b350258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:28, skipping insertion in model container [2019-11-26 02:36:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:27" (2/3) ... [2019-11-26 02:36:28,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b350258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:28, skipping insertion in model container [2019-11-26 02:36:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:28" (3/3) ... [2019-11-26 02:36:28,400 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2019-11-26 02:36:28,456 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,456 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,456 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,457 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,457 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,457 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,458 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,459 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,459 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,459 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,459 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,460 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,461 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,461 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,461 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,461 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,464 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,465 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,465 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,465 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,465 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,465 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,466 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,466 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,466 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,466 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,467 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,467 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,467 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,468 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,468 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,469 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,469 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,469 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,469 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,470 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,471 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,471 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,471 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,472 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,472 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,472 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,474 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,475 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,476 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:36:28,505 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:36:28,505 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:28,511 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:36:28,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:36:28,539 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:28,540 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:28,540 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:28,540 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:28,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:28,540 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:28,540 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:28,541 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:28,552 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 95 transitions [2019-11-26 02:36:29,133 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5475 states. [2019-11-26 02:36:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states. [2019-11-26 02:36:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 02:36:29,167 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:29,168 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:29,168 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash 531103723, now seen corresponding path program 1 times [2019-11-26 02:36:29,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:29,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924622041] [2019-11-26 02:36:29,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:29,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924622041] [2019-11-26 02:36:29,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:29,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:36:29,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594778919] [2019-11-26 02:36:29,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:36:29,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:29,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:36:29,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:36:29,606 INFO L87 Difference]: Start difference. First operand 5475 states. Second operand 4 states. [2019-11-26 02:36:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:29,761 INFO L93 Difference]: Finished difference Result 5712 states and 21937 transitions. [2019-11-26 02:36:29,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:36:29,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-11-26 02:36:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:29,819 INFO L225 Difference]: With dead ends: 5712 [2019-11-26 02:36:29,820 INFO L226 Difference]: Without dead ends: 2396 [2019-11-26 02:36:29,821 INFO L630 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 [2019-11-26 02:36:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2019-11-26 02:36:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2396. [2019-11-26 02:36:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2019-11-26 02:36:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 8940 transitions. [2019-11-26 02:36:30,009 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 8940 transitions. Word has length 38 [2019-11-26 02:36:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:30,011 INFO L462 AbstractCegarLoop]: Abstraction has 2396 states and 8940 transitions. [2019-11-26 02:36:30,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:36:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 8940 transitions. [2019-11-26 02:36:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:36:30,017 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:30,017 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:30,018 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash 246307377, now seen corresponding path program 1 times [2019-11-26 02:36:30,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:30,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610999538] [2019-11-26 02:36:30,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:30,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610999538] [2019-11-26 02:36:30,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:30,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:36:30,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695410152] [2019-11-26 02:36:30,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:36:30,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:30,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:36:30,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:36:30,252 INFO L87 Difference]: Start difference. First operand 2396 states and 8940 transitions. Second operand 5 states. [2019-11-26 02:36:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:30,356 INFO L93 Difference]: Finished difference Result 2567 states and 9324 transitions. [2019-11-26 02:36:30,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:30,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-11-26 02:36:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:30,378 INFO L225 Difference]: With dead ends: 2567 [2019-11-26 02:36:30,379 INFO L226 Difference]: Without dead ends: 2312 [2019-11-26 02:36:30,379 INFO L630 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 [2019-11-26 02:36:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2019-11-26 02:36:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2312. [2019-11-26 02:36:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2019-11-26 02:36:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 8548 transitions. [2019-11-26 02:36:30,477 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 8548 transitions. Word has length 39 [2019-11-26 02:36:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:30,478 INFO L462 AbstractCegarLoop]: Abstraction has 2312 states and 8548 transitions. [2019-11-26 02:36:30,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:36:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 