./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.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_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/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 a75fae05219b8dc129ce0de9eab72445d562eb07 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:18:55,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:18:55,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:18:55,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:18:55,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:18:55,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:18:55,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:18:55,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:18:55,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:18:55,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:18:55,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:18:55,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:18:55,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:18:55,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:18:55,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:18:55,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:18:55,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:18:55,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:18:55,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:18:55,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:18:55,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:18:55,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:18:55,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:18:55,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:18:55,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:18:55,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:18:55,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:18:55,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:18:55,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:18:55,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:18:55,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:18:55,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:18:55,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:18:55,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:18:55,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:18:55,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:18:55,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:18:55,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:18:55,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:18:55,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:18:55,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:18:55,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:18:55,962 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:18:55,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:18:55,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:18:55,974 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:18:55,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:18:55,975 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:18:55,975 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:18:55,975 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:18:55,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:18:55,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:18:55,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:18:55,976 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:18:55,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:18:55,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:18:55,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:18:55,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:18:55,977 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:18:55,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:18:55,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:18:55,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:18:55,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:18:55,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:18:55,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:18:55,980 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:18:55,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:18:55,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:18:55,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:18:55,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:18:55,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:18:55,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:55,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:18:55,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:18:55,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:18:55,982 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:18:55,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:18:55,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:18:55,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:18:55,983 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_83a358c8-cb18-43fd-a3bd-b4896c3d636f/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 -> a75fae05219b8dc129ce0de9eab72445d562eb07 [2019-11-26 02:18:56,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:18:56,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:18:56,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:18:56,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:18:56,152 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:18:56,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-26 02:18:56,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/data/a2767c12c/4677a95eb79648aa8122dff766b19626/FLAG1b67d311e [2019-11-26 02:18:56,646 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:18:56,649 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-26 02:18:56,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/data/a2767c12c/4677a95eb79648aa8122dff766b19626/FLAG1b67d311e [2019-11-26 02:18:56,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/data/a2767c12c/4677a95eb79648aa8122dff766b19626 [2019-11-26 02:18:56,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:18:56,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:18:56,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:56,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:18:56,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:18:56,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:56" (1/1) ... [2019-11-26 02:18:56,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2a2655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:56, skipping insertion in model container [2019-11-26 02:18:56,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:56" (1/1) ... [2019-11-26 02:18:56,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:18:57,028 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:18:57,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:57,485 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:18:57,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:57,635 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:18:57,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57 WrapperNode [2019-11-26 02:18:57,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:57,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:57,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:18:57,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:18:57,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:57,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:18:57,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:18:57,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:18:57,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... [2019-11-26 02:18:57,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:18:57,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:18:57,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:18:57,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:18:57,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/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 02:18:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:18:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:18:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:18:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:18:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:18:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:18:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:18:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:18:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:18:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:18:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-26 02:18:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-26 02:18:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:18:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:18:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:18:57,798 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 02:18:58,187 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:18:58,187 