./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_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_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/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 4a0b27241f4f27e3ab193e4d38ff6172d0c0037f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 13:04:07,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 13:04:07,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 13:04:07,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 13:04:07,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 13:04:07,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 13:04:07,988 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 13:04:07,989 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 13:04:07,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 13:04:07,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 13:04:07,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 13:04:07,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 13:04:07,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 13:04:07,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 13:04:07,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 13:04:07,992 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 13:04:07,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 13:04:07,994 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 13:04:07,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 13:04:07,995 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 13:04:07,996 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 13:04:07,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 13:04:07,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 13:04:07,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 13:04:07,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 13:04:07,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 13:04:07,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 13:04:07,999 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 13:04:07,999 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 13:04:08,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 13:04:08,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 13:04:08,000 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 13:04:08,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 13:04:08,001 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 13:04:08,001 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 13:04:08,001 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 13:04:08,002 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 13:04:08,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 13:04:08,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 13:04:08,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 13:04:08,010 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 13:04:08,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 13:04:08,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 13:04:08,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 13:04:08,012 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 13:04:08,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:04:08,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 13:04:08,013 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 13:04:08,013 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_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/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 -> 4a0b27241f4f27e3ab193e4d38ff6172d0c0037f [2018-12-02 13:04:08,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 13:04:08,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 13:04:08,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 13:04:08,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 13:04:08,045 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 13:04:08,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_true-unreach-call.i [2018-12-02 13:04:08,082 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/data/9c1c2815b/128ac7436b274020bfb0b41df5e97415/FLAG2a492bc49 [2018-12-02 13:04:08,552 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 13:04:08,552 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_true-unreach-call.i [2018-12-02 13:04:08,559 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/data/9c1c2815b/128ac7436b274020bfb0b41df5e97415/FLAG2a492bc49 [2018-12-02 13:04:08,568 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/data/9c1c2815b/128ac7436b274020bfb0b41df5e97415 [2018-12-02 13:04:08,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 13:04:08,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 13:04:08,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 13:04:08,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 13:04:08,573 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 13:04:08,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6ee20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08, skipping insertion in model container [2018-12-02 13:04:08,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 13:04:08,598 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 13:04:08,759 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:04:08,766 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 13:04:08,827 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:04:08,858 INFO L195 MainTranslator]: Completed translation [2018-12-02 13:04:08,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08 WrapperNode [2018-12-02 13:04:08,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 13:04:08,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 13:04:08,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 13:04:08,859 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 13:04:08,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 13:04:08,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 13:04:08,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 13:04:08,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 13:04:08,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... [2018-12-02 13:04:08,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 13:04:08,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 13:04:08,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 13:04:08,901 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 13:04:08,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/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 [2018-12-02 13:04:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 13:04:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 13:04:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 13:04:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 13:04:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-12-02 13:04:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-12-02 13:04:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-12-02 13:04:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-12-02 13:04:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-12-02 13:04:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-12-02 13:04:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-12-02 13:04:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-12-02 13:04:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 13:04:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 13:04:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 13:04:08,944 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 13:04:09,130 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 13:04:09,130 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 13:04:09,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09 BoogieIcfgContainer [2018-12-02 13:04:09,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 13:04:09,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 13:04:09,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 13:04:09,133 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 13:04:09,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:04:08" (1/3) ... [2018-12-02 13:04:09,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44134065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:09, skipping insertion in model container [2018-12-02 