./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_tso.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_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/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 8e1f858a9fc193a77b37a819841c2627b369b859 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:00:14,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:00:14,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:00:14,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:00:14,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:00:14,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:00:14,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:00:14,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:00:14,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:00:14,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:00:14,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:00:14,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:00:14,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:00:14,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:00:14,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:00:14,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:00:14,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:00:14,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:00:14,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:00:14,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:00:14,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:00:14,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:00:14,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:00:14,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:00:14,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:00:14,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:00:14,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:00:14,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:00:14,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:00:14,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:00:14,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:00:14,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:00:14,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:00:14,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:00:14,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:00:14,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:00:14,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:00:14,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:00:14,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:00:14,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:00:14,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:00:14,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 03:00:14,543 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:00:14,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:00:14,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:00:14,555 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:00:14,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:00:14,555 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:00:14,555 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 03:00:14,555 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:00:14,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:00:14,556 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 03:00:14,556 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 03:00:14,556 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:00:14,556 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 03:00:14,557 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 03:00:14,557 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 03:00:14,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:00:14,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:00:14,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:00:14,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:00:14,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:00:14,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:00:14,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:00:14,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:00:14,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:00:14,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:00:14,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:00:14,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:00:14,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:00:14,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:00:14,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:00:14,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:00:14,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:00:14,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:00:14,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 03:00:14,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:00:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:00:14,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:00:14,565 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_b67a3d4f-c94a-4a43-b647-ee55004a6c86/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 -> 8e1f858a9fc193a77b37a819841c2627b369b859 [2019-11-26 03:00:14,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:00:14,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:00:14,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:00:14,729 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:00:14,729 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:00:14,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2019-11-26 03:00:14,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/data/d7187a074/d834d9a8f5bd45049be8ecc12d498277/FLAGb4a3f89fa [2019-11-26 03:00:15,215 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:00:15,216 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2019-11-26 03:00:15,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/data/d7187a074/d834d9a8f5bd45049be8ecc12d498277/FLAGb4a3f89fa [2019-11-26 03:00:15,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/data/d7187a074/d834d9a8f5bd45049be8ecc12d498277 [2019-11-26 03:00:15,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:00:15,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:00:15,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:15,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:00:15,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:00:15,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1873f192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15, skipping insertion in model container [2019-11-26 03:00:15,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:00:15,296 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:00:15,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:15,754 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:00:15,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:15,887 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:00:15,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15 WrapperNode [2019-11-26 03:00:15,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:15,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:15,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:00:15,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:00:15,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:15,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:00:15,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:00:15,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:00:15,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... [2019-11-26 03:00:15,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:00:15,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:00:15,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:00:15,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:00:15,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/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 03:00:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 03:00:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 03:00:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 03:00:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 03:00:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 03:00:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 03:00:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 03:00:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 03:00:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 03:00:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 03:00:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-26 03:00:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-26 03:00:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 03:00:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:00:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:00:16,023 