/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:41:18,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:41:18,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:41:18,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:41:18,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:41:18,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:41:18,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:41:18,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:41:18,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:41:18,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:41:18,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:41:18,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:41:18,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:41:18,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:41:18,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:41:18,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:41:18,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:41:18,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:41:18,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:41:18,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:41:18,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:41:18,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:41:18,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:41:18,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:41:18,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:41:18,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:41:18,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:41:18,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:41:18,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:41:18,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:41:18,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:41:18,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:41:18,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:41:18,450 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:41:18,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:41:18,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:41:18,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:41:18,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:41:18,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:41:18,452 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:41:18,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:41:18,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:41:18,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:41:18,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:41:18,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:41:18,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:41:18,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:41:18,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:41:18,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:41:18,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:41:18,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:41:18,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:41:18,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:41:18,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:41:18,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:41:18,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:41:18,762 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:41:18,763 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:41:18,764 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-07 04:41:18,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a994361/2261675f472340c8804db5c654ade2c1/FLAGba979284a [2019-11-07 04:41:19,472 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:41:19,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-07 04:41:19,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a994361/2261675f472340c8804db5c654ade2c1/FLAGba979284a [2019-11-07 04:41:19,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a994361/2261675f472340c8804db5c654ade2c1 [2019-11-07 04:41:19,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:41:19,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:41:19,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:41:19,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:41:19,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:41:19,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:41:19" (1/1) ... [2019-11-07 04:41:19,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bb15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:19, skipping insertion in model container [2019-11-07 04:41:19,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:41:19" (1/1) ... [2019-11-07 04:41:19,730 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:41:19,801 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:41:20,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:41:20,472 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:41:20,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:41:20,922 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:41:20,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20 WrapperNode [2019-11-07 04:41:20,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:41:20,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:41:20,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:41:20,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:41:20,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:20,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:20,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:20,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:20,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:21,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:21,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (1/1) ... [2019-11-07 04:41:21,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:41:21,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:41:21,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:41:21,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:41:21,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (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 [2019-11-07 04:41:21,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:41:21,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:41:21,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:41:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:41:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:41:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-07 04:41:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 04:41:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 04:41:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:41:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 04:41:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 04:41:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 04:41:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 04:41:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 04:41:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 04:41:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 04:41:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:41:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:41:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:41:23,934 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:41:23,934 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:41:23,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:41:23 BoogieIcfgContainer [2019-11-07 04:41:23,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:41:23,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:41:23,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:41:23,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:41:23,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:41:19" (1/3) ... [2019-11-07 04:41:23,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1281581f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:41:23, skipping insertion in model container [2019-11-07 04:41:23,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:20" (2/3) ... [2019-11-07 04:41:23,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1281581f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:41:23, skipping insertion in model container [2019-11-07 04:41:23,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:41:23" (3/3) ... [2019-11-07 04:41:23,944 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-07 04:41:23,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:41:23,963 