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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:26:57,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:26:57,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:26:57,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:26:57,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:26:57,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:26:57,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:26:57,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:26:57,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:26:57,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:26:57,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:26:57,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:26:57,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:26:57,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:26:57,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:26:57,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:26:57,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:26:57,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:26:57,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:26:57,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:26:57,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:26:57,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:26:57,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:26:57,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:26:57,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:26:57,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:26:57,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:26:57,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:26:57,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:26:57,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:26:57,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:26:57,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:26:57,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:26:57,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:26:57,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:26:57,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:26:57,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:26:57,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:26:57,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:26:57,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:26:57,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:26:57,110 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 [2019-10-15 03:26:57,124 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:26:57,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:26:57,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:26:57,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:26:57,126 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:26:57,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:26:57,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:26:57,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:26:57,128 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:26:57,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:26:57,128 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:26:57,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:26:57,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:26:57,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:26:57,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:26:57,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:26:57,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:26:57,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:26:57,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:26:57,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:26:57,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:26:57,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:26:57,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:26:57,131 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 [2019-10-15 03:26:57,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:26:57,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:26:57,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:26:57,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:26:57,458 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:26:57,459 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-15 03:26:57,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687802e34/7a491547f99a45ceb874987240fa6f11/FLAGe400ce5bf [2019-10-15 03:26:58,169 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:26:58,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-15 03:26:58,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687802e34/7a491547f99a45ceb874987240fa6f11/FLAGe400ce5bf [2019-10-15 03:26:58,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687802e34/7a491547f99a45ceb874987240fa6f11 [2019-10-15 03:26:58,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:26:58,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:26:58,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:26:58,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:26:58,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:26:58,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:26:58" (1/1) ... [2019-10-15 03:26:58,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d65b5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:58, skipping insertion in model container [2019-10-15 03:26:58,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:26:58" (1/1) ... [2019-10-15 03:26:58,420 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:26:58,504 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:26:59,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:26:59,164 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:26:59,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:26:59,650 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:26:59,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59 WrapperNode [2019-10-15 03:26:59,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:26:59,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:26:59,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:26:59,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:26:59,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (1/1) ... [2019-10-15 03:26:59,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:26:59,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:26:59,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:26:59,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:26:59,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (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 [2019-10-15 03:26:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:26:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:26:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:26:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 03:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-15 03:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-15 03:26:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-15 03:26:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-15 03:26:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-15 03:26:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-15 03:26:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-15 03:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-15 03:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:27:02,752 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:27:02,753 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 03:27:02,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:27:02 BoogieIcfgContainer [2019-10-15 03:27:02,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:27:02,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:27:02,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:27:02,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:27:02,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:26:58" (1/3) ... [2019-10-15 03:27:02,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22f7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:27:02, skipping insertion in model container [2019-10-15 03:27:02,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:59" (2/3) ... [2019-10-15 03:27:02,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22f7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:27:02, skipping insertion in model container [2019-10-15 03:27:02,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:27:02" (3/3) ... [2019-10-15 03:27:02,763 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-15 03:27:02,773 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:27:02,782 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-15 03:27:02,794 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-15 03:27:02,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:27:02,824 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:27:02,824 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:27:02,824 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:27:02,824 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:27:02,824 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:27:02,824 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:27:02,824 