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 03:00:16,370 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:00:16,370 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 03:00:16,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:16 BoogieIcfgContainer [2019-11-26 03:00:16,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:00:16,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:00:16,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:00:16,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:00:16,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:00:15" (1/3) ... [2019-11-26 03:00:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7646d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:16, skipping insertion in model container [2019-11-26 03:00:16,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:15" (2/3) ... [2019-11-26 03:00:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7646d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:16, skipping insertion in model container [2019-11-26 03:00:16,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:16" (3/3) ... [2019-11-26 03:00:16,378 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2019-11-26 03:00:16,442 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,442 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,442 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,443 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,444 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,444 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,444 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,444 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,445 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,445 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,445 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,445 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,446 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,448 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,448 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,449 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,450 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,450 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,450 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,450 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,450 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,451 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,451 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,452 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,452 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,455 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,455 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,455 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,456 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,456 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,456 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,457 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,457 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,457 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,457 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,458 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,458 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,458 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,458 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,458 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,459 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,460 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,460 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,460 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,461 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,461 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,461 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,461 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,461 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,462 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,462 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,462 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,462 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,462 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,463 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,463 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,463 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,463 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,464 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,464 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,464 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,464 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:00:16,499 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 03:00:16,499 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:00:16,506 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 03:00:16,517 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 03:00:16,534 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:00:16,534 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:00:16,535 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:00:16,535 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:00:16,535 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:00:16,535 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:00:16,535 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:00:16,536 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:00:16,553 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 120 places, 92 transitions [2019-11-26 03:00:17,196 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5472 states. [2019-11-26 03:00:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states. [2019-11-26 03:00:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-26 03:00:17,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:17,231 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] [2019-11-26 03:00:17,232 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1734521025, now seen corresponding path program 1 times [2019-11-26 03:00:17,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:17,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100886191] [2019-11-26 03:00:17,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:17,624 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 03:00:17,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100886191] [2019-11-26 03:00:17,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 03:00:17,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146343956] [2019-11-26 03:00:17,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:00:17,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:00:17,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:00:17,656 INFO L87 Difference]: Start difference. First operand 5472 states. Second operand 4 states. [2019-11-26 03:00:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:17,832 INFO L93 Difference]: Finished difference Result 5709 states and 21934 transitions. [2019-11-26 03:00:17,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:00:17,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-11-26 03:00:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:17,874 INFO L225 Difference]: With dead ends: 5709 [2019-11-26 03:00:17,874 INFO L226 Difference]: Without dead ends: 2393 [2019-11-26 03:00:17,875 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 03:00:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2019-11-26 03:00:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2019-11-26 03:00:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-11-26 03:00:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 8937 transitions. [2019-11-26 03:00:18,077 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 8937 transitions. Word has length 35 [2019-11-26 03:00:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:18,078 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 8937 transitions. [2019-11-26 03:00:18,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:00:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 8937 transitions. [2019-11-26 03:00:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-26 03:00:18,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:18,086 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] [2019-11-26 03:00:18,086 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2069628597, now seen corresponding path program 1 times [2019-11-26 03:00:18,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:18,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14138447] [2019-11-26 03:00:18,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:18,273 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 03:00:18,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14138447] [2019-11-26 