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-07 04:41:23,974 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-07 04:41:24,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:41:24,003 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:41:24,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:41:24,004 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:41:24,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:41:24,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:41:24,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:41:24,004 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:41:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2019-11-07 04:41:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:41:24,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:24,047 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] [2019-11-07 04:41:24,049 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:24,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1098759110, now seen corresponding path program 1 times [2019-11-07 04:41:24,065 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:24,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978282554] [2019-11-07 04:41:24,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:25,204 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978282554] [2019-11-07 04:41:25,205 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:25,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:25,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545205072] [2019-11-07 04:41:25,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:25,215 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:25,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:25,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:25,232 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 5 states. [2019-11-07 04:41:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:25,527 INFO L93 Difference]: Finished difference Result 772 states and 1346 transitions. [2019-11-07 04:41:25,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:25,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-11-07 04:41:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:25,560 INFO L225 Difference]: With dead ends: 772 [2019-11-07 04:41:25,561 INFO L226 Difference]: Without dead ends: 534 [2019-11-07 04:41:25,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-11-07 04:41:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 512. [2019-11-07 04:41:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-11-07 04:41:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 662 transitions. [2019-11-07 04:41:25,717 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 662 transitions. Word has length 120 [2019-11-07 04:41:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:25,717 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 662 transitions. [2019-11-07 04:41:25,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 662 transitions. [2019-11-07 04:41:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:41:25,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:25,731 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] [2019-11-07 04:41:25,731 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1350043954, now seen corresponding path program 1 times [2019-11-07 04:41:25,732 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:25,732 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286678913] [2019-11-07 04:41:25,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:25,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286678913] [2019-11-07 04:41:25,996 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:25,996 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:41:25,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607927129] [2019-11-07 04:41:25,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:41:25,999 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:41:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:41:26,000 INFO L87 Difference]: Start difference. First operand 512 states and 662 transitions. Second operand 3 states. [2019-11-07 04:41:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:26,084 INFO L93 Difference]: Finished difference Result 913 states and 1176 transitions. [2019-11-07 04:41:26,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:41:26,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-11-07 04:41:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:26,090 INFO L225 Difference]: With dead ends: 913 [2019-11-07 04:41:26,090 INFO L226 Difference]: Without dead ends: 730 [2019-11-07 04:41:26,096 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 [2019-11-07 04:41:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2019-11-07 04:41:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 708. [2019-11-07 04:41:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-11-07 04:41:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 915 transitions. [2019-11-07 04:41:26,131 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 915 transitions. Word has length 126 [2019-11-07 04:41:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:26,134 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 915 transitions. [2019-11-07 04:41:26,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:41:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 915 transitions. [2019-11-07 04:41:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:41:26,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:26,142 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] [2019-11-07 04:41:26,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:26,145 INFO L82 PathProgramCache]: Analyzing trace with hash -376969821, now seen corresponding path program 1 times [2019-11-07 04:41:26,146 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:26,147 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789652790] [2019-11-07 04:41:26,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:26,315 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789652790] [2019-11-07 04:41:26,315 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:26,315 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:26,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476837278] [2019-11-07 04:41:26,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:26,322 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:26,323 INFO L87 Difference]: Start difference. First operand 708 states and 915 transitions. Second operand 5 states. [2019-11-07 04:41:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:26,589 INFO L93 Difference]: Finished difference Result 1375 states and 1783 transitions. [2019-11-07 04:41:26,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:26,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-11-07 04:41:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:26,594 INFO L225 Difference]: With dead ends: 1375 [2019-11-07 04:41:26,600 INFO L226 Difference]: Without dead ends: 708 [2019-11-07 04:41:26,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:41:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-07 04:41:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2019-11-07 04:41:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-11-07 04:41:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 902 transitions. [2019-11-07 04:41:26,636 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 902 transitions. Word has length 126 [2019-11-07 04:41:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:26,638 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 902 transitions. [2019-11-07 04:41:26,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 902 transitions. [2019-11-07 04:41:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:41:26,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:26,641 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] [2019-11-07 04:41:26,642 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:26,642 INFO L82 PathProgramCache]: Analyzing trace with hash -222874296, now seen corresponding path program 1 times [2019-11-07 04:41:26,643 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:26,643 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960297638] [2019-11-07 04:41:26,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:27,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960297638] [2019-11-07 04:41:27,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:27,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:27,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355745767] [2019-11-07 