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-f4eb214f-m [2019-10-13 23:21:30,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:21:30,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:21:30,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:21:30,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:21:30,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:21:30,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:21:30,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:21:30,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:21:30,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:21:30,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:21:30,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:21:30,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:21:30,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:21:30,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:21:30,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:21:30,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:21:30,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:21:30,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:21:30,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:21:30,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:21:30,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:21:30,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:21:30,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:21:30,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:21:30,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:21:30,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:21:30,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:21:30,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:21:30,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:21:30,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:21:30,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:21:30,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:21:30,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:21:30,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:21:30,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:21:30,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:21:30,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:21:30,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:21:30,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:21:30,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:21:30,689 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 [2019-10-13 23:21:30,703 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:21:30,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:21:30,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:21:30,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:21:30,705 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:21:30,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:21:30,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:21:30,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:21:30,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:21:30,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:21:30,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:21:30,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:21:30,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:21:30,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:21:30,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:21:30,707 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:21:30,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:21:30,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:21:30,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:21:30,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:21:30,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:21:30,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:21:30,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:21:30,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:21:30,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:21:30,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:21:30,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:21:30,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:21:30,709 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 [2019-10-13 23:21:30,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:21:31,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:21:31,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:21:31,010 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:21:31,011 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:21:31,011 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 23:21:31,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ad88abd/35998314dcf54dc69db617d0bec141c3/FLAGceab4c196 [2019-10-13 23:21:31,657 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:21:31,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 23:21:31,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ad88abd/35998314dcf54dc69db617d0bec141c3/FLAGceab4c196 [2019-10-13 23:21:31,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ad88abd/35998314dcf54dc69db617d0bec141c3 [2019-10-13 23:21:31,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:21:31,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:21:31,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:21:31,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:21:31,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:21:31,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:21:31" (1/1) ... [2019-10-13 23:21:31,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e6ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:31, skipping insertion in model container [2019-10-13 23:21:31,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:21:31" (1/1) ... [2019-10-13 23:21:31,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:21:31,960 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:21:32,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:21:32,656 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:21:33,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:21:33,145 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:21:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33 WrapperNode [2019-10-13 23:21:33,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:21:33,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:21:33,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:21:33,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:21:33,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (1/1) ... [2019-10-13 23:21:33,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:21:33,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:21:33,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:21:33,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:21:33,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (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 [2019-10-13 23:21:33,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:21:33,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:21:33,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:21:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:21:33,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 23:21:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 23:21:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 23:21:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 23:21:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:21:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 23:21:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 23:21:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 23:21:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 23:21:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 23:21:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 23:21:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 23:21:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:21:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:21:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:21:35,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:21:35,859 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 23:21:35,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:21:35 BoogieIcfgContainer [2019-10-13 23:21:35,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:21:35,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:21:35,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:21:35,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:21:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:21:31" (1/3) ... [2019-10-13 23:21:35,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115b28c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:21:35, skipping insertion in model container [2019-10-13 23:21:35,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:21:33" (2/3) ... [2019-10-13 23:21:35,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115b28c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:21:35, skipping insertion in model container [2019-10-13 23:21:35,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:21:35" (3/3) ... [2019-10-13 23:21:35,877 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 23:21:35,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:21:35,902 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 23:21:35,914 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 23:21:35,943 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:21:35,943 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:21:35,943 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:21:35,944 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:21:35,944 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:21:35,944 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:21:35,944 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:21:35,944 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:21:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2019-10-13 23:21:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:21:35,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:35,986 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] [2019-10-13 23:21:35,988 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1098759110, now seen corresponding path program 1 times [2019-10-13 23:21:36,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:36,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606829033] [2019-10-13 23:21:36,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:36,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:36,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:37,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606829033] [2019-10-13 23:21:37,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:37,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:37,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558046417] [2019-10-13 