/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:46:12,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:46:13,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:46:13,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:46:13,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:46:13,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:46:13,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:46:13,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:46:13,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:46:13,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:46:13,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:46:13,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:46:13,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:46:13,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:46:13,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:46:13,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:46:13,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:46:13,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:46:13,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:46:13,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:46:13,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:46:13,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:46:13,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:46:13,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:46:13,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:46:13,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:46:13,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:46:13,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:46:13,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:46:13,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:46:13,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:46:13,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:46:13,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:46:13,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:46:13,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:46:13,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:46:13,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:46:13,062 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:46:13,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:46:13,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:46:13,063 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:46:13,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:46:13,063 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:46:13,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:46:13,064 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:46:13,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:46:13,064 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:46:13,064 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:46:13,065 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:46:13,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:46:13,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:46:13,065 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:46:13,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:46:13,066 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:46:13,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:46:13,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:46:13,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:46:13,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:46:13,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:46:13,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:46:13,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:46:13,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:46:13,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:46:13,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:46:13,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:46:13,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:46:13,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:46:13,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:46:13,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:46:13,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:46:13,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:46:13,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:46:13,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:46:13,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:46:13,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:46:13,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:46:13,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:46:13,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:46:13,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:46:13,421 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:46:13,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-24 05:46:13,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5465c5c19/b1cae8454fec4d62ae85f16513cfe915/FLAG79857750a [2019-11-24 05:46:14,032 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:46:14,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-24 05:46:14,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5465c5c19/b1cae8454fec4d62ae85f16513cfe915/FLAG79857750a [2019-11-24 05:46:14,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5465c5c19/b1cae8454fec4d62ae85f16513cfe915 [2019-11-24 05:46:14,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:46:14,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:46:14,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:46:14,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:46:14,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:46:14,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:46:14" (1/1) ... [2019-11-24 05:46:14,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338eb183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:14, skipping insertion in model container [2019-11-24 05:46:14,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:46:14" (1/1) ... [2019-11-24 05:46:14,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:46:14,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:46:15,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:46:15,062 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:46:15,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:46:15,553 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:46:15,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15 WrapperNode [2019-11-24 05:46:15,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:46:15,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:46:15,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:46:15,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:46:15,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:46:15,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:46:15,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:46:15,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:46:15,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... [2019-11-24 05:46:15,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:46:15,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:46:15,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:46:15,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:46:15,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:46:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:46:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:46:18,393 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:46:18,393 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 05:46:18,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:46:18 BoogieIcfgContainer [2019-11-24 