./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_5_true-unreach-call_true-valid-memsafety_false-termination.c --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_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_5_true-unreach-call_true-valid-memsafety_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/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 4f33d015f37d4475f0ca85a8ea6311ffc3e89abb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:33:27,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 09:33:27,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 09:33:27,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 09:33:27,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 09:33:27,448 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 09:33:27,449 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 09:33:27,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 09:33:27,450 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 09:33:27,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 09:33:27,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 09:33:27,451 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 09:33:27,452 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 09:33:27,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 09:33:27,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 09:33:27,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 09:33:27,453 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 09:33:27,454 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 09:33:27,455 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 09:33:27,456 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 09:33:27,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 09:33:27,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 09:33:27,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 09:33:27,459 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 09:33:27,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 09:33:27,459 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 09:33:27,460 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 09:33:27,460 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 09:33:27,461 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 09:33:27,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 09:33:27,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 09:33:27,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 09:33:27,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 09:33:27,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 09:33:27,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 09:33:27,463 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 09:33:27,463 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 09:33:27,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 09:33:27,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 09:33:27,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 09:33:27,471 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 09:33:27,471 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 09:33:27,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 09:33:27,472 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 09:33:27,473 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 09:33:27,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 09:33:27,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 09:33:27,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 09:33:27,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 09:33:27,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 09:33:27,475 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_fc86dfac-7236-4df6-add8-d6660eab3f3c/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 -> 4f33d015f37d4475f0ca85a8ea6311ffc3e89abb [2018-12-02 09:33:27,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 09:33:27,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 09:33:27,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 09:33:27,502 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 09:33:27,502 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 09:33:27,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/../../sv-benchmarks/c/locks/test_locks_5_true-unreach-call_true-valid-memsafety_false-termination.c [2018-12-02 09:33:27,538 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/data/5b5e6c849/554a2e622368406788a990d7c2cc2811/FLAG31e9da513 [2018-12-02 09:33:27,976 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 09:33:27,976 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/sv-benchmarks/c/locks/test_locks_5_true-unreach-call_true-valid-memsafety_false-termination.c [2018-12-02 09:33:27,980 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/data/5b5e6c849/554a2e622368406788a990d7c2cc2811/FLAG31e9da513 [2018-12-02 09:33:27,988 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/data/5b5e6c849/554a2e622368406788a990d7c2cc2811 [2018-12-02 09:33:27,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 09:33:27,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 09:33:27,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:27,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 09:33:27,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 09:33:27,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:27" (1/1) ... [2018-12-02 09:33:27,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:27, skipping insertion in model container [2018-12-02 09:33:27,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:27" (1/1) ... [2018-12-02 09:33:27,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 09:33:28,009 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 09:33:28,093 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:28,095 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 09:33:28,106 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:28,114 INFO L195 MainTranslator]: Completed translation [2018-12-02 09:33:28,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28 WrapperNode [2018-12-02 09:33:28,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:28,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:28,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 09:33:28,115 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 09:33:28,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:28,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 09:33:28,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 09:33:28,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 09:33:28,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 09:33:28,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 09:33:28,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 09:33:28,169 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 09:33:28,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/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 09:33:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 09:33:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 09:33:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 09:33:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 09:33:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 09:33:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 09:33:28,307 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 09:33:28,307 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 09:33:28,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28 BoogieIcfgContainer [2018-12-02 09:33:28,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 09:33:28,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 09:33:28,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 09:33:28,311 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 09:33:28,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:33:27" (1/3) ... [2018-12-02 09:33:28,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4dc467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:28, skipping insertion in model container [2018-12-02 09:33:28,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (2/3) ... [2018-12-02 09:33:28,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4dc467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:28, skipping insertion in model container [2018-12-02 09:33:28,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28" (3/3) ... [2018-12-02 09:33:28,314 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_5_true-unreach-call_true-valid-memsafety_false-termination.c [2018-12-02 09:33:28,322 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 09:33:28,328 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 09:33:28,338 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 09:33:28,356 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 09:33:28,357 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 09:33:28,357 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 09:33:28,357 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 09:33:28,357 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 09:33:28,357 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 09:33:28,357 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 09:33:28,357 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 09:33:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-02 09:33:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 09:33:28,371 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,371 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,373 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2018-12-02 09:33:28,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,407 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,470 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 09:33:28,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,471 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,483 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2018-12-02 09:33:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,507 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2018-12-02 09:33:28,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-12-02 09:33:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,515 INFO L225 Difference]: With dead ends: 57 [2018-12-02 09:33:28,516 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 09:33:28,517 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 09:33:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2018-12-02 09:33:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 09:33:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2018-12-02 09:33:28,539 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2018-12-02 09:33:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,540 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2018-12-02 09:33:28,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2018-12-02 09:33:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 09:33:28,540 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,540 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,541 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,541 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2018-12-02 09:33:28,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,542 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,564 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 09:33:28,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,564 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,565 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2018-12-02 09:33:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,582 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2018-12-02 09:33:28,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-12-02 09:33:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,583 INFO L225 Difference]: With dead ends: 67 [2018-12-02 09:33:28,583 