23:21:37,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:37,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:37,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:37,196 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 5 states. [2019-10-13 23:21:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:37,396 INFO L93 Difference]: Finished difference Result 772 states and 1346 transitions. [2019-10-13 23:21:37,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:37,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-10-13 23:21:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:37,416 INFO L225 Difference]: With dead ends: 772 [2019-10-13 23:21:37,416 INFO L226 Difference]: Without dead ends: 534 [2019-10-13 23:21:37,422 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 [2019-10-13 23:21:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-13 23:21:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 512. [2019-10-13 23:21:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-13 23:21:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 662 transitions. [2019-10-13 23:21:37,519 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 662 transitions. Word has length 120 [2019-10-13 23:21:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:37,520 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 662 transitions. [2019-10-13 23:21:37,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 662 transitions. [2019-10-13 23:21:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:21:37,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:37,525 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] [2019-10-13 23:21:37,526 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1350043954, now seen corresponding path program 1 times [2019-10-13 23:21:37,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:37,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011544030] [2019-10-13 23:21:37,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:37,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:37,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:37,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011544030] [2019-10-13 23:21:37,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:37,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:21:37,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179725893] [2019-10-13 23:21:37,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:21:37,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:37,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:21:37,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:21:37,709 INFO L87 Difference]: Start difference. First operand 512 states and 662 transitions. Second operand 3 states. [2019-10-13 23:21:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:37,791 INFO L93 Difference]: Finished difference Result 913 states and 1176 transitions. [2019-10-13 23:21:37,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:21:37,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-13 23:21:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:37,798 INFO L225 Difference]: With dead ends: 913 [2019-10-13 23:21:37,798 INFO L226 Difference]: Without dead ends: 730 [2019-10-13 23:21:37,804 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 [2019-10-13 23:21:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2019-10-13 23:21:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 708. [2019-10-13 23:21:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-13 23:21:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 915 transitions. [2019-10-13 23:21:37,862 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 915 transitions. Word has length 126 [2019-10-13 23:21:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:37,865 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 915 transitions. [2019-10-13 23:21:37,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:21:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 915 transitions. [2019-10-13 23:21:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:21:37,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:37,879 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] [2019-10-13 23:21:37,879 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:37,880 INFO L82 PathProgramCache]: Analyzing trace with hash -376969821, now seen corresponding path program 1 times [2019-10-13 23:21:37,880 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:37,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995473157] [2019-10-13 23:21:37,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:37,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:37,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:38,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995473157] [2019-10-13 23:21:38,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:38,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:38,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618217831] [2019-10-13 23:21:38,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:38,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:38,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:38,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:38,065 INFO L87 Difference]: Start difference. First operand 708 states and 915 transitions. Second operand 5 states. [2019-10-13 23:21:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:38,295 INFO L93 Difference]: Finished difference Result 1375 states and 1783 transitions. [2019-10-13 23:21:38,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:38,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-13 23:21:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:38,299 INFO L225 Difference]: With dead ends: 1375 [2019-10-13 23:21:38,300 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 23:21:38,301 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 [2019-10-13 23:21:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 23:21:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2019-10-13 23:21:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-13 23:21:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 902 transitions. [2019-10-13 23:21:38,342 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 902 transitions. Word has length 126 [2019-10-13 23:21:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:38,343 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 902 transitions. [2019-10-13 23:21:38,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 902 transitions. [2019-10-13 23:21:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:21:38,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:38,346 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] [2019-10-13 23:21:38,347 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash -222874296, now seen corresponding path program 1 times [2019-10-13 23:21:38,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:38,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743945122] [2019-10-13 23:21:38,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:38,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:38,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:38,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743945122] [2019-10-13 23:21:38,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:38,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:38,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522667649] [2019-10-13 23:21:38,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:38,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:38,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:38,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:38,777 INFO L87 Difference]: Start difference. First operand 708 states and 902 transitions. Second operand 5 states. [2019-10-13 23:21:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:39,027 INFO L93 Difference]: Finished difference Result 1966 states and 2508 transitions. [2019-10-13 23:21:39,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:39,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-13 23:21:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:39,037 INFO L225 Difference]: With dead ends: 1966 [2019-10-13 23:21:39,037 INFO L226 Difference]: Without dead ends: 1334 [2019-10-13 23:21:39,040 INFO L600 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 [2019-10-13 23:21:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2019-10-13 23:21:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1312. [2019-10-13 23:21:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-13 23:21:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1674 transitions. [2019-10-13 23:21:39,160 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1674 transitions. Word has length 126 [2019-10-13 23:21:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:39,161 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1674 transitions. [2019-10-13 23:21:39,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1674 transitions. [2019-10-13 23:21:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:21:39,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:39,167 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] [2019-10-13 23:21:39,167 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash -567122856, now seen corresponding path program 1 times [2019-10-13 23:21:39,169 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:39,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146010876] [2019-10-13 23:21:39,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:39,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:39,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:39,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146010876] [2019-10-13 23:21:39,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:39,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:39,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58226866] [2019-10-13 23:21:39,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:39,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:39,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:39,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:39,374 INFO L87 Difference]: Start difference. First operand 1312 states and 1674 transitions. Second operand 5 states. [2019-10-13 23:21:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:39,652 INFO L93 Difference]: Finished difference Result 2550 states and 3256 transitions. [2019-10-13 23:21:39,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:39,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-13 23:21:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:39,660 INFO L225 Difference]: With dead ends: 2550 [2019-10-13 