05:46:18,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:46:18,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:46:18,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:46:18,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:46:18,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:46:14" (1/3) ... [2019-11-24 05:46:18,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fb6806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:46:18, skipping insertion in model container [2019-11-24 05:46:18,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:46:15" (2/3) ... [2019-11-24 05:46:18,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fb6806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:46:18, skipping insertion in model container [2019-11-24 05:46:18,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:46:18" (3/3) ... [2019-11-24 05:46:18,405 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-24 05:46:18,416 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:46:18,426 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 05:46:18,440 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 05:46:18,479 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:46:18,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:46:18,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:46:18,480 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:46:18,480 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:46:18,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:46:18,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:46:18,481 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:46:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states. [2019-11-24 05:46:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-24 05:46:18,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:18,533 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:18,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:18,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1240864962, now seen corresponding path program 1 times [2019-11-24 05:46:18,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:18,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063561913] [2019-11-24 05:46:18,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:19,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063561913] [2019-11-24 05:46:19,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:19,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:19,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713407684] [2019-11-24 05:46:19,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:19,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:19,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:19,428 INFO L87 Difference]: Start difference. First operand 280 states. Second operand 5 states. [2019-11-24 05:46:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:19,647 INFO L93 Difference]: Finished difference Result 743 states and 1308 transitions. [2019-11-24 05:46:19,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:19,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-11-24 05:46:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:19,671 INFO L225 Difference]: With dead ends: 743 [2019-11-24 05:46:19,671 INFO L226 Difference]: Without dead ends: 511 [2019-11-24 05:46:19,676 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-11-24 05:46:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 489. [2019-11-24 05:46:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-11-24 05:46:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 627 transitions. [2019-11-24 05:46:19,793 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 627 transitions. Word has length 113 [2019-11-24 05:46:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:19,794 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 627 transitions. [2019-11-24 05:46:19,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 627 transitions. [2019-11-24 05:46:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-24 05:46:19,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:19,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:19,798 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1030715149, now seen corresponding path program 1 times [2019-11-24 05:46:19,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:19,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925173292] [2019-11-24 05:46:19,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:20,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925173292] [2019-11-24 05:46:20,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:20,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:46:20,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812695059] [2019-11-24 05:46:20,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:46:20,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:20,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:46:20,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:46:20,375 INFO L87 Difference]: Start difference. First operand 489 states and 627 transitions. Second operand 7 states. [2019-11-24 05:46:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:20,899 INFO L93 Difference]: Finished difference Result 1484 states and 1913 transitions. [2019-11-24 05:46:20,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:46:20,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-11-24 05:46:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:20,907 INFO L225 Difference]: With dead ends: 1484 [2019-11-24 05:46:20,907 INFO L226 Difference]: Without dead ends: 1147 [2019-11-24 05:46:20,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:46:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2019-11-24 05:46:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1052. [2019-11-24 05:46:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2019-11-24 05:46:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1356 transitions. [2019-11-24 05:46:20,989 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1356 transitions. Word has length 116 [2019-11-24 05:46:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:20,990 INFO L462 AbstractCegarLoop]: Abstraction has 1052 states and 1356 transitions. [2019-11-24 05:46:20,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:46:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1356 transitions. [2019-11-24 05:46:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-24 05:46:20,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:20,994 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:20,995 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1201717115, now seen corresponding path program 1 times [2019-11-24 05:46:20,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:20,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474862149] [2019-11-24 05:46:20,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:21,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474862149] [2019-11-24 05:46:21,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:21,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:21,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696566315] [2019-11-24 05:46:21,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:21,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:21,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:21,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:21,154 INFO L87 Difference]: Start difference. First operand 1052 states and 1356 transitions. Second operand 5 states. [2019-11-24 05:46:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:21,389 INFO L93 Difference]: Finished difference Result 2040 states and 2630 transitions. [2019-11-24 05:46:21,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:21,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-11-24 05:46:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:21,400 