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 09:33:28,584 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 09:33:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-02 09:33:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 09:33:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2018-12-02 09:33:28,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2018-12-02 09:33:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,589 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2018-12-02 09:33:28,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2018-12-02 09:33:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 09:33:28,589 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,589 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,590 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2018-12-02 09:33:28,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,591 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,607 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 09:33:28,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,608 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,609 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2018-12-02 09:33:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,619 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2018-12-02 09:33:28,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-02 09:33:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,619 INFO L225 Difference]: With dead ends: 63 [2018-12-02 09:33:28,619 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 09:33:28,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 09:33:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-12-02 09:33:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 09:33:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2018-12-02 09:33:28,623 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2018-12-02 09:33:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,623 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2018-12-02 09:33:28,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2018-12-02 09:33:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 09:33:28,624 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,624 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2018-12-02 09:33:28,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,625 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,638 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 09:33:28,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,638 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,639 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2018-12-02 09:33:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,649 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2018-12-02 09:33:28,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-02 09:33:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,650 INFO L225 Difference]: With dead ends: 76 [2018-12-02 09:33:28,650 INFO L226 Difference]: Without dead ends: 74 [2018-12-02 09:33:28,650 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-12-02 09:33:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2018-12-02 09:33:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-02 09:33:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2018-12-02 09:33:28,654 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2018-12-02 09:33:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,654 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2018-12-02 09:33:28,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2018-12-02 09:33:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 09:33:28,654 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,655 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2018-12-02 09:33:28,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,672 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 09:33:28,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,672 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,673 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2018-12-02 09:33:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,687 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2018-12-02 09:33:28,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-02 09:33:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,688 INFO L225 Difference]: With dead ends: 124 [2018-12-02 09:33:28,688 INFO L226 Difference]: Without dead ends: 76 [2018-12-02 09:33:28,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-12-02 09:33:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-12-02 09:33:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-12-02 09:33:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2018-12-02 09:33:28,692 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2018-12-02 09:33:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,692 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2018-12-02 09:33:28,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2018-12-02 09:33:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 09:33:28,693 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,693 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,693 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2018-12-02 09:33:28,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,694 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,707 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 09:33:28,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,707 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,708 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2018-12-02 09:33:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,721 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2018-12-02 09:33:28,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-12-02 09:33:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,722 INFO L225 Difference]: With dead ends: 111 [2018-12-02 09:33:28,722 INFO L226 Difference]: Without dead ends: 78 [2018-12-02 09:33:28,722 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-12-02 09:33:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2018-12-02 09:33:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-12-02 09:33:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2018-12-02 09:33:28,729 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2018-12-02 09:33:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,729 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2018-12-02 09:33:28,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2018-12-02 09:33:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 09:33:28,730 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,730 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,730 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2018-12-02 09:33:28,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,732 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,747 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 09:33:28,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,747 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,748 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2018-12-02 09:33:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,757 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2018-12-02 09:33:28,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-12-02 09:33:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,759 INFO L225 Difference]: With dead ends: 132 [2018-12-02 09:33:28,759 INFO L226 Difference]: Without dead ends: 130 [2018-12-02 09:33:28,759 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-12-02 09:33:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2018-12-02 09:33:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-12-02 09:33:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2018-12-02 09:33:28,767 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2018-12-02 09:33:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,768 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2018-12-02 09:33:28,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2018-12-02 09:33:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 09:33:28,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,769 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,769 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2018-12-02 09:33:28,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,785 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 09:33:28,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,785 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,786 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2018-12-02 09:33:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,795 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2018-12-02 09:33:28,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-12-02 09:33:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,795 INFO L225 Difference]: With dead ends: 232 [2018-12-02 09:33:28,795 INFO L226 Difference]: Without dead ends: 138 [2018-12-02 09:33:28,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-12-02 09:33:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2018-12-02 09:33:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-12-02 09:33:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2018-12-02 09:33:28,802 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2018-12-02 09:33:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,802 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2018-12-02 09:33:28,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2018-12-02 09:33:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 09:33:28,802 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,802 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,803 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2018-12-02 09:33:28,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,804 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,816 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 09:33:28,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,816 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,817 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2018-12-02 09:33:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,828 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2018-12-02 09:33:28,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-02 09:33:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,829 INFO L225 Difference]: With dead ends: 204 [2018-12-02 09:33:28,829 INFO L226 Difference]: Without dead ends: 142 [2018-12-02 09:33:28,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-12-02 09:33:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2018-12-02 09:33:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-12-02 09:33:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2018-12-02 09:33:28,835 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2018-12-02 09:33:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,835 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2018-12-02 09:33:28,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2018-12-02 09:33:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 09:33:28,836 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,836 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,836 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2018-12-02 09:33:28,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,837 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,847 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 09:33:28,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,848 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,848 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2018-12-02 09:33:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,864 