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:27:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2019-10-15 03:27:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:27:02,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:02,878 INFO L380 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] [2019-10-15 03:27:02,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash 588212400, now seen corresponding path program 1 times [2019-10-15 03:27:02,896 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:02,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380858687] [2019-10-15 03:27:02,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:02,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:02,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:04,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380858687] [2019-10-15 03:27:04,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:04,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:27:04,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787843566] [2019-10-15 03:27:04,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:27:04,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:04,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:27:04,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:04,176 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2019-10-15 03:27:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:04,403 INFO L93 Difference]: Finished difference Result 799 states and 1397 transitions. [2019-10-15 03:27:04,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:27:04,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-15 03:27:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:04,424 INFO L225 Difference]: With dead ends: 799 [2019-10-15 03:27:04,425 INFO L226 Difference]: Without dead ends: 547 [2019-10-15 03:27:04,430 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-15 03:27:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 526. [2019-10-15 03:27:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-15 03:27:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 700 transitions. [2019-10-15 03:27:04,551 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 700 transitions. Word has length 121 [2019-10-15 03:27:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:04,551 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 700 transitions. [2019-10-15 03:27:04,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:27:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 700 transitions. [2019-10-15 03:27:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 03:27:04,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:04,563 INFO L380 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] [2019-10-15 03:27:04,563 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:04,564 INFO L82 PathProgramCache]: Analyzing trace with hash -2096026532, now seen corresponding path program 1 times [2019-10-15 03:27:04,565 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:04,565 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945062332] [2019-10-15 03:27:04,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:04,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:04,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:04,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945062332] [2019-10-15 03:27:04,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:04,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:27:04,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722684091] [2019-10-15 03:27:04,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:27:04,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:27:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:27:04,687 INFO L87 Difference]: Start difference. First operand 526 states and 700 transitions. Second operand 3 states. [2019-10-15 03:27:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:04,806 INFO L93 Difference]: Finished difference Result 1158 states and 1577 transitions. [2019-10-15 03:27:04,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:27:04,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-15 03:27:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:04,813 INFO L225 Difference]: With dead ends: 1158 [2019-10-15 03:27:04,813 INFO L226 Difference]: Without dead ends: 698 [2019-10-15 03:27:04,817 INFO L600 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 [2019-10-15 03:27:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-15 03:27:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 635. [2019-10-15 03:27:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 03:27:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 874 transitions. [2019-10-15 03:27:04,856 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 874 transitions. Word has length 123 [2019-10-15 03:27:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:04,857 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 874 transitions. [2019-10-15 03:27:04,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:27:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 874 transitions. [2019-10-15 03:27:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 03:27:04,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:04,859 INFO L380 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] [2019-10-15 03:27:04,860 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:04,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1793558548, now seen corresponding path program 1 times [2019-10-15 03:27:04,861 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:04,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93304574] [2019-10-15 03:27:04,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:04,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:04,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:05,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93304574] [2019-10-15 03:27:05,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:05,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:27:05,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101958899] [2019-10-15 03:27:05,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:27:05,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:27:05,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:27:05,013 INFO L87 Difference]: Start difference. First operand 635 states and 874 transitions. Second operand 3 states. [2019-10-15 03:27:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:05,127 INFO L93 Difference]: Finished difference Result 1436 states and 2028 transitions. [2019-10-15 03:27:05,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:27:05,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-15 03:27:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:05,133 INFO L225 Difference]: With dead ends: 1436 [2019-10-15 03:27:05,133 INFO L226 Difference]: Without dead ends: 892 [2019-10-15 03:27:05,135 INFO L600 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 [2019-10-15 03:27:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-10-15 03:27:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 839. [2019-10-15 03:27:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2019-10-15 03:27:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1202 transitions. [2019-10-15 03:27:05,172 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1202 transitions. Word has length 123 [2019-10-15 03:27:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:05,172 INFO L462 AbstractCegarLoop]: Abstraction has 839 states and 1202 transitions. [2019-10-15 03:27:05,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:27:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1202 transitions. [2019-10-15 03:27:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:27:05,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:05,175 INFO L380 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] [2019-10-15 03:27:05,175 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash -214950358, now seen corresponding path program 1 times [2019-10-15 03:27:05,176 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:05,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163244019] [2019-10-15 03:27:05,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:05,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:05,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:05,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163244019] [2019-10-15 03:27:05,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:05,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:27:05,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658671731] [2019-10-15 03:27:05,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:27:05,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:05,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:27:05,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:27:05,693 INFO L87 Difference]: Start difference. First operand 839 states and 1202 transitions. Second operand 7 states. [2019-10-15 03:27:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:06,065 INFO L93 Difference]: Finished difference Result 2522 states and 3737 transitions. [2019-10-15 03:27:06,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:27:06,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2019-10-15 