INFO L225 Difference]: With dead ends: 2040 [2019-11-24 05:46:21,400 INFO L226 Difference]: Without dead ends: 1052 [2019-11-24 05:46:21,402 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:46:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-11-24 05:46:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2019-11-24 05:46:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2019-11-24 05:46:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1333 transitions. [2019-11-24 05:46:21,484 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1333 transitions. Word has length 119 [2019-11-24 05:46:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:21,484 INFO L462 AbstractCegarLoop]: Abstraction has 1052 states and 1333 transitions. [2019-11-24 05:46:21,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1333 transitions. [2019-11-24 05:46:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-24 05:46:21,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:21,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:21,489 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1480565888, now seen corresponding path program 1 times [2019-11-24 05:46:21,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:21,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011231477] [2019-11-24 05:46:21,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:21,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011231477] [2019-11-24 05:46:21,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:21,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:21,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379645201] [2019-11-24 05:46:21,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:21,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:21,889 INFO L87 Difference]: Start difference. First operand 1052 states and 1333 transitions. Second operand 5 states. [2019-11-24 05:46:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:22,042 INFO L93 Difference]: Finished difference Result 1963 states and 2553 transitions. [2019-11-24 05:46:22,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:22,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-11-24 05:46:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:22,050 INFO L225 Difference]: With dead ends: 1963 [2019-11-24 05:46:22,050 INFO L226 Difference]: Without dead ends: 1310 [2019-11-24 05:46:22,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2019-11-24 05:46:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1078. [2019-11-24 05:46:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2019-11-24 05:46:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1366 transitions. [2019-11-24 05:46:22,130 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1366 transitions. Word has length 119 [2019-11-24 05:46:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:22,132 INFO L462 AbstractCegarLoop]: Abstraction has 1078 states and 1366 transitions. [2019-11-24 05:46:22,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1366 transitions. [2019-11-24 05:46:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-24 05:46:22,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:22,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:22,136 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:22,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1506664428, now seen corresponding path program 1 times [2019-11-24 05:46:22,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:22,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806854846] [2019-11-24 05:46:22,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:22,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806854846] [2019-11-24 05:46:22,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:22,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:22,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23561143] [2019-11-24 05:46:22,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:22,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:22,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:22,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:22,444 INFO L87 Difference]: Start difference. First operand 1078 states and 1366 transitions. Second operand 5 states. [2019-11-24 05:46:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:22,658 INFO L93 Difference]: Finished difference Result 2958 states and 3737 transitions. [2019-11-24 05:46:22,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:22,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-11-24 05:46:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:22,668 INFO L225 Difference]: With dead ends: 2958 [2019-11-24 05:46:22,669 INFO L226 Difference]: Without dead ends: 2018 [2019-11-24 05:46:22,671 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2019-11-24 05:46:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1996. [2019-11-24 05:46:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2019-11-24 05:46:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2514 transitions. [2019-11-24 05:46:22,810 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2514 transitions. Word has length 119 [2019-11-24 05:46:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:22,810 INFO L462 AbstractCegarLoop]: Abstraction has 1996 states and 2514 transitions. [2019-11-24 05:46:22,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2514 transitions. [2019-11-24 05:46:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-24 05:46:22,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:22,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:22,815 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1497750271, now seen corresponding path program 1 times [2019-11-24 05:46:22,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:22,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128722498] [2019-11-24 05:46:22,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:22,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128722498] [2019-11-24 05:46:22,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:22,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:46:22,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805123409] [2019-11-24 05:46:22,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:46:22,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:46:22,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:46:22,903 INFO L87 Difference]: Start difference. First operand 1996 states and 2514 transitions. Second operand 3 states. [2019-11-24 05:46:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:23,130 INFO L93 Difference]: Finished difference Result 3638 states and 4619 transitions. [2019-11-24 05:46:23,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:46:23,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-11-24 05:46:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:23,146 INFO L225 Difference]: With dead ends: 3638 [2019-11-24 05:46:23,146 INFO L226 Difference]: Without dead ends: 2916 [2019-11-24 05:46:23,148 INFO L630 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 [2019-11-24 05:46:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2019-11-24 05:46:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2894. [2019-11-24 05:46:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2019-11-24 05:46:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3636 transitions. [2019-11-24 05:46:23,354 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3636 transitions. Word has length 125 [2019-11-24 05:46:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:23,355 INFO L462 AbstractCegarLoop]: Abstraction has 2894 states and 3636 transitions. [2019-11-24 05:46:23,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:46:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3636 