04:41:27,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:27,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:27,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:27,125 INFO L87 Difference]: Start difference. First operand 708 states and 902 transitions. Second operand 5 states. [2019-11-07 04:41:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:27,336 INFO L93 Difference]: Finished difference Result 1966 states and 2508 transitions. [2019-11-07 04:41:27,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:27,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-11-07 04:41:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:27,344 INFO L225 Difference]: With dead ends: 1966 [2019-11-07 04:41:27,344 INFO L226 Difference]: Without dead ends: 1334 [2019-11-07 04:41:27,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:41:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2019-11-07 04:41:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1312. [2019-11-07 04:41:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-11-07 04:41:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1674 transitions. [2019-11-07 04:41:27,431 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1674 transitions. Word has length 126 [2019-11-07 04:41:27,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:27,432 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1674 transitions. [2019-11-07 04:41:27,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1674 transitions. [2019-11-07 04:41:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:41:27,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:27,435 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, 1, 1, 1, 1] [2019-11-07 04:41:27,436 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:27,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash -567122856, now seen corresponding path program 1 times [2019-11-07 04:41:27,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:27,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822031256] [2019-11-07 04:41:27,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:27,570 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822031256] [2019-11-07 04:41:27,570 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:27,570 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:27,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346736835] [2019-11-07 04:41:27,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:27,571 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:27,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:27,572 INFO L87 Difference]: Start difference. First operand 1312 states and 1674 transitions. Second operand 5 states. [2019-11-07 04:41:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:27,926 INFO L93 Difference]: Finished difference Result 2550 states and 3256 transitions. [2019-11-07 04:41:27,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:27,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-11-07 04:41:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:27,933 INFO L225 Difference]: With dead ends: 2550 [2019-11-07 04:41:27,933 INFO L226 Difference]: Without dead ends: 1312 [2019-11-07 04:41:27,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:41:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2019-11-07 04:41:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2019-11-07 04:41:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-11-07 04:41:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1650 transitions. [2019-11-07 04:41:28,016 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1650 transitions. Word has length 132 [2019-11-07 04:41:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:28,016 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1650 transitions. [2019-11-07 04:41:28,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1650 transitions. [2019-11-07 04:41:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:41:28,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:28,020 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, 1, 1, 1, 1] [2019-11-07 04:41:28,020 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1860087442, now seen corresponding path program 1 times [2019-11-07 04:41:28,021 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:28,021 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104124606] [2019-11-07 04:41:28,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:28,514 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104124606] [2019-11-07 04:41:28,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:28,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:41:28,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885827834] [2019-11-07 04:41:28,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:41:28,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:28,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:41:28,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:41:28,516 INFO L87 Difference]: Start difference. First operand 1312 states and 1650 transitions. Second operand 7 states. [2019-11-07 04:41:28,937 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 17 [2019-11-07 04:41:29,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:29,345 INFO L93 Difference]: Finished difference Result 4581 states and 5763 transitions. [2019-11-07 04:41:29,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:41:29,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-11-07 04:41:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:29,362 INFO L225 Difference]: With dead ends: 4581 [2019-11-07 04:41:29,362 INFO L226 Difference]: Without dead ends: 3584 [2019-11-07 04:41:29,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:41:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2019-11-07 04:41:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3540. [2019-11-07 04:41:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2019-11-07 04:41:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4440 transitions. [2019-11-07 04:41:29,694 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4440 transitions. Word has length 132 [2019-11-07 04:41:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:29,696 INFO L462 AbstractCegarLoop]: Abstraction has 3540 states and 4440 transitions. [2019-11-07 04:41:29,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:41:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4440 transitions. [2019-11-07 04:41:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:41:29,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:29,704 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, 1, 1, 1, 1] [2019-11-07 04:41:29,704 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash -713128606, now seen corresponding path program 1 times [2019-11-07 04:41:29,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:29,709 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097718945] [2019-11-07 04:41:29,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:30,097 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097718945] [2019-11-07 04:41:30,097 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:30,097 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:30,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869175849] [2019-11-07 04:41:30,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:30,098 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:30,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:30,099 INFO L87 Difference]: Start difference. First operand 3540 states and 4440 transitions. Second operand 5 states. [2019-11-07 04:41:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:30,379 INFO L93 Difference]: Finished difference Result 5237 states and 6643 transitions. [2019-11-07 04:41:30,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:30,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-11-07 04:41:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:30,394 INFO L225 Difference]: With dead ends: 5237 [2019-11-07 04:41:30,394 INFO L226 Difference]: Without dead ends: 2494 [2019-11-07 04:41:30,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2019-11-07 04:41:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2456. [2019-11-07 04:41:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-11-07 04:41:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3074 transitions. [2019-11-07 04:41:30,640 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3074 