8548 transitions. [2019-11-26 02:36:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:36:30,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:30,486 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:30,486 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2135304403, now seen corresponding path program 1 times [2019-11-26 02:36:30,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:30,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746784087] [2019-11-26 02:36:30,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:30,712 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2019-11-26 02:36:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:30,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746784087] [2019-11-26 02:36:30,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:30,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:36:30,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618869362] [2019-11-26 02:36:30,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:36:30,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:30,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:36:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:36:30,718 INFO L87 Difference]: Start difference. First operand 2312 states and 8548 transitions. Second operand 6 states. [2019-11-26 02:36:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:30,876 INFO L93 Difference]: Finished difference Result 2177 states and 7684 transitions. [2019-11-26 02:36:30,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:36:30,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-11-26 02:36:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:30,894 INFO L225 Difference]: With dead ends: 2177 [2019-11-26 02:36:30,894 INFO L226 Difference]: Without dead ends: 1934 [2019-11-26 02:36:30,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:36:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2019-11-26 02:36:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1934. [2019-11-26 02:36:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2019-11-26 02:36:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 6910 transitions. [2019-11-26 02:36:30,968 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 6910 transitions. Word has length 40 [2019-11-26 02:36:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:30,969 INFO L462 AbstractCegarLoop]: Abstraction has 1934 states and 6910 transitions. [2019-11-26 02:36:30,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:36:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 6910 transitions. [2019-11-26 02:36:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-26 02:36:30,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:30,976 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:30,976 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1682641852, now seen corresponding path program 1 times [2019-11-26 02:36:30,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:30,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437098914] [2019-11-26 02:36:30,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:31,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437098914] [2019-11-26 02:36:31,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:31,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:36:31,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313877693] [2019-11-26 02:36:31,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:36:31,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:31,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:36:31,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:36:31,126 INFO L87 Difference]: Start difference. First operand 1934 states and 6910 transitions. Second operand 7 states. [2019-11-26 02:36:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:31,255 INFO L93 Difference]: Finished difference Result 1367 states and 4534 transitions. [2019-11-26 02:36:31,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:36:31,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-26 02:36:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:31,266 INFO L225 Difference]: With dead ends: 1367 [2019-11-26 02:36:31,266 INFO L226 Difference]: Without dead ends: 1178 [2019-11-26 02:36:31,267 INFO L630 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 [2019-11-26 02:36:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-11-26 02:36:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2019-11-26 02:36:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-11-26 02:36:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 3886 transitions. [2019-11-26 02:36:31,304 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 3886 transitions. Word has length 41 [2019-11-26 02:36:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:31,306 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 3886 transitions. [2019-11-26 02:36:31,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:36:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 3886 transitions. [2019-11-26 02:36:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:36:31,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:31,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:31,310 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1085706427, now seen corresponding path program 1 times [2019-11-26 02:36:31,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:31,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339835480] [2019-11-26 02:36:31,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:31,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339835480] [2019-11-26 02:36:31,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:31,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:36:31,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594619698] [2019-11-26 02:36:31,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:36:31,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:31,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:36:31,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:36:31,477 INFO L87 Difference]: Start difference. First operand 1178 states and 3886 transitions. Second operand 8 states. [2019-11-26 02:36:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:31,609 INFO L93 Difference]: Finished difference Result 1871 states and 6223 transitions. [2019-11-26 02:36:31,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:36:31,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-26 02:36:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:31,619 INFO L225 Difference]: With dead ends: 1871 [2019-11-26 02:36:31,619 INFO L226 Difference]: Without dead ends: 1082 [2019-11-26 02:36:31,619 INFO L630 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 [2019-11-26 02:36:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2019-11-26 02:36:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2019-11-26 02:36:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2019-11-26 02:36:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 3538 transitions. [2019-11-26 02:36:31,651 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 3538 transitions. Word has length 42 [2019-11-26 02:36:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:31,651 INFO L462 AbstractCegarLoop]: Abstraction has 1082 states and 3538 transitions. [2019-11-26 02:36:31,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:36:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 3538 transitions. [2019-11-26 02:36:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:36:31,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:31,655 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:31,655 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash 590924317, now seen corresponding path program 2 times [2019-11-26 02:36:31,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:31,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088271818] [2019-11-26 02:36:31,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:31,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088271818] [2019-11-26 02:36:31,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:31,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:36:31,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688907418] [2019-11-26 02:36:31,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:36:31,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:31,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:36:31,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:36:31,773 INFO L87 Difference]: Start difference. First operand 1082 states and 3538 transitions. Second operand 8 states. [2019-11-26 02:36:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:31,884 INFO L93 Difference]: Finished difference Result 1604 states and 5341 transitions. [2019-11-26 02:36:31,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:36:31,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-26 02:36:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:31,893 INFO L225 