./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/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 cf7a1bd5a0da233b6f98d9da1a1f0c5498624db7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 15:27:53,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:27:53,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:27:53,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:27:53,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:27:53,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:27:53,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:27:53,789 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:27:53,790 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:27:53,791 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:27:53,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:27:53,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:27:53,792 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:27:53,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:27:53,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:27:53,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:27:53,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:27:53,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:27:53,795 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:27:53,796 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:27:53,796 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:27:53,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:27:53,798 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:27:53,798 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:27:53,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:27:53,799 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:27:53,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:27:53,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:27:53,800 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:27:53,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:27:53,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:27:53,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:27:53,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:27:53,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:27:53,801 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:27:53,802 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:27:53,802 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 15:27:53,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:27:53,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:27:53,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 15:27:53,810 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 15:27:53,810 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 15:27:53,811 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:27:53,811 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 15:27:53,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 15:27:53,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:27:53,812 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 15:27:53,813 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/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 -> cf7a1bd5a0da233b6f98d9da1a1f0c5498624db7 [2018-12-09 15:27:53,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:27:53,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:27:53,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:27:53,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:27:53,844 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:27:53,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt_true-unreach-call.i [2018-12-09 15:27:53,880 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/data/23498969d/2ada00ff58ac4a8fae9cf55cd4792925/FLAG5eae4a723 [2018-12-09 15:27:54,247 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:27:54,247 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/sv-benchmarks/c/pthread-wmm/safe027_tso.opt_true-unreach-call.i [2018-12-09 15:27:54,255 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/data/23498969d/2ada00ff58ac4a8fae9cf55cd4792925/FLAG5eae4a723 [2018-12-09 15:27:54,620 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/data/23498969d/2ada00ff58ac4a8fae9cf55cd4792925 [2018-12-09 15:27:54,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:27:54,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:27:54,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:27:54,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:27:54,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:27:54,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cabf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54, skipping insertion in model container [2018-12-09 15:27:54,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:27:54,654 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:27:54,815 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:27:54,823 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:27:54,891 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:27:54,923 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:27:54,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54 WrapperNode [2018-12-09 15:27:54,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:27:54,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:27:54,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:27:54,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:27:54,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:27:54,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:27:54,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:27:54,954 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:27:54,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... [2018-12-09 15:27:54,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:27:54,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:27:54,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:27:54,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:27:54,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/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 [2018-12-09 15:27:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 15:27:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 15:27:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-12-09 15:27:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-12-09 15:27:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-12-09 15:27:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-12-09 15:27:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 15:27:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:27:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:27:55,011 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 15:27:55,169 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:27:55,170 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 15:27:55,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:55 BoogieIcfgContainer [2018-12-09 15:27:55,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:27:55,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 15:27:55,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 15:27:55,172 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 15:27:55,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:27:54" (1/3) ... [2018-12-09 15:27:55,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:55, skipping insertion in model container [2018-12-09 15:27:55,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:54" (2/3) ... [2018-12-09 15:27:55,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:55, skipping insertion in model container [2018-12-09 15:27:55,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:55" (3/3) ... [2018-12-09 15:27:55,174 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt_true-unreach-call.i [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,194 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,196 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,197 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:27:55,204 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 15:27:55,204 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 15:27:55,209 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 15:27:55,218 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 15:27:55,232 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 15:27:55,232 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 15:27:55,232 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 15:27:55,232 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:27:55,232 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:27:55,233 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 15:27:55,233 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:27:55,233 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 15:27:55,238 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68places, 64 transitions [2018-12-09 15:27:55,795 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2018-12-09 15:27:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2018-12-09 15:27:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 15:27:55,811 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:55,812 INFO L402 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] [2018-12-09 15:27:55,813 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:55,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash -791038270, now seen corresponding path program 1 times [2018-12-09 15:27:55,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:55,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:55,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:55,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:55,855 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:55,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:55,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:27:55,968 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:55,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:27:55,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:27:55,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:27:55,981 