transitions. Word has length 132 [2019-11-07 04:41:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:30,641 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3074 transitions. [2019-11-07 04:41:30,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3074 transitions. [2019-11-07 04:41:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 04:41:30,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:30,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:41:30,648 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash -930495931, now seen corresponding path program 1 times [2019-11-07 04:41:30,649 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:30,649 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056725244] [2019-11-07 04:41:30,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:30,842 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056725244] [2019-11-07 04:41:30,842 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:30,842 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:41:30,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460230614] [2019-11-07 04:41:30,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:41:30,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:41:30,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:41:30,844 INFO L87 Difference]: Start difference. First operand 2456 states and 3074 transitions. Second operand 5 states. [2019-11-07 04:41:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:31,210 INFO L93 Difference]: Finished difference Result 4394 states and 5496 transitions. [2019-11-07 04:41:31,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:41:31,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-11-07 04:41:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:31,221 INFO L225 Difference]: With dead ends: 4394 [2019-11-07 04:41:31,222 INFO L226 Difference]: Without dead ends: 2456 [2019-11-07 04:41:31,226 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:41:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2019-11-07 04:41:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2019-11-07 04:41:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-11-07 04:41:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3034 transitions. [2019-11-07 04:41:31,473 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3034 transitions. Word has length 138 [2019-11-07 04:41:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:41:31,474 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3034 transitions. [2019-11-07 04:41:31,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:41:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3034 transitions. [2019-11-07 04:41:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 04:41:31,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:41:31,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:41:31,483 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:41:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:41:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1668421802, now seen corresponding path program 1 times [2019-11-07 04:41:31,484 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:41:31,485 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447593589] [2019-11-07 04:41:31,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:41:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:41:33,323 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-11-07 04:41:33,470 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-11-07 04:41:33,605 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-11-07 04:41:33,747 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-11-07 04:41:33,896 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-11-07 04:41:34,062 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-11-07 04:41:34,210 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-11-07 04:41:34,546 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-11-07 04:41:34,735 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-11-07 04:41:34,976 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-11-07 04:41:35,183 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-11-07 04:41:35,356 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2019-11-07 04:41:35,552 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-11-07 04:41:35,768 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2019-11-07 04:41:36,377 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2019-11-07 04:41:36,562 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-11-07 04:41:36,759 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-11-07 04:41:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:41:37,492 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447593589] [2019-11-07 04:41:37,492 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:41:37,492 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2019-11-07 04:41:37,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030712589] [2019-11-07 04:41:37,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-07 04:41:37,493 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:41:37,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-07 04:41:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 04:41:37,495 INFO L87 Difference]: Start difference. First operand 2456 states and 3034 transitions. Second operand 34 states. [2019-11-07 04:41:37,822 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-11-07 04:41:38,321 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-11-07 04:41:38,647 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-11-07 04:41:39,034 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2019-11-07 04:41:39,608 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-11-07 04:41:40,204 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-11-07 04:41:40,630 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-11-07 04:41:41,043 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-11-07 04:41:41,707 WARN L191 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-11-07 04:41:42,259 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-11-07 04:41:42,831 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-11-07 04:41:43,424 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2019-11-07 04:41:43,881 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-11-07 04:41:44,631 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-11-07 04:41:46,127 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-11-07 04:41:46,548 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-11-07 04:41:47,075 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-11-07 04:41:47,352 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-11-07 04:41:47,622 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2019-11-07 04:41:47,857 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-11-07 04:41:48,103 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-11-07 04:41:48,362 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-11-07 04:41:49,666 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-11-07 04:41:50,019 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-11-07 04:41:52,264 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-11-07 04:41:52,718 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 69 [2019-11-07 04:41:53,312 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2019-11-07 04:41:53,606 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-11-07 04:41:55,046 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2019-11-07 04:41:56,514 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-11-07 04:41:56,836 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-11-07 04:41:57,254 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-11-07 04:41:57,479 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-11-07 04:41:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:41:57,939 INFO L93 Difference]: Finished difference Result 8484 states and 11996 transitions. [2019-11-07 04:41:57,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-11-07 04:41:57,940 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 138 [2019-11-07 04:41:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:41:57,978 INFO L225 Difference]: With dead ends: 8484 [2019-11-07 04:41:57,978 INFO L226 Difference]: Without dead ends: 7984 [2019-11-07 04:41:57,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=737, Invalid=4519, Unknown=0, NotChecked=0, Total=5256 [2019-11-07 04:41:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7984 states.