Difference]: With dead ends: 1604 [2019-11-26 02:36:31,893 INFO L226 Difference]: Without dead ends: 827 [2019-11-26 02:36:31,894 INFO L630 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 [2019-11-26 02:36:31,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-11-26 02:36:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2019-11-26 02:36:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-11-26 02:36:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2722 transitions. [2019-11-26 02:36:31,920 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2722 transitions. Word has length 42 [2019-11-26 02:36:31,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:31,920 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 2722 transitions. [2019-11-26 02:36:31,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:36:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2722 transitions. [2019-11-26 02:36:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:36:31,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:31,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:31,923 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash 235616253, now seen corresponding path program 3 times [2019-11-26 02:36:31,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:31,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785778817] [2019-11-26 02:36:31,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:32,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785778817] [2019-11-26 02:36:32,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:32,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:36:32,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314416592] [2019-11-26 02:36:32,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:36:32,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:32,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:36:32,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:36:32,054 INFO L87 Difference]: Start difference. First operand 827 states and 2722 transitions. Second operand 7 states. [2019-11-26 02:36:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:32,149 INFO L93 Difference]: Finished difference Result 1340 states and 4504 transitions. [2019-11-26 02:36:32,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:36:32,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2019-11-26 02:36:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:32,156 INFO L225 Difference]: With dead ends: 1340 [2019-11-26 02:36:32,157 INFO L226 Difference]: Without dead ends: 779 [2019-11-26 02:36:32,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2019-11-26 02:36:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2019-11-26 02:36:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-11-26 02:36:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2578 transitions. [2019-11-26 02:36:32,184 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2578 transitions. Word has length 42 [2019-11-26 02:36:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:32,185 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 2578 transitions. [2019-11-26 02:36:32,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:36:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2578 transitions. [2019-11-26 02:36:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:36:32,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:32,187 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:32,187 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash -501530371, now seen corresponding path program 4 times [2019-11-26 02:36:32,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:32,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096573784] [2019-11-26 02:36:32,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:32,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096573784] [2019-11-26 02:36:32,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:32,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:36:32,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457399073] [2019-11-26 02:36:32,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:36:32,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:36:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:36:32,315 INFO L87 Difference]: Start difference. First operand 779 states and 2578 transitions. Second operand 7 states. [2019-11-26 02:36:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:32,423 INFO L93 Difference]: Finished difference Result 617 states and 1984 transitions. [2019-11-26 02:36:32,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:36:32,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2019-11-26 02:36:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:32,423 INFO L225 Difference]: With dead ends: 617 [2019-11-26 02:36:32,424 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:36:32,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:36:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:36:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:36:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:36:32,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-11-26 02:36:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:32,425 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:36:32,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:36:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:36:32,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:36:32,429 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:36:32,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:36:32 BasicIcfg [2019-11-26 02:36:32,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:36:32,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:36:32,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:36:32,434 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:36:32,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:28" (3/4) ... [2019-11-26 02:36:32,439 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:36:32,459 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:36:32,466 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:36:32,466 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:36:32,466 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-26 02:36:32,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:36:32,472 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:36:32,473 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:36:32,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fe010d9-f45a-46c8-b7d1-4e97f38d7cb3/bin/utaipan/witness.graphml [2019-11-26 02:36:32,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:36:32,529 INFO L168 Benchmark]: Toolchain (without parser) took 5256.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.2 MB). Free memory was 939.4 MB in the beginning and 901.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 343.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,529 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:32,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -207.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.84 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. [2019-11-26 02:36:32,530 INFO L168 Benchmark]: Boogie Preprocessor took 24.91 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,531 INFO L168 Benchmark]: RCFGBuilder took 507.49 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,531 INFO L168 Benchmark]: TraceAbstraction took 4037.36 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.3 MB). Free memory was 1.1 GB in the beginning and 904.4 MB in the end (delta: 209.0 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,532 INFO L168 Benchmark]: Witness Printer took 89.85 ms. Allocated memory is still 1.3 GB. Free memory was 904.4 MB in the beginning and 901.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:32,534 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 546.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -207.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.84 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 24.91 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 507.49 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4037.36 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.3 MB). Free memory was 1.1 GB in the beginning and 904.4 MB in the end (delta: 209.0 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. * Witness Printer took 89.85 ms. Allocated memory is still 1.3 GB. Free memory was 904.4 MB in the beginning and 901.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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 17 procedures, 115 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 470 SDtfs, 836 SDslu, 1295 SDs, 0 SdLazy, 177 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5475occurred 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: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 318 ConstructedInterpolants, 0 QuantifiedInterpolants, 39038 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...