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2018-12-02 09:33:28,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-02 09:33:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,865 INFO L225 Difference]: With dead ends: 236 [2018-12-02 09:33:28,865 INFO L226 Difference]: Without dead ends: 234 [2018-12-02 09:33:28,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-12-02 09:33:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2018-12-02 09:33:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-12-02 09:33:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2018-12-02 09:33:28,871 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2018-12-02 09:33:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,872 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2018-12-02 09:33:28,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2018-12-02 09:33:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 09:33:28,872 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,872 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,872 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,873 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2018-12-02 09:33:28,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,873 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,881 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 09:33:28,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,882 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,882 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2018-12-02 09:33:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,896 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2018-12-02 09:33:28,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-02 09:33:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,897 INFO L225 Difference]: With dead ends: 444 [2018-12-02 09:33:28,897 INFO L226 Difference]: Without dead ends: 258 [2018-12-02 09:33:28,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-12-02 09:33:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2018-12-02 09:33:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-12-02 09:33:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2018-12-02 09:33:28,904 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2018-12-02 09:33:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,905 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2018-12-02 09:33:28,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2018-12-02 09:33:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 09:33:28,905 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,905 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,905 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2018-12-02 09:33:28,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,906 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,917 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 09:33:28,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,917 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,917 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2018-12-02 09:33:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,927 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2018-12-02 09:33:28,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-02 09:33:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,928 INFO L225 Difference]: With dead ends: 384 [2018-12-02 09:33:28,928 INFO L226 Difference]: Without dead ends: 266 [2018-12-02 09:33:28,928 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-12-02 09:33:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2018-12-02 09:33:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-12-02 09:33:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2018-12-02 09:33:28,934 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2018-12-02 09:33:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,934 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2018-12-02 09:33:28,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2018-12-02 09:33:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 09:33:28,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,935 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,935 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2018-12-02 09:33:28,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,936 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,945 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 09:33:28,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,945 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,946 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2018-12-02 09:33:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:28,961 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2018-12-02 09:33:28,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:28,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-02 09:33:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:28,963 INFO L225 Difference]: With dead ends: 426 [2018-12-02 09:33:28,963 INFO L226 Difference]: Without dead ends: 424 [2018-12-02 09:33:28,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-12-02 09:33:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2018-12-02 09:33:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-12-02 09:33:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2018-12-02 09:33:28,972 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2018-12-02 09:33:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:28,972 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2018-12-02 09:33:28,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2018-12-02 09:33:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 09:33:28,973 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,973 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,974 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2018-12-02 09:33:28,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:28,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:28,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:28,975 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:28,984 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 09:33:28,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:28,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 09:33:28,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:28,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 09:33:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 09:33:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:28,985 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2018-12-02 09:33:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:29,001 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2018-12-02 09:33:29,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 09:33:29,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-02 09:33:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:29,002 INFO L225 Difference]: With dead ends: 856 [2018-12-02 09:33:29,002 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 09:33:29,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 09:33:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 09:33:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 09:33:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 09:33:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 09:33:29,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-12-02 09:33:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:29,004 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 09:33:29,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 09:33:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 09:33:29,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 09:33:29,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 09:33:29,019 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 09:33:29,019 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 09:33:29,019 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 09:33:29,020 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L451 ceAbstractionStarter]: At program point L89(lines 5 93) the Hoare annotation is: true [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,020 INFO L448 ceAbstractionStarter]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L74(line 74) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L451 ceAbstractionStarter]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,021 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2018-12-02 09:33:29,021 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-12-02 09:33:29,022 INFO L448 ceAbstractionStarter]: For program point L84(line 84) no Hoare annotation was computed. [2018-12-02 09:33:29,022 INFO L444 ceAbstractionStarter]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2018-12-02 09:33:29,022 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2018-12-02 09:33:29,022 INFO L448 ceAbstractionStarter]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2018-12-02 09:33:29,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:33:29 BoogieIcfgContainer [2018-12-02 09:33:29,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 09:33:29,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 09:33:29,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 09:33:29,027 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 09:33:29,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28" (3/4) ... [2018-12-02 09:33:29,030 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 09:33:29,034 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 09:33:29,034 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 09:33:29,037 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 09:33:29,037 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 09:33:29,037 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 09:33:29,066 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fc86dfac-7236-4df6-add8-d6660eab3f3c/bin-2019/utaipan/witness.graphml [2018-12-02 09:33:29,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 09:33:29,067 INFO L168 Benchmark]: Toolchain (without parser) took 1076.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 961.4 MB in the beginning and 957.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 125.5 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:29,067 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 09:33:29,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.25 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:29,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 09:33:29,068 INFO L168 Benchmark]: Boogie Preprocessor took 41.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:29,068 INFO L168 Benchmark]: RCFGBuilder took 139.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:29,069 INFO L168 Benchmark]: TraceAbstraction took 718.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 957.0 MB in the end (delta: 143.9 MB). Peak memory consumption was 143.9 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:29,069 INFO L168 Benchmark]: Witness Printer took 39.15 ms. Allocated memory is still 1.2 GB. Free memory is still 957.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 09:33:29,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.25 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 139.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 718.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 957.0 MB in the end (delta: 143.9 MB). Peak memory consumption was 143.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.15 ms. Allocated memory is still 1.2 GB. Free memory is still 957.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 14 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, 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: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...