13:04:09,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:08" (2/3) ... [2018-12-02 13:04:09,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44134065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:09, skipping insertion in model container [2018-12-02 13:04:09,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09" (3/3) ... [2018-12-02 13:04:09,135 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_true-unreach-call.i [2018-12-02 13:04:09,158 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,158 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,159 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,160 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,161 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,162 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,163 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,164 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,165 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 13:04:09,173 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 13:04:09,174 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 13:04:09,181 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 13:04:09,191 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 13:04:09,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 13:04:09,206 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 13:04:09,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 13:04:09,206 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 13:04:09,206 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 13:04:09,206 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 13:04:09,206 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 13:04:09,206 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 13:04:09,212 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66places, 62 transitions [2018-12-02 13:04:09,781 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13134 states. [2018-12-02 13:04:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states. [2018-12-02 13:04:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 13:04:09,797 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:09,798 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] [2018-12-02 13:04:09,799 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:09,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:09,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2047867289, now seen corresponding path program 1 times [2018-12-02 13:04:09,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:09,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:09,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:09,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:09,841 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:09,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:09,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 13:04:09,964 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:09,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 13:04:09,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 13:04:09,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 13:04:09,978 INFO L87 Difference]: Start difference. First operand 13134 states. Second operand 4 states. [2018-12-02 13:04:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:10,101 INFO L93 Difference]: Finished difference Result 13740 states and 55791 transitions. [2018-12-02 13:04:10,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 13:04:10,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-02 13:04:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:10,138 INFO L225 Difference]: With dead ends: 13740 [2018-12-02 13:04:10,138 INFO L226 Difference]: Without dead ends: 5627 [2018-12-02 13:04:10,140 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 [2018-12-02 13:04:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2018-12-02 13:04:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 5627. [2018-12-02 13:04:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5627 states. [2018-12-02 13:04:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 22350 transitions. [2018-12-02 13:04:10,295 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 22350 transitions. Word has length 33 [2018-12-02 13:04:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:10,296 INFO L480 AbstractCegarLoop]: Abstraction has 5627 states and 22350 transitions. [2018-12-02 13:04:10,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 13:04:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 22350 transitions. [2018-12-02 13:04:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 13:04:10,299 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:10,300 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] [2018-12-02 13:04:10,300 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:10,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -142231847, now seen corresponding path program 1 times [2018-12-02 13:04:10,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:10,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:10,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,305 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:10,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:10,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 13:04:10,361 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:10,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 13:04:10,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 13:04:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 13:04:10,363 INFO L87 Difference]: Start difference. First operand 5627 states and 22350 transitions. Second operand 5 states. [2018-12-02 13:04:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:10,442 INFO L93 Difference]: Finished difference Result 6139 states and 23830 transitions. [2018-12-02 13:04:10,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 13:04:10,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-12-02 13:04:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:10,460 INFO L225 Difference]: With dead ends: 6139 [2018-12-02 13:04:10,460 INFO L226 Difference]: Without dead ends: 5515 [2018-12-02 13:04:10,460 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 [2018-12-02 13:04:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2018-12-02 13:04:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 5515. [2018-12-02 13:04:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5515 states. [2018-12-02 13:04:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 21818 transitions. [2018-12-02 13:04:10,601 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 21818 transitions. Word has length 34 [2018-12-02 13:04:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:10,601 INFO L480 AbstractCegarLoop]: Abstraction has 5515 states and 21818 transitions. [2018-12-02 13:04:10,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 13:04:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 21818 transitions. [2018-12-02 13:04:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 13:04:10,605 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:10,605 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] [2018-12-02 13:04:10,606 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:10,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash 728950643, now seen corresponding path program 1 times [2018-12-02 13:04:10,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:10,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:10,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,608 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:10,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:10,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 13:04:10,644 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:10,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 13:04:10,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 13:04:10,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 13:04:10,645 INFO L87 Difference]: Start difference. First operand 5515 states and 21818 transitions. Second operand 6 states. [2018-12-02 13:04:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:10,709 INFO L93 Difference]: Finished difference Result 5451 states and 20826 transitions. [2018-12-02 