transitions. [2019-11-24 05:46:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-24 05:46:23,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:23,361 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:23,364 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:23,365 INFO L82 PathProgramCache]: Analyzing trace with hash -342079634, now seen corresponding path program 1 times [2019-11-24 05:46:23,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:23,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630587657] [2019-11-24 05:46:23,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:23,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630587657] [2019-11-24 05:46:23,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:23,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:23,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167608997] [2019-11-24 05:46:23,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:23,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:23,694 INFO L87 Difference]: Start difference. First operand 2894 states and 3636 transitions. Second operand 5 states. [2019-11-24 05:46:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:23,967 INFO L93 Difference]: Finished difference Result 4055 states and 5193 transitions. [2019-11-24 05:46:23,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:23,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-11-24 05:46:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:23,980 INFO L225 Difference]: With dead ends: 4055 [2019-11-24 05:46:23,980 INFO L226 Difference]: Without dead ends: 2611 [2019-11-24 05:46:23,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2019-11-24 05:46:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2384. [2019-11-24 05:46:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2019-11-24 05:46:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 2995 transitions. [2019-11-24 05:46:24,145 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 2995 transitions. Word has length 125 [2019-11-24 05:46:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:24,145 INFO L462 AbstractCegarLoop]: Abstraction has 2384 states and 2995 transitions. [2019-11-24 05:46:24,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 2995 transitions. [2019-11-24 05:46:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-24 05:46:24,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:24,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:24,149 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:24,150 INFO L82 PathProgramCache]: Analyzing trace with hash 154913270, now seen corresponding path program 1 times [2019-11-24 05:46:24,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:24,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589132107] [2019-11-24 05:46:24,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:24,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589132107] [2019-11-24 05:46:24,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:24,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:24,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324677334] [2019-11-24 05:46:24,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:24,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:24,242 INFO L87 Difference]: Start difference. First operand 2384 states and 2995 transitions. Second operand 5 states. [2019-11-24 05:46:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:24,627 INFO L93 Difference]: Finished difference Result 4584 states and 5748 transitions. [2019-11-24 05:46:24,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:24,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-11-24 05:46:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:24,637 INFO L225 Difference]: With dead ends: 4584 [2019-11-24 05:46:24,638 INFO L226 Difference]: Without dead ends: 2384 [2019-11-24 05:46:24,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:46:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2019-11-24 05:46:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2384. [2019-11-24 05:46:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2019-11-24 05:46:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 2947 transitions. [2019-11-24 05:46:24,810 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 2947 transitions. Word has length 125 [2019-11-24 05:46:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:24,810 INFO L462 AbstractCegarLoop]: Abstraction has 2384 states and 2947 transitions. [2019-11-24 05:46:24,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 2947 transitions. [2019-11-24 05:46:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-24 05:46:24,816 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:24,816 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:24,817 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash 481840332, now seen corresponding path program 1 times [2019-11-24 05:46:24,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:24,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429928096] [2019-11-24 05:46:24,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:25,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429928096] [2019-11-24 05:46:25,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:25,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:46:25,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953115693] [2019-11-24 05:46:25,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:46:25,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:25,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:46:25,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:25,210 INFO L87 Difference]: Start difference. First operand 2384 states and 2947 transitions. Second operand 5 states. [2019-11-24 05:46:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:46:25,502 INFO L93 Difference]: Finished difference Result 4051 states and 5148 transitions. [2019-11-24 05:46:25,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:46:25,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-11-24 05:46:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:46:25,515 INFO L225 Difference]: With dead ends: 4051 [2019-11-24 05:46:25,515 INFO L226 Difference]: Without dead ends: 2734 [2019-11-24 05:46:25,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:46:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2019-11-24 05:46:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2582. [2019-11-24 05:46:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2019-11-24 05:46:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3178 transitions. [2019-11-24 05:46:25,748 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3178 transitions. Word has length 125 [2019-11-24 05:46:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:46:25,748 INFO L462 AbstractCegarLoop]: Abstraction has 2582 states and 3178 transitions. [2019-11-24 05:46:25,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:46:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3178 transitions. [2019-11-24 05:46:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-24 05:46:25,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:46:25,755 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:46:25,755 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:46:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:46:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash -704203705, now seen corresponding path program 1 times [2019-11-24 05:46:25,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:46:25,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600385999] [2019-11-24 05:46:25,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:46:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:46:27,922 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-11-24 