03:27:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:06,077 INFO L225 Difference]: With dead ends: 2522 [2019-10-15 03:27:06,077 INFO L226 Difference]: Without dead ends: 1830 [2019-10-15 03:27:06,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:27:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2019-10-15 03:27:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1192. [2019-10-15 03:27:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2019-10-15 03:27:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1722 transitions. [2019-10-15 03:27:06,182 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1722 transitions. Word has length 126 [2019-10-15 03:27:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:06,183 INFO L462 AbstractCegarLoop]: Abstraction has 1192 states and 1722 transitions. [2019-10-15 03:27:06,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:27:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1722 transitions. [2019-10-15 03:27:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:27:06,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:06,188 INFO L380 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] [2019-10-15 03:27:06,188 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1464091590, now seen corresponding path program 1 times [2019-10-15 03:27:06,189 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:06,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132952536] [2019-10-15 03:27:06,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:06,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:06,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:06,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132952536] [2019-10-15 03:27:06,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:06,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:27:06,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471050186] [2019-10-15 03:27:06,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:27:06,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:27:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:27:06,338 INFO L87 Difference]: Start difference. First operand 1192 states and 1722 transitions. Second operand 6 states. [2019-10-15 03:27:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:06,942 INFO L93 Difference]: Finished difference Result 2984 states and 4413 transitions. [2019-10-15 03:27:06,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:27:06,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-10-15 03:27:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:06,955 INFO L225 Difference]: With dead ends: 2984 [2019-10-15 03:27:06,956 INFO L226 Difference]: Without dead ends: 1897 [2019-10-15 03:27:06,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:27:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2019-10-15 03:27:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1813. [2019-10-15 03:27:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2019-10-15 03:27:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2722 transitions. [2019-10-15 03:27:07,099 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2722 transitions. Word has length 126 [2019-10-15 03:27:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:07,100 INFO L462 AbstractCegarLoop]: Abstraction has 1813 states and 2722 transitions. [2019-10-15 03:27:07,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:27:07,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2722 transitions. [2019-10-15 03:27:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:27:07,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:07,102 INFO L380 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] [2019-10-15 03:27:07,103 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:07,103 INFO L82 PathProgramCache]: Analyzing trace with hash -406353067, now seen corresponding path program 1 times [2019-10-15 03:27:07,103 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:07,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067382174] [2019-10-15 03:27:07,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:07,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:07,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:07,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067382174] [2019-10-15 03:27:07,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:07,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:27:07,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128832594] [2019-10-15 03:27:07,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:27:07,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:07,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:27:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:07,476 INFO L87 Difference]: Start difference. First operand 1813 states and 2722 transitions. Second operand 5 states. [2019-10-15 03:27:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:07,820 INFO L93 Difference]: Finished difference Result 3438 states and 5192 transitions. [2019-10-15 03:27:07,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:27:07,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-15 03:27:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:07,836 INFO L225 Difference]: With dead ends: 3438 [2019-10-15 03:27:07,837 INFO L226 Difference]: Without dead ends: 2811 [2019-10-15 03:27:07,840 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2019-10-15 03:27:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2790. [2019-10-15 03:27:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2019-10-15 03:27:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4226 transitions. [2019-10-15 03:27:08,036 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4226 transitions. Word has length 126 [2019-10-15 03:27:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:08,037 INFO L462 AbstractCegarLoop]: Abstraction has 2790 states and 4226 transitions. [2019-10-15 03:27:08,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:27:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4226 transitions. [2019-10-15 03:27:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:27:08,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:08,039 INFO L380 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] [2019-10-15 03:27:08,040 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:08,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:08,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1334235076, now seen corresponding path program 1 times [2019-10-15 03:27:08,040 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:08,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253870420] [2019-10-15 03:27:08,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:08,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:08,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:08,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253870420] [2019-10-15 03:27:08,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:08,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:27:08,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912929942] [2019-10-15 03:27:08,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:27:08,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:27:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:27:08,132 INFO L87 Difference]: Start difference. First operand 2790 states and 4226 transitions. Second operand 3 states. [2019-10-15 03:27:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:08,620 INFO L93 Difference]: Finished difference Result 7454 states and 11497 transitions. [2019-10-15 03:27:08,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:27:08,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-15 03:27:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:08,644 INFO L225 Difference]: With dead ends: 7454 [2019-10-15 03:27:08,644 INFO L226 Difference]: Without dead ends: 4709 [2019-10-15 03:27:08,651 INFO L600 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 [2019-10-15 03:27:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2019-10-15 03:27:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4520. [2019-10-15 03:27:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4520 states. [2019-10-15 03:27:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6986 transitions. [2019-10-15 03:27:08,976 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6986 transitions. Word has length 128 [2019-10-15 03:27:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:08,976 INFO L462 AbstractCegarLoop]: Abstraction has 4520 states and 6986 transitions. [2019-10-15 03:27:08,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:27:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6986 transitions. [2019-10-15 03:27:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:27:08,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:08,979 INFO L380 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] [2019-10-15 03:27:08,979 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:08,980 INFO L82 PathProgramCache]: Analyzing trace with hash -144793796, now seen corresponding path program 1 times [2019-10-15 03:27:08,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:08,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111217412] [2019-10-15 