13:04:10,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 13:04:10,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-12-02 13:04:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:10,725 INFO L225 Difference]: With dead ends: 5451 [2018-12-02 13:04:10,725 INFO L226 Difference]: Without dead ends: 4843 [2018-12-02 13:04:10,726 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 [2018-12-02 13:04:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2018-12-02 13:04:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4843. [2018-12-02 13:04:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2018-12-02 13:04:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 18794 transitions. [2018-12-02 13:04:10,805 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 18794 transitions. Word has length 35 [2018-12-02 13:04:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:10,806 INFO L480 AbstractCegarLoop]: Abstraction has 4843 states and 18794 transitions. [2018-12-02 13:04:10,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 13:04:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 18794 transitions. [2018-12-02 13:04:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 13:04:10,810 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:10,810 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] [2018-12-02 13:04:10,810 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:10,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:10,810 INFO L82 PathProgramCache]: Analyzing trace with hash 908223265, now seen corresponding path program 1 times [2018-12-02 13:04:10,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:10,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:10,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,812 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:10,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:10,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 13:04:10,855 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:10,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 13:04:10,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 13:04:10,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 13:04:10,856 INFO L87 Difference]: Start difference. First operand 4843 states and 18794 transitions. Second operand 7 states. [2018-12-02 13:04:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:10,931 INFO L93 Difference]: Finished difference Result 3563 states and 13034 transitions. [2018-12-02 13:04:10,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 13:04:10,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-12-02 13:04:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:10,938 INFO L225 Difference]: With dead ends: 3563 [2018-12-02 13:04:10,938 INFO L226 Difference]: Without dead ends: 3051 [2018-12-02 13:04:10,939 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 [2018-12-02 13:04:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2018-12-02 13:04:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3051. [2018-12-02 13:04:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2018-12-02 13:04:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 11178 transitions. [2018-12-02 13:04:10,980 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 11178 transitions. Word has length 36 [2018-12-02 13:04:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:10,981 INFO L480 AbstractCegarLoop]: Abstraction has 3051 states and 11178 transitions. [2018-12-02 13:04:10,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 13:04:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 11178 transitions. [2018-12-02 13:04:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 13:04:10,983 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:10,983 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] [2018-12-02 13:04:10,983 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:10,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash 552013999, now seen corresponding path program 1 times [2018-12-02 13:04:10,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:10,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:10,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:10,985 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:11,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:11,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 13:04:11,041 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:11,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 13:04:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 13:04:11,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 13:04:11,041 INFO L87 Difference]: Start difference. First operand 3051 states and 11178 transitions. Second operand 7 states. [2018-12-02 13:04:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:11,101 INFO L93 Difference]: Finished difference Result 5131 states and 18858 transitions. [2018-12-02 13:04:11,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 13:04:11,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-12-02 13:04:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:11,108 INFO L225 Difference]: With dead ends: 5131 [2018-12-02 13:04:11,108 INFO L226 Difference]: Without dead ends: 2855 [2018-12-02 13:04:11,108 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 [2018-12-02 13:04:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2018-12-02 13:04:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2855. [2018-12-02 13:04:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2855 states. [2018-12-02 13:04:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 10542 transitions. [2018-12-02 13:04:11,147 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 10542 transitions. Word has length 37 [2018-12-02 13:04:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:11,147 INFO L480 AbstractCegarLoop]: Abstraction has 2855 states and 10542 transitions. [2018-12-02 13:04:11,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 13:04:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 10542 transitions. [2018-12-02 13:04:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 13:04:11,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:11,149 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] [2018-12-02 13:04:11,149 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:11,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:11,150 INFO L82 PathProgramCache]: Analyzing trace with hash 385641711, now seen corresponding path program 2 times [2018-12-02 13:04:11,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:11,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:04:11,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,151 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:11,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:11,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 13:04:11,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:11,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 13:04:11,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 13:04:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 13:04:11,198 INFO L87 Difference]: Start difference. First operand 2855 states and 10542 transitions. Second operand 6 states. [2018-12-02 13:04:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:11,254 INFO L93 Difference]: Finished difference Result 4535 states and 16902 transitions. [2018-12-02 13:04:11,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 13:04:11,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-12-02 13:04:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:11,261 INFO L225 Difference]: With dead ends: 4535 [2018-12-02 13:04:11,261 INFO L226 Difference]: Without dead ends: 2755 [2018-12-02 13:04:11,261 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-02 13:04:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2018-12-02 13:04:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2755. [2018-12-02 13:04:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2018-12-02 13:04:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 10202 transitions. [2018-12-02 13:04:11,328 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 10202 transitions. Word has length 37 [2018-12-02 13:04:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:11,328 