05:46:28,117 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-11-24 05:46:28,483 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2019-11-24 05:46:28,742 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2019-11-24 05:46:29,122 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2019-11-24 05:46:29,355 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-24 05:46:29,605 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-24 05:46:29,821 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-11-24 05:46:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:46:30,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600385999] [2019-11-24 05:46:30,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:46:30,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2019-11-24 05:46:30,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780678687] [2019-11-24 05:46:30,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-24 05:46:30,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:46:30,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-24 05:46:30,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2019-11-24 05:46:30,596 INFO L87 Difference]: Start difference. First operand 2582 states and 3178 transitions. Second operand 30 states. [2019-11-24 05:46:30,891 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-11-24 05:46:31,080 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-11-24 05:46:31,300 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-11-24 05:46:31,549 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-11-24 05:46:31,797 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-11-24 05:46:32,047 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-11-24 05:46:32,566 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2019-11-24 05:46:33,009 WARN L192 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2019-11-24 05:46:33,927 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-11-24 05:46:34,421 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-11-24 05:46:34,802 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-11-24 05:46:35,412 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2019-11-24 05:46:35,954 WARN L192 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2019-11-24 05:46:36,261 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-11-24 05:46:36,718 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 64 [2019-11-24 05:46:36,950 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-11-24 05:46:37,347 WARN L192 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 79 [2019-11-24 05:46:37,620 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-11-24 05:46:37,900 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-11-24 05:46:38,337 WARN L192 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-11-24 05:46:38,710 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 60 [2019-11-24 05:46:39,132 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-11-24 05:46:39,737 WARN L192 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2019-11-24 05:46:40,215 WARN L192 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-11-24 05:46:41,210 WARN L192 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 109 [2019-11-24 05:46:42,009 WARN L192 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 114 [2019-11-24 05:46:42,382 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2019-11-24 05:46:42,850 WARN L192 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2019-11-24 05:46:43,442 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 69 [2019-11-24 05:46:43,895 WARN L192 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2019-11-24 05:46:44,185 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-11-24 05:46:44,706 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2019-11-24 05:46:45,179 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2019-11-24 05:46:45,553 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 62 [2019-11-24 05:46:45,855 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-11-24 05:46:46,284 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 84 [2019-11-24 05:46:46,626 WARN L192 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-11-24 05:46:47,197 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 63 [2019-11-24 05:46:47,632 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 78 [2019-11-24 05:46:47,886 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-11-24 05:46:48,092 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-11-24 05:46:48,499 WARN L192 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-11-24 05:46:48,849 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2019-11-24 05:46:49,247 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 85 [2019-11-24 05:46:49,593 WARN L192 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 79 [2019-11-24 05:46:50,179 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-11-24 05:46:50,550 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-11-24 05:46:50,787 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2019-11-24 05:46:51,287 WARN L192 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 55 [2019-11-24 05:46:51,588 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-11-24 05:46:52,050 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 58 [2019-11-24 05:46:52,689 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-11-24 05:46:53,694 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-24 05:46:54,390 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2019-11-24 05:46:56,614 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2019-11-24 05:46:56,825 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-11-24 05:46:57,123 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 53 [2019-11-24 05:46:58,247 WARN L192 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2019-11-24 05:46:59,209 WARN L192 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 83 [2019-11-24 05:47:00,122 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 60 [2019-11-24 05:47:01,122 WARN L192 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 104 [2019-11-24 05:47:01,507 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 53 [2019-11-24 05:47:03,729 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-11-24 05:47:04,376 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-11-24 05:47:05,871 WARN L192 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 93 [2019-11-24 05:47:06,155 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-11-24 05:47:06,671 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-11-24 05:47:07,010 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 64 [2019-11-24 05:47:07,188 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-11-24 05:47:07,629 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-11-24 05:47:08,026 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2019-11-24 05:47:08,430 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2019-11-24 05:47:09,184 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-11-24 05:47:09,524 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-11-24 05:47:10,048 WARN L192 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2019-11-24 05:47:10,857 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-11-24 05:47:11,475 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-11-24 05:47:11,795 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2019-11-24 05:47:12,627 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-11-24 05:47:13,069 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-11-24 05:47:13,479 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-11-24 05:47:13,893 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-11-24 05:47:14,161 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-11-24 05:47:15,019 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-11-24 