03:00:18,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:18,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 03:00:18,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470766775] [2019-11-26 03:00:18,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:00:18,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:18,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:00:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:00:18,278 INFO L87 Difference]: Start difference. First operand 2393 states and 8937 transitions. Second operand 5 states. [2019-11-26 03:00:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:18,455 INFO L93 Difference]: Finished difference Result 2564 states and 9321 transitions. [2019-11-26 03:00:18,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:00:18,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-26 03:00:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:18,479 INFO L225 Difference]: With dead ends: 2564 [2019-11-26 03:00:18,480 INFO L226 Difference]: Without dead ends: 2309 [2019-11-26 03:00:18,481 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 03:00:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-11-26 03:00:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-11-26 03:00:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-11-26 03:00:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 8545 transitions. [2019-11-26 03:00:18,582 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 8545 transitions. Word has length 36 [2019-11-26 03:00:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:18,583 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 8545 transitions. [2019-11-26 03:00:18,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:00:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 8545 transitions. [2019-11-26 03:00:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-26 03:00:18,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:18,589 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] [2019-11-26 03:00:18,589 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:18,589 INFO L82 PathProgramCache]: Analyzing trace with hash -88806324, now seen corresponding path program 1 times [2019-11-26 03:00:18,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:18,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654152390] [2019-11-26 03:00:18,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:18,753 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 03:00:18,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654152390] [2019-11-26 03:00:18,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:18,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 03:00:18,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739599462] [2019-11-26 03:00:18,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 03:00:18,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:18,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 03:00:18,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:00:18,755 INFO L87 Difference]: Start difference. First operand 2309 states and 8545 transitions. Second operand 6 states. [2019-11-26 03:00:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:18,872 INFO L93 Difference]: Finished difference Result 2174 states and 7681 transitions. [2019-11-26 03:00:18,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 03:00:18,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-26 03:00:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:18,891 INFO L225 Difference]: With dead ends: 2174 [2019-11-26 03:00:18,892 INFO L226 Difference]: Without dead ends: 1931 [2019-11-26 03:00:18,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 03:00:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2019-11-26 03:00:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1931. [2019-11-26 03:00:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2019-11-26 03:00:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 6907 transitions. [2019-11-26 03:00:18,970 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 6907 transitions. Word has length 37 [2019-11-26 03:00:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:18,971 INFO L462 AbstractCegarLoop]: Abstraction has 1931 states and 6907 transitions. [2019-11-26 03:00:18,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 03:00:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 6907 transitions. [2019-11-26 03:00:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 03:00:18,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:18,980 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 03:00:18,980 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1981057076, now seen corresponding path program 1 times [2019-11-26 03:00:18,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:18,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020412436] [2019-11-26 03:00:18,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:19,107 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 03:00:19,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020412436] [2019-11-26 03:00:19,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:19,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 03:00:19,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245648337] [2019-11-26 03:00:19,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 03:00:19,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:19,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 03:00:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:00:19,109 INFO L87 Difference]: Start difference. First operand 1931 states and 6907 transitions. Second operand 7 states. [2019-11-26 03:00:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:19,230 INFO L93 Difference]: Finished difference Result 1364 states and 4531 transitions. [2019-11-26 03:00:19,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 03:00:19,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-11-26 03:00:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:19,240 INFO L225 Difference]: With dead ends: 1364 [2019-11-26 03:00:19,240 INFO L226 Difference]: Without dead ends: 1175 [2019-11-26 03:00:19,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-26 03:00:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-11-26 03:00:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-11-26 03:00:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-11-26 03:00:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 3883 transitions. [2019-11-26 03:00:19,280 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 3883 transitions. Word has length 38 [2019-11-26 03:00:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:19,281 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 3883 transitions. [2019-11-26 03:00:19,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 03:00:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 3883 transitions. [2019-11-26 03:00:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 03:00:19,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:19,284 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 03:00:19,284 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash -646003633, now seen corresponding path program 1 times [2019-11-26 03:00:19,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:19,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898659338] [2019-11-26 03:00:19,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:19,401 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 03:00:19,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898659338] [2019-11-26 03:00:19,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:19,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 03:00:19,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74612494] [2019-11-26 03:00:19,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 03:00:19,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:19,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 03:00:19,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:00:19,403 INFO L87 Difference]: Start difference. First operand 1175 states and 3883 transitions. Second operand 7 states. [2019-11-26 03:00:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:19,528 INFO L93 Difference]: Finished difference Result 1904 states and 6331 transitions. [2019-11-26 03:00:19,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 03:00:19,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-26 03:00:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:19,538 INFO L225 Difference]: With dead ends: 1904 [2019-11-26 03:00:19,539 INFO L226 Difference]: Without dead ends: 1055 [2019-11-26 03:00:19,539 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 03:00:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2019-11-26 03:00:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2019-11-26 03:00:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2019-11-26 