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:18:58,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:58 BoogieIcfgContainer [2019-11-26 02:18:58,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:18:58,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:18:58,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:18:58,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:18:58,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:18:56" (1/3) ... [2019-11-26 02:18:58,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281eebf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:58, skipping insertion in model container [2019-11-26 02:18:58,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:57" (2/3) ... [2019-11-26 02:18:58,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281eebf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:58, skipping insertion in model container [2019-11-26 02:18:58,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:58" (3/3) ... [2019-11-26 02:18:58,195 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2019-11-26 02:18:58,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,245 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,245 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,246 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,247 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,247 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,247 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,247 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,247 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,248 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,248 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,249 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,249 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,249 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,249 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,249 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,250 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,251 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,252 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,252 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,252 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,253 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,253 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,256 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,257 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,257 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,257 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,257 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,257 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,258 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,259 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:58,300 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:18:58,300 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:18:58,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:18:58,314 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:18:58,332 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:18:58,333 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:18:58,333 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:18:58,333 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:18:58,334 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:18:58,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:18:58,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:18:58,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:18:58,348 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 121 places, 93 transitions [2019-11-26 02:18:58,892 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5473 states. [2019-11-26 02:18:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states. [2019-11-26 02:18:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-26 02:18:58,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:58,932 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 02:18:58,933 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1039628048, now seen corresponding path program 1 times [2019-11-26 02:18:58,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:58,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440690899] [2019-11-26 02:18:58,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:59,318 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 02:18:59,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440690899] [2019-11-26 02:18:59,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:59,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:18:59,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066996916] [2019-11-26 02:18:59,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:18:59,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:59,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:18:59,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:18:59,344 INFO L87 Difference]: Start difference. First operand 5473 states. Second operand 4 states. [2019-11-26 02:18:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:59,517 INFO L93 Difference]: Finished difference Result 5710 states and 21935 transitions. [2019-11-26 02:18:59,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:18:59,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-26 02:18:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:59,577 INFO L225 Difference]: With dead ends: 5710 [2019-11-26 02:18:59,577 INFO L226 Difference]: Without dead ends: 2394 [2019-11-26 02:18:59,579 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 02:18:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2019-11-26 02:18:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2394. [2019-11-26 02:18:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2394 states. [2019-11-26 02:18:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 8938 transitions. [2019-11-26 02:18:59,794 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 8938 transitions. Word has length 36 [2019-11-26 02:18:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:59,796 INFO L462 AbstractCegarLoop]: Abstraction has 2394 states and 8938 transitions. [2019-11-26 02:18:59,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:18:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 8938 transitions. [2019-11-26 02:18:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-26 02:18:59,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:59,804 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 02:18:59,804 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 870944544, now seen corresponding path program 1 times [2019-11-26 02:18:59,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:59,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790892099] [2019-11-26 02:18:59,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:59,961 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 02:18:59,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790892099] [2019-11-26 02:18:59,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:59,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:18:59,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394309379] [2019-11-26 02:18:59,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:18:59,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:59,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:18:59,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:18:59,966 INFO L87 Difference]: Start difference. First operand 2394 states and 8938 transitions. Second operand 5 states. [2019-11-26 02:19:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:00,085 INFO L93 Difference]: Finished difference Result 2565 states and 9322 transitions. [2019-11-26 02:19:00,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:19:00,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-26 02:19:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:00,110 INFO L225 Difference]: With dead ends: 2565 [2019-11-26 02:19:00,173 INFO L226 Difference]: Without dead ends: 2310 [2019-11-26 02:19:00,174 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 02:19:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2019-11-26 02:19:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2019-11-26 02:19:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2019-11-26 02:19:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 8546 transitions. [2019-11-26 02:19:00,270 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 8546 transitions. Word has length 37 [2019-11-26 02:19:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:00,271 INFO L462 AbstractCegarLoop]: Abstraction has 2310 states and 8546 transitions. [2019-11-26 02:19:00,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:19:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 8546 transitions. [2019-11-26 02:19:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 02:19:00,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:00,278 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 