03:27:08,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:08,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:08,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:09,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111217412] [2019-10-15 03:27:09,154 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:09,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:27:09,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310604848] [2019-10-15 03:27:09,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:27:09,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:27:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:09,156 INFO L87 Difference]: Start difference. First operand 4520 states and 6986 transitions. Second operand 5 states. [2019-10-15 03:27:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:09,669 INFO L93 Difference]: Finished difference Result 8997 states and 13926 transitions. [2019-10-15 03:27:09,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:27:09,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-10-15 03:27:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:09,690 INFO L225 Difference]: With dead ends: 8997 [2019-10-15 03:27:09,691 INFO L226 Difference]: Without dead ends: 4520 [2019-10-15 03:27:09,701 INFO L600 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 [2019-10-15 03:27:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2019-10-15 03:27:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4520. [2019-10-15 03:27:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4520 states. [2019-10-15 03:27:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6896 transitions. [2019-10-15 03:27:10,263 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6896 transitions. Word has length 131 [2019-10-15 03:27:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:10,264 INFO L462 AbstractCegarLoop]: Abstraction has 4520 states and 6896 transitions. [2019-10-15 03:27:10,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:27:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6896 transitions. [2019-10-15 03:27:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:27:10,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:10,267 INFO L380 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] [2019-10-15 03:27:10,268 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash 156140215, now seen corresponding path program 1 times [2019-10-15 03:27:10,268 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:10,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173741101] [2019-10-15 03:27:10,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:10,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:10,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:10,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173741101] [2019-10-15 03:27:10,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:10,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:27:10,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705410965] [2019-10-15 03:27:10,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:27:10,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:10,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:27:10,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:27:10,696 INFO L87 Difference]: Start difference. First operand 4520 states and 6896 transitions. Second operand 5 states. [2019-10-15 03:27:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:27:11,294 INFO L93 Difference]: Finished difference Result 12085 states and 18447 transitions. [2019-10-15 03:27:11,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:27:11,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-10-15 03:27:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:27:11,331 INFO L225 Difference]: With dead ends: 12085 [2019-10-15 03:27:11,331 INFO L226 Difference]: Without dead ends: 7697 [2019-10-15 03:27:11,341 INFO L600 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 [2019-10-15 03:27:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2019-10-15 03:27:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 7676. [2019-10-15 03:27:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2019-10-15 03:27:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 11602 transitions. [2019-10-15 03:27:11,943 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 11602 transitions. Word has length 131 [2019-10-15 03:27:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:27:11,946 INFO L462 AbstractCegarLoop]: Abstraction has 7676 states and 11602 transitions. [2019-10-15 03:27:11,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:27:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 11602 transitions. [2019-10-15 03:27:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 03:27:11,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:27:11,951 INFO L380 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] [2019-10-15 03:27:11,951 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:27:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:27:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1833269574, now seen corresponding path program 1 times [2019-10-15 03:27:11,954 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:27:11,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763286623] [2019-10-15 03:27:11,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:11,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:27:11,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:27:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:27:13,053 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-10-15 03:27:13,211 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-10-15 03:27:13,374 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-10-15 03:27:13,557 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-10-15 03:27:13,719 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-10-15 03:27:13,882 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-15 03:27:14,041 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-10-15 03:27:14,197 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-15 03:27:14,421 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2019-10-15 03:27:14,593 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-10-15 03:27:14,772 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-10-15 03:27:15,003 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-10-15 03:27:15,225 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-10-15 03:27:15,386 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-10-15 03:27:15,581 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-10-15 03:27:15,750 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-10-15 03:27:15,973 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-10-15 03:27:16,175 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-10-15 03:27:16,357 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-10-15 03:27:16,857 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-10-15 03:27:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:27:18,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763286623] [2019-10-15 03:27:18,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:27:18,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-10-15 03:27:18,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915989891] [2019-10-15 03:27:18,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-15 03:27:18,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:27:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-15 03:27:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:27:18,062 INFO L87 Difference]: Start difference. First operand 7676 states and 11602 transitions. Second operand 35 states. [2019-10-15 03:27:18,601 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2019-10-15 03:27:19,809 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-10-15 03:27:20,123 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-10-15 03:27:20,452 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-10-15 03:27:20,812 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-10-15 03:27:21,140 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-15 03:27:21,707 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-10-15 03:27:22,190 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2019-10-15 03:27:22,915 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2019-10-15 03:27:23,482 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-10-15 03:27:24,012 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 108 [2019-10-15 03:27:24,701 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 114 [2019-10-15 03:27:25,351 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 108 [2019-10-15 03:27:25,908 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 103 [2019-10-15 03:27:26,621 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2019-10-15 03:27:27,144 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 105 [2019-10-15 03:27:27,955 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 108 [2019-10-15 03:27:28,701 WARN L191 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 111 [2019-10-15 03:27:29,221 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2019-10-15 03:27:29,591 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-10-15 03:27:33,004 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-10-15 03:27:35,298 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55