03:00:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 3502 transitions. [2019-11-26 03:00:19,588 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 3502 transitions. Word has length 39 [2019-11-26 03:00:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:19,588 INFO L462 AbstractCegarLoop]: Abstraction has 1055 states and 3502 transitions. [2019-11-26 03:00:19,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 03:00:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 3502 transitions. [2019-11-26 03:00:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 03:00:19,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:19,592 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 03:00:19,592 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:19,592 INFO L82 PathProgramCache]: Analyzing trace with hash -571248129, now seen corresponding path program 2 times [2019-11-26 03:00:19,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:19,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034280988] [2019-11-26 03:00:19,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:19,767 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 03:00:19,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034280988] [2019-11-26 03:00:19,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:19,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 03:00:19,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676468993] [2019-11-26 03:00:19,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 03:00:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 03:00:19,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 03:00:19,769 INFO L87 Difference]: Start difference. First operand 1055 states and 3502 transitions. Second operand 8 states. [2019-11-26 03:00:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:20,050 INFO L93 Difference]: Finished difference Result 2252 states and 7582 transitions. [2019-11-26 03:00:20,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 03:00:20,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-11-26 03:00:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:20,059 INFO L225 Difference]: With dead ends: 2252 [2019-11-26 03:00:20,059 INFO L226 Difference]: Without dead ends: 920 [2019-11-26 03:00:20,060 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-11-26 03:00:20,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2019-11-26 03:00:20,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 911. [2019-11-26 03:00:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2019-11-26 03:00:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 3031 transitions. [2019-11-26 03:00:20,091 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 3031 transitions. Word has length 39 [2019-11-26 03:00:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:20,092 INFO L462 AbstractCegarLoop]: Abstraction has 911 states and 3031 transitions. [2019-11-26 03:00:20,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 03:00:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 3031 transitions. [2019-11-26 03:00:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 03:00:20,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:20,096 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 03:00:20,096 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1972568161, now seen corresponding path program 3 times [2019-11-26 03:00:20,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:20,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973164844] [2019-11-26 03:00:20,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:20,260 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 03:00:20,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973164844] [2019-11-26 03:00:20,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:20,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 03:00:20,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162924644] [2019-11-26 03:00:20,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 03:00:20,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:20,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 03:00:20,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 03:00:20,262 INFO L87 Difference]: Start difference. First operand 911 states and 3031 transitions. Second operand 8 states. [2019-11-26 03:00:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:20,363 INFO L93 Difference]: Finished difference Result 749 states and 2437 transitions. [2019-11-26 03:00:20,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 03:00:20,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-11-26 03:00:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:20,364 INFO L225 Difference]: With dead ends: 749 [2019-11-26 03:00:20,364 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 03:00:20,365 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 03:00:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 03:00:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 03:00:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 03:00:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 03:00:20,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-26 03:00:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:20,366 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 03:00:20,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 03:00:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 03:00:20,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 03:00:20,369 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 03:00:20,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 03:00:20 BasicIcfg [2019-11-26 03:00:20,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 03:00:20,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:00:20,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:00:20,376 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:00:20,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:16" (3/4) ... [2019-11-26 03:00:20,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 03:00:20,402 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 03:00:20,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 03:00:20,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 03:00:20,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-26 03:00:20,414 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 03:00:20,414 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 03:00:20,414 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 03:00:20,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b67a3d4f-c94a-4a43-b647-ee55004a6c86/bin/utaipan/witness.graphml [2019-11-26 03:00:20,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:00:20,468 INFO L168 Benchmark]: Toolchain (without parser) took 5226.73 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 265.8 MB). Free memory was 940.6 MB in the beginning and 900.8 MB in the end (delta: 39.8 MB). Peak memory consumption was 305.6 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,469 INFO L168 Benchmark]: CDTParser took 0.30 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 03:00:20,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.71 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 03:00:20,474 INFO L168 Benchmark]: Boogie Preprocessor took 28.50 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,475 INFO L168 Benchmark]: RCFGBuilder took 415.17 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,475 INFO L168 Benchmark]: TraceAbstraction took 4003.15 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 911.5 MB in the end (delta: 182.1 MB). Peak memory consumption was 288.0 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,475 INFO L168 Benchmark]: Witness Printer took 90.50 ms. Allocated memory is still 1.3 GB. Free memory was 911.5 MB in the beginning and 900.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:20,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 646.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.71 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 28.50 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 415.17 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4003.15 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 911.5 MB in the end (delta: 182.1 MB). Peak memory consumption was 288.0 MB. Max. memory is 11.5 GB. * Witness Printer took 90.50 ms. Allocated memory is still 1.3 GB. Free memory was 911.5 MB in the beginning and 900.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 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, 112 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 704 SDslu, 1190 SDs, 0 SdLazy, 170 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5472occurred 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, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 28670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...