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2018-12-09 15:27:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:56,142 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2018-12-09 15:27:56,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 15:27:56,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 15:27:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:56,173 INFO L225 Difference]: With dead ends: 13742 [2018-12-09 15:27:56,173 INFO L226 Difference]: Without dead ends: 5629 [2018-12-09 15:27:56,174 INFO L631 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 [2018-12-09 15:27:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2018-12-09 15:27:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2018-12-09 15:27:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2018-12-09 15:27:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2018-12-09 15:27:56,332 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2018-12-09 15:27:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:56,332 INFO L480 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2018-12-09 15:27:56,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:27:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2018-12-09 15:27:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 15:27:56,336 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:56,336 INFO L402 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] [2018-12-09 15:27:56,336 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:56,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:56,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1324297606, now seen corresponding path program 1 times [2018-12-09 15:27:56,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:56,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:56,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,339 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:56,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:56,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 15:27:56,383 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:56,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 15:27:56,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 15:27:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 15:27:56,385 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2018-12-09 15:27:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:56,492 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2018-12-09 15:27:56,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 15:27:56,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-09 15:27:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:56,511 INFO L225 Difference]: With dead ends: 6141 [2018-12-09 15:27:56,511 INFO L226 Difference]: Without dead ends: 5517 [2018-12-09 15:27:56,512 INFO L631 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 [2018-12-09 15:27:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2018-12-09 15:27:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2018-12-09 15:27:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2018-12-09 15:27:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2018-12-09 15:27:56,653 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2018-12-09 15:27:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:56,653 INFO L480 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2018-12-09 15:27:56,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 15:27:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2018-12-09 15:27:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 15:27:56,661 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:56,661 INFO L402 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] [2018-12-09 15:27:56,661 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:56,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:56,662 INFO L82 PathProgramCache]: Analyzing trace with hash -999628882, now seen corresponding path program 1 times [2018-12-09 15:27:56,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:56,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:56,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:56,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:56,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 15:27:56,734 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:56,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 15:27:56,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 15:27:56,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-09 15:27:56,735 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2018-12-09 15:27:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:56,811 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2018-12-09 15:27:56,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:27:56,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-12-09 15:27:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:56,827 INFO L225 Difference]: With dead ends: 5453 [2018-12-09 15:27:56,827 INFO L226 Difference]: Without dead ends: 4845 [2018-12-09 15:27:56,827 INFO L631 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 [2018-12-09 15:27:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2018-12-09 15:27:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2018-12-09 15:27:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2018-12-09 15:27:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2018-12-09 15:27:56,897 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2018-12-09 15:27:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:56,898 INFO L480 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2018-12-09 15:27:56,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 15:27:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2018-12-09 15:27:56,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 15:27:56,901 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:56,901 INFO L402 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] [2018-12-09 15:27:56,901 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:56,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1893784710, now seen corresponding path program 1 times [2018-12-09 15:27:56,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:56,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:56,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:56,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:56,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:56,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 15:27:56,955 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:56,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:27:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:27:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:27:56,956 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2018-12-09 15:27:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:57,012 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2018-12-09 15:27:57,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 15:27:57,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-09 15:27:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:57,019 INFO L225 Difference]: With dead ends: 3565 [2018-12-09 15:27:57,019 INFO L226 Difference]: Without dead ends: 3053 [2018-12-09 15:27:57,019 INFO L631 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 [2018-12-09 15:27:57,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2018-12-09 15:27:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2018-12-09 15:27:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2018-12-09 15:27:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2018-12-09 15:27:57,059 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2018-12-09 15:27:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:57,059 INFO L480 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2018-12-09 15:27:57,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:27:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2018-12-09 15:27:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 15:27:57,061 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:57,061 INFO L402 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] [2018-12-09 15:27:57,062 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:57,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:57,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1572457708, now seen corresponding path program 1 times [2018-12-09 15:27:57,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:57,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:57,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:57,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:57,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 15:27:57,134 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:57,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:27:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:27:57,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:27:57,135 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2018-12-09 15:27:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:57,204 INFO L93 Difference]: Finished difference Result 4733 states and 17540 transitions. [2018-12-09 15:27:57,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:27:57,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 15:27:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:57,210 INFO L225 Difference]: With dead ends: 4733 [2018-12-09 15:27:57,210 INFO L226 Difference]: Without dead ends: 2457 [2018-12-09 15:27:57,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:27:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2018-12-09 15:27:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2018-12-09 15:27:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2018-12-09 15:27:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9124 transitions. [2018-12-09 15:27:57,238 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9124 transitions. Word has length 39 [2018-12-09 