02:19:00,278 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1824304209, now seen corresponding path program 1 times [2019-11-26 02:19:00,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:00,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629034500] [2019-11-26 02:19:00,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:00,517 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 02:19:00,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629034500] [2019-11-26 02:19:00,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:00,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:19:00,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584031411] [2019-11-26 02:19:00,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:19:00,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:19:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:19:00,519 INFO L87 Difference]: Start difference. First operand 2310 states and 8546 transitions. Second operand 6 states. [2019-11-26 02:19:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:00,713 INFO L93 Difference]: Finished difference Result 2175 states and 7682 transitions. [2019-11-26 02:19:00,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:19:00,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-11-26 02:19:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:00,730 INFO L225 Difference]: With dead ends: 2175 [2019-11-26 02:19:00,731 INFO L226 Difference]: Without dead ends: 1932 [2019-11-26 02:19:00,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:19:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2019-11-26 02:19:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1932. [2019-11-26 02:19:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2019-11-26 02:19:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 6908 transitions. [2019-11-26 02:19:00,802 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 6908 transitions. Word has length 38 [2019-11-26 02:19:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:00,802 INFO L462 AbstractCegarLoop]: Abstraction has 1932 states and 6908 transitions. [2019-11-26 02:19:00,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:19:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 6908 transitions. [2019-11-26 02:19:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:19:00,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:00,810 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 02:19:00,811 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:00,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1785519601, now seen corresponding path program 1 times [2019-11-26 02:19:00,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:00,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062763478] [2019-11-26 02:19:00,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:00,967 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 02:19:00,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062763478] [2019-11-26 02:19:00,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:00,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:19:00,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166523337] [2019-11-26 02:19:00,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:19:00,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:00,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:19:00,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:19:00,969 INFO L87 Difference]: Start difference. First operand 1932 states and 6908 transitions. Second operand 7 states. [2019-11-26 02:19:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:01,096 INFO L93 Difference]: Finished difference Result 1365 states and 4532 transitions. [2019-11-26 02:19:01,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:19:01,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-26 02:19:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:01,107 INFO L225 Difference]: With dead ends: 1365 [2019-11-26 02:19:01,107 INFO L226 Difference]: Without dead ends: 1176 [2019-11-26 02:19:01,108 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 02:19:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2019-11-26 02:19:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2019-11-26 02:19:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2019-11-26 02:19:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3884 transitions. [2019-11-26 02:19:01,152 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3884 transitions. Word has length 39 [2019-11-26 02:19:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:01,154 INFO L462 AbstractCegarLoop]: Abstraction has 1176 states and 3884 transitions. [2019-11-26 02:19:01,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:19:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3884 transitions. [2019-11-26 02:19:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:19:01,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:01,157 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 02:19:01,158 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:01,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1731441706, now seen corresponding path program 1 times [2019-11-26 02:19:01,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:01,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363152940] [2019-11-26 02:19:01,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:01,381 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 02:19:01,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363152940] [2019-11-26 02:19:01,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:01,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:19:01,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630557377] [2019-11-26 02:19:01,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:19:01,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:01,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:19:01,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:19:01,386 INFO L87 Difference]: Start difference. First operand 1176 states and 3884 transitions. Second operand 8 states. [2019-11-26 02:19:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:01,516 INFO L93 Difference]: Finished difference Result 1725 states and 5777 transitions. [2019-11-26 02:19:01,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:19:01,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2019-11-26 02:19:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:01,524 INFO L225 Difference]: With dead ends: 1725 [2019-11-26 02:19:01,524 INFO L226 Difference]: Without dead ends: 876 [2019-11-26 02:19:01,525 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 02:19:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-11-26 02:19:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2019-11-26 02:19:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-11-26 02:19:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2888 transitions. [2019-11-26 02:19:01,557 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2888 transitions. Word has length 40 [2019-11-26 02:19:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:01,557 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 2888 transitions. [2019-11-26 02:19:01,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:19:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2888 transitions. [2019-11-26 02:19:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:19:01,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:01,560 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 02:19:01,560 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash 502627164, now seen corresponding path program 2 times [2019-11-26 02:19:01,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:01,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987731798] [2019-11-26 02:19:01,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:01,690 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 02:19:01,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987731798] [2019-11-26 02:19:01,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:01,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:19:01,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270789325] [2019-11-26 02:19:01,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:19:01,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:01,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:19:01,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:19:01,692 INFO L87 Difference]: Start difference. First operand 876 states and 2888 transitions. Second operand 7 states. [2019-11-26 02:19:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:01,814 INFO L93 Difference]: Finished difference Result 1389 states and 4670 transitions. [2019-11-26 02:19:01,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:19:01,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-26 02:19:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:01,821 INFO L225 Difference]: With dead ends: 1389 [2019-11-26 02:19:01,821 INFO L226 Difference]: Without dead ends: 768 [2019-11-26 02:19:01,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:19:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-11-26 02:19:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2019-11-26 02:19:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-11-26 02:19:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2576 transitions. [2019-11-26 02:19:01,847 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2576 transitions. Word has length 40 [2019-11-26 02:19:01,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:01,848 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 2576 transitions. [2019-11-26 02:19:01,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:19:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2576 transitions. [2019-11-26 02:19:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:19:01,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:01,852 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 02:19:01,852 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash -714905248, now seen corresponding path program 3 times [2019-11-26 02:19:01,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:01,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165420143] [2019-11-26 02:19:01,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:01,987 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 02:19:01,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165420143] [2019-11-26 02:19:01,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:01,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:19:01,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838081886] [2019-11-26 02:19:01,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:19:01,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:01,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:19:01,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:19:01,989 INFO L87 Difference]: Start difference. First operand 768 states and 2576 transitions. Second operand 7 states. [2019-11-26 02:19:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:02,113 INFO L93 Difference]: Finished difference Result 1254 states and 4277 transitions. [2019-11-26 02:19:02,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:19:02,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-26 02:19:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:02,119 INFO L225 Difference]: With dead ends: 1254 [2019-11-26 02:19:02,120 INFO L226 Difference]: Without dead ends: 717 [2019-11-26 02:19:02,120 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 02:19:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-26 02:19:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-26 02:19:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-26 02:19:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2432 transitions. [2019-11-26 02:19:02,142 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2432 transitions. Word has length 40 [2019-11-26 02:19:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:02,143 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 2432 transitions. [2019-11-26 02:19:02,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:19:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2432 transitions. [2019-11-26 02:19:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:19:02,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:02,145 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 02:19:02,145 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1960044418, now seen corresponding path program 4 times [2019-11-26 02:19:02,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:02,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932319194] [2019-11-26 02:19:02,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:02,291 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 02:19:02,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932319194] [2019-11-26 02:19:02,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:02,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:19:02,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259596460] [2019-11-26 02:19:02,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:19:02,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:02,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:19:02,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:19:02,293 INFO L87 Difference]: Start difference. First operand 717 states and 2432 transitions. Second operand 7 states. [2019-11-26 02:19:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:02,431 INFO L93 Difference]: Finished difference Result 555 states and 1838 transitions. [2019-11-26 02:19:02,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:19:02,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-26 02:19:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:02,432 INFO L225 Difference]: With dead ends: 555 [2019-11-26 02:19:02,432 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:19:02,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:19:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:19:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:19:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:19:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:19:02,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-11-26 02:19:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:02,433 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:19:02,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:19:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:19:02,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:19:02,436 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:19:02,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:19:02 BasicIcfg [2019-11-26 02:19:02,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:19:02,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:19:02,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:19:02,439 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:19:02,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:58" (3/4) ... [2019-11-26 02:19:02,444 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:19:02,464 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:19:02,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:19:02,472 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:19:02,472 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-26 02:19:02,476 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:19:02,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:19:02,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:19:02,517 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_83a358c8-cb18-43fd-a3bd-b4896c3d636f/bin/utaipan/witness.graphml [2019-11-26 02:19:02,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:19:02,519 INFO L168 Benchmark]: Toolchain (without parser) took 5559.90 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 256.4 MB). Free memory was 944.8 MB in the beginning and 873.5 MB in the end (delta: 71.2 MB). Peak memory consumption was 327.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:02,519 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:02,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -132.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:02,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:02,520 INFO L168 Benchmark]: Boogie Preprocessor took 29.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:02,521 INFO L168 Benchmark]: RCFGBuilder took 456.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:02,521 INFO L168 Benchmark]: TraceAbstraction took 4249.77 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 139.5 MB). Free memory was 1.0 GB in the beginning and 885.4 MB in the end (delta: 163.1 MB). Peak memory consumption was 302.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:02,522 INFO L168 Benchmark]: Witness Printer took 77.90 ms. Allocated memory is still 1.3 GB. Free memory was 885.4 MB in the beginning and 873.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:02,524 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 676.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -132.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 456.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4249.77 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 139.5 MB). Free memory was 1.0 GB in the beginning and 885.4 MB in the end (delta: 163.1 MB). Peak memory consumption was 302.5 MB. Max. memory is 11.5 GB. * Witness Printer took 77.90 ms. Allocated memory is still 1.3 GB. Free memory was 885.4 MB in the beginning and 873.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 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, 113 locations, 1 error locations. Result: SAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 479 SDtfs, 699 SDslu, 1362 SDs, 0 SdLazy, 193 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5473occurred 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, 1.0s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 35816 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...