05:47:15,330 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-11-24 05:47:15,723 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-11-24 05:47:16,164 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2019-11-24 05:47:16,546 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-11-24 05:47:16,865 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-11-24 05:47:17,182 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-11-24 05:47:17,588 WARN L192 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2019-11-24 05:47:17,844 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-11-24 05:47:18,144 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-11-24 05:47:18,437 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-11-24 05:47:18,744 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-11-24 05:47:19,063 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-11-24 05:47:19,329 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-11-24 05:47:19,650 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-11-24 05:47:19,936 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-11-24 05:47:20,330 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2019-11-24 05:47:20,798 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 77 [2019-11-24 05:47:21,042 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-11-24 05:47:21,562 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-11-24 05:47:21,876 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-11-24 05:47:22,342 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2019-11-24 05:47:22,664 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-11-24 05:47:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:47:22,859 INFO L93 Difference]: Finished difference Result 17036 states and 24915 transitions. [2019-11-24 05:47:22,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-11-24 05:47:22,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 128 [2019-11-24 05:47:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:47:22,925 INFO L225 Difference]: With dead ends: 17036 [2019-11-24 05:47:22,926 INFO L226 Difference]: Without dead ends: 16087 [2019-11-24 05:47:22,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6273 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=3117, Invalid=15243, Unknown=0, NotChecked=0, Total=18360 [2019-11-24 05:47:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16087 states. [2019-11-24 05:47:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16087 to 8225. [2019-11-24 05:47:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8225 states. [2019-11-24 05:47:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 11857 transitions. [2019-11-24 05:47:24,036 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 11857 transitions. Word has length 128 [2019-11-24 05:47:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:47:24,037 INFO L462 AbstractCegarLoop]: Abstraction has 8225 states and 11857 transitions. [2019-11-24 05:47:24,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-24 05:47:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 11857 transitions. [2019-11-24 05:47:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-24 05:47:24,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:47:24,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:47:24,042 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:47:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:47:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash -704634681, now seen corresponding path program 1 times [2019-11-24 05:47:24,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:47:24,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528693668] [2019-11-24 05:47:24,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:47:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:47:25,051 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-11-24 05:47:25,236 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-11-24 05:47:25,422 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-11-24 05:47:25,588 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-11-24 05:47:25,773 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-11-24 05:47:25,944 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-11-24 05:47:26,101 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-11-24 05:47:26,308 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-11-24 05:47:26,490 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-11-24 05:47:26,673 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-11-24 05:47:26,893 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-11-24 05:47:27,085 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-11-24 05:47:27,311 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2019-11-24 05:47:27,527 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-11-24 05:47:27,724 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-11-24 05:47:27,905 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-11-24 05:47:28,083 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-11-24 05:47:28,278 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-11-24 05:47:28,617 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2019-11-24 05:47:28,837 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-11-24 05:47:29,054 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-11-24 05:47:29,236 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-11-24 05:47:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:47:29,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528693668] [2019-11-24 05:47:29,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:47:29,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2019-11-24 05:47:29,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760522979] [2019-11-24 05:47:29,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-24 05:47:29,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:47:29,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-24 05:47:29,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-11-24 05:47:29,975 INFO L87 Difference]: Start difference. First operand 8225 states and 11857 transitions. Second operand 34 states. [2019-11-24 05:47:30,423 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-11-24 05:47:30,831 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-11-24 05:47:31,341 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-11-24 05:47:31,908 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 86 [2019-11-24 05:47:32,520 WARN L192 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 87 [2019-11-24 05:47:33,345 WARN L192 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 99 [2019-11-24 05:47:34,088 WARN L192 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2019-11-24 05:47:34,760 WARN L192 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2019-11-24 05:47:35,786 WARN L192 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 122 [2019-11-24 05:47:36,708 WARN L192 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 97 [2019-11-24 05:47:37,596 WARN L192 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 109 [2019-11-24 05:47:38,538 WARN L192 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 121 [2019-11-24 05:47:39,510 WARN L192 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 114 [2019-11-24 05:47:40,350 WARN L192 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 122 [2019-11-24 05:47:41,333 WARN L192 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 121 [2019-11-24 05:47:42,159 WARN L192 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 107 [2019-11-24 05:47:42,515 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-11-24 05:47:42,927 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-11-24 05:47:43,248 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74