15:27:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:57,238 INFO L480 AbstractCegarLoop]: Abstraction has 2457 states and 9124 transitions. [2018-12-09 15:27:57,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:27:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9124 transitions. [2018-12-09 15:27:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 15:27:57,240 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:57,240 INFO L402 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] [2018-12-09 15:27:57,240 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:57,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:57,240 INFO L82 PathProgramCache]: Analyzing trace with hash 540968834, now seen corresponding path program 2 times [2018-12-09 15:27:57,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:57,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:27:57,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,242 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:57,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:57,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 15:27:57,308 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:57,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:27:57,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:27:57,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:27:57,308 INFO L87 Difference]: Start difference. First operand 2457 states and 9124 transitions. Second operand 7 states. [2018-12-09 15:27:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:57,383 INFO L93 Difference]: Finished difference Result 4057 states and 15220 transitions. [2018-12-09 15:27:57,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:27:57,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 15:27:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:57,388 INFO L225 Difference]: With dead ends: 4057 [2018-12-09 15:27:57,388 INFO L226 Difference]: Without dead ends: 2261 [2018-12-09 15:27:57,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:27:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2018-12-09 15:27:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2018-12-09 15:27:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2018-12-09 15:27:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 8528 transitions. [2018-12-09 15:27:57,420 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 8528 transitions. Word has length 39 [2018-12-09 15:27:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:57,420 INFO L480 AbstractCegarLoop]: Abstraction has 2261 states and 8528 transitions. [2018-12-09 15:27:57,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:27:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 8528 transitions. [2018-12-09 15:27:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 15:27:57,422 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:57,422 INFO L402 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] [2018-12-09 15:27:57,422 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:57,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1549190684, now seen corresponding path program 3 times [2018-12-09 15:27:57,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:57,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:27:57,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,424 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:57,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:57,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 15:27:57,499 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:57,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:27:57,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:27:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:27:57,499 INFO L87 Difference]: Start difference. First operand 2261 states and 8528 transitions. Second operand 7 states. [2018-12-09 15:27:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:57,559 INFO L93 Difference]: Finished difference Result 3797 states and 14416 transitions. [2018-12-09 15:27:57,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:27:57,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 15:27:57,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:57,563 INFO L225 Difference]: With dead ends: 3797 [2018-12-09 15:27:57,563 INFO L226 Difference]: Without dead ends: 2161 [2018-12-09 15:27:57,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:27:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-12-09 15:27:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2161. [2018-12-09 15:27:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2161 states. [2018-12-09 15:27:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 8220 transitions. [2018-12-09 15:27:57,587 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 8220 transitions. Word has length 39 [2018-12-09 15:27:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:57,588 INFO L480 AbstractCegarLoop]: Abstraction has 2161 states and 8220 transitions. [2018-12-09 15:27:57,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:27:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 8220 transitions. [2018-12-09 15:27:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 15:27:57,589 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:27:57,589 INFO L402 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] [2018-12-09 15:27:57,589 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:27:57,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:27:57,589 INFO L82 PathProgramCache]: Analyzing trace with hash -481726390, now seen corresponding path program 4 times [2018-12-09 15:27:57,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:27:57,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:27:57,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:27:57,590 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:27:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:27:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:27:57,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:27:57,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 15:27:57,648 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:27:57,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:27:57,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:27:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:27:57,649 INFO L87 Difference]: Start difference. First operand 2161 states and 8220 transitions. Second operand 7 states. [2018-12-09 15:27:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:27:57,692 INFO L93 Difference]: Finished difference Result 1649 states and 6172 transitions. [2018-12-09 15:27:57,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:27:57,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 15:27:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:27:57,693 INFO L225 Difference]: With dead ends: 1649 [2018-12-09 15:27:57,693 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 15:27:57,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:27:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 15:27:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 15:27:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 15:27:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 15:27:57,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-09 15:27:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:27:57,694 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:27:57,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:27:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 15:27:57,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 15:27:57,696 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 15:27:57,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:57 BasicIcfg [2018-12-09 15:27:57,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 15:27:57,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:27:57,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:27:57,698 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:27:57,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:55" (3/4) ... [2018-12-09 15:27:57,701 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 15:27:57,705 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-12-09 15:27:57,705 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-12-09 15:27:57,705 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-12-09 15:27:57,705 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-12-09 15:27:57,708 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-09 15:27:57,708 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 15:27:57,734 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8733f8a1-7ff8-4558-a0c1-3f6dafff9b72/bin-2019/utaipan/witness.graphml [2018-12-09 15:27:57,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:27:57,734 INFO L168 Benchmark]: Toolchain (without parser) took 3111.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 945.9 MB in the beginning and 1.0 GB in the end (delta: -83.0 MB). Peak memory consumption was 108.9 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,735 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:27:57,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,736 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,736 INFO L168 Benchmark]: RCFGBuilder took 198.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,736 INFO L168 Benchmark]: TraceAbstraction took 2527.16 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 113.6 MB. Max. memory is 11.5 GB. [2018-12-09 15:27:57,737 INFO L168 Benchmark]: Witness Printer took 36.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:27:57,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2527.16 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 113.6 MB. Max. memory is 11.5 GB. * Witness Printer took 36.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 560 SDtfs, 855 SDslu, 1528 SDs, 0 SdLazy, 188 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13136occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 27742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...