INFO L480 AbstractCegarLoop]: Abstraction has 2755 states and 10202 transitions. [2018-12-02 13:04:11,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 13:04:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 10202 transitions. [2018-12-02 13:04:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 13:04:11,331 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:11,331 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] [2018-12-02 13:04:11,331 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:11,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1966895343, now seen corresponding path program 3 times [2018-12-02 13:04:11,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:11,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 13:04:11,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,333 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:11,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:11,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 13:04:11,380 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:11,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 13:04:11,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 13:04:11,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 13:04:11,380 INFO L87 Difference]: Start difference. First operand 2755 states and 10202 transitions. Second operand 6 states. [2018-12-02 13:04:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:11,432 INFO L93 Difference]: Finished difference Result 4611 states and 17130 transitions. [2018-12-02 13:04:11,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 13:04:11,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-12-02 13:04:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:11,440 INFO L225 Difference]: With dead ends: 4611 [2018-12-02 13:04:11,440 INFO L226 Difference]: Without dead ends: 2575 [2018-12-02 13:04:11,441 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-02 13:04:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2018-12-02 13:04:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2575. [2018-12-02 13:04:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2018-12-02 13:04:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 9590 transitions. [2018-12-02 13:04:11,487 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 9590 transitions. Word has length 37 [2018-12-02 13:04:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:11,488 INFO L480 AbstractCegarLoop]: Abstraction has 2575 states and 9590 transitions. [2018-12-02 13:04:11,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 13:04:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 9590 transitions. [2018-12-02 13:04:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 13:04:11,489 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:04:11,490 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] [2018-12-02 13:04:11,490 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:04:11,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:04:11,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1178894303, now seen corresponding path program 4 times [2018-12-02 13:04:11,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:04:11,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 13:04:11,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:04:11,491 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:04:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:04:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:04:11,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:04:11,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 13:04:11,546 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 13:04:11,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 13:04:11,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 13:04:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 13:04:11,547 INFO L87 Difference]: Start difference. First operand 2575 states and 9590 transitions. Second operand 7 states. [2018-12-02 13:04:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:04:11,594 INFO L93 Difference]: Finished difference Result 2063 states and 7542 transitions. [2018-12-02 13:04:11,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 13:04:11,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-12-02 13:04:11,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:04:11,595 INFO L225 Difference]: With dead ends: 2063 [2018-12-02 13:04:11,595 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 13:04:11,595 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 [2018-12-02 13:04:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 13:04:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 13:04:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 13:04:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 13:04:11,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-12-02 13:04:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:04:11,596 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 13:04:11,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 13:04:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 13:04:11,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 13:04:11,598 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 13:04:11,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:04:11 BasicIcfg [2018-12-02 13:04:11,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 13:04:11,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 13:04:11,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 13:04:11,599 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 13:04:11,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09" (3/4) ... [2018-12-02 13:04:11,601 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 13:04:11,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-12-02 13:04:11,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-12-02 13:04:11,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-12-02 13:04:11,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-12-02 13:04:11,608 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 13:04:11,608 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 13:04:11,632 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_71aaffe1-5acf-4f08-a2c0-f6341dfe89ea/bin-2019/utaipan/witness.graphml [2018-12-02 13:04:11,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 13:04:11,633 INFO L168 Benchmark]: Toolchain (without parser) took 3062.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 952.4 MB in the beginning and 978.9 MB in the end (delta: -26.5 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,633 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:04:11,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.21 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. [2018-12-02 13:04:11,634 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,634 INFO L168 Benchmark]: RCFGBuilder took 229.60 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,634 INFO L168 Benchmark]: TraceAbstraction took 2467.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 985.7 MB in the end (delta: 55.1 MB). Peak memory consumption was 134.2 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,635 INFO L168 Benchmark]: Witness Printer took 33.22 ms. Allocated memory is still 1.2 GB. Free memory was 985.7 MB in the beginning and 978.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-02 13:04:11,636 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.21 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 14.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 229.60 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2467.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 985.7 MB in the end (delta: 55.1 MB). Peak memory consumption was 134.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.22 ms. Allocated memory is still 1.2 GB. Free memory was 985.7 MB in the beginning and 978.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 538 SDtfs, 817 SDslu, 1387 SDs, 0 SdLazy, 162 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13134occurred 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: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 24206 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...