23:21:39,661 INFO L226 Difference]: Without dead ends: 1312 [2019-10-13 23:21:39,664 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 [2019-10-13 23:21:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2019-10-13 23:21:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2019-10-13 23:21:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-13 23:21:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1650 transitions. [2019-10-13 23:21:39,759 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1650 transitions. Word has length 132 [2019-10-13 23:21:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:39,760 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1650 transitions. [2019-10-13 23:21:39,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1650 transitions. [2019-10-13 23:21:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:21:39,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:39,764 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] [2019-10-13 23:21:39,764 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1860087442, now seen corresponding path program 1 times [2019-10-13 23:21:39,765 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:39,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085677837] [2019-10-13 23:21:39,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:39,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:39,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:40,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085677837] [2019-10-13 23:21:40,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:40,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:21:40,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760246175] [2019-10-13 23:21:40,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:21:40,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:40,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:21:40,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:21:40,346 INFO L87 Difference]: Start difference. First operand 1312 states and 1650 transitions. Second operand 7 states. [2019-10-13 23:21:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:40,980 INFO L93 Difference]: Finished difference Result 4581 states and 5763 transitions. [2019-10-13 23:21:40,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:21:40,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-13 23:21:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:40,998 INFO L225 Difference]: With dead ends: 4581 [2019-10-13 23:21:40,998 INFO L226 Difference]: Without dead ends: 3584 [2019-10-13 23:21:41,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:21:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2019-10-13 23:21:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3540. [2019-10-13 23:21:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2019-10-13 23:21:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4440 transitions. [2019-10-13 23:21:41,403 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4440 transitions. Word has length 132 [2019-10-13 23:21:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:41,405 INFO L462 AbstractCegarLoop]: Abstraction has 3540 states and 4440 transitions. [2019-10-13 23:21:41,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:21:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4440 transitions. [2019-10-13 23:21:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:21:41,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:41,412 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] [2019-10-13 23:21:41,412 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash -713128606, now seen corresponding path program 1 times [2019-10-13 23:21:41,413 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:41,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165502536] [2019-10-13 23:21:41,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:41,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:41,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:41,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165502536] [2019-10-13 23:21:41,923 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:41,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:41,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867230414] [2019-10-13 23:21:41,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:41,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:41,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:41,925 INFO L87 Difference]: Start difference. First operand 3540 states and 4440 transitions. Second operand 5 states. [2019-10-13 23:21:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:42,184 INFO L93 Difference]: Finished difference Result 5237 states and 6643 transitions. [2019-10-13 23:21:42,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:42,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-13 23:21:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:42,198 INFO L225 Difference]: With dead ends: 5237 [2019-10-13 23:21:42,199 INFO L226 Difference]: Without dead ends: 2494 [2019-10-13 23:21:42,210 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 [2019-10-13 23:21:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2019-10-13 23:21:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2456. [2019-10-13 23:21:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-10-13 23:21:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3074 transitions. [2019-10-13 23:21:42,495 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3074 transitions. Word has length 132 [2019-10-13 23:21:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:42,496 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3074 transitions. [2019-10-13 23:21:42,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3074 transitions. [2019-10-13 23:21:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 23:21:42,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:42,503 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, 1, 1] [2019-10-13 23:21:42,503 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash -930495931, now seen corresponding path program 1 times [2019-10-13 23:21:42,504 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:42,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114587196] [2019-10-13 23:21:42,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:42,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:42,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:42,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114587196] [2019-10-13 23:21:42,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:42,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:21:42,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489839321] [2019-10-13 23:21:42,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:21:42,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:21:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:21:42,664 INFO L87 Difference]: Start difference. First operand 2456 states and 3074 transitions. Second operand 5 states. [2019-10-13 23:21:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:43,025 INFO L93 Difference]: Finished difference Result 4394 states and 5496 transitions. [2019-10-13 23:21:43,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:21:43,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-13 23:21:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:43,037 INFO L225 Difference]: With dead ends: 4394 [2019-10-13 23:21:43,037 INFO L226 Difference]: Without dead ends: 2456 [2019-10-13 23:21:43,042 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 [2019-10-13 23:21:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2019-10-13 23:21:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2019-10-13 23:21:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-10-13 23:21:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3034 transitions. [2019-10-13 23:21:43,276 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3034 transitions. Word has length 138 [2019-10-13 23:21:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:43,276 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3034 transitions. [2019-10-13 23:21:43,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:21:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3034 transitions. [2019-10-13 23:21:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 23:21:43,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:43,282 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, 1, 1] [2019-10-13 23:21:43,283 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:43,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:43,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1668421802, now seen corresponding path program 1 times [2019-10-13 23:21:43,284 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:43,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394643020] [2019-10-13 23:21:43,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:43,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:43,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:45,100 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-10-13 23:21:45,314 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-10-13 23:21:45,470 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-13 23:21:45,638 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-13 23:21:45,791 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-10-13 23:21:45,982 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-10-13 23:21:46,464 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-10-13 23:21:46,651 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-10-13 23:21:46,869 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-10-13 23:21:47,076 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-10-13 23:21:47,258 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2019-10-13 23:21:47,695 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2019-10-13 23:21:47,914 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-10-13 23:21:48,386 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2019-10-13 23:21:48,615 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-10-13 23:21:48,822 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-10-13 23:21:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:21:49,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394643020] [2019-10-13 23:21:49,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:21:49,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2019-10-13 23:21:49,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865268486] [2019-10-13 23:21:49,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-13 23:21:49,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-13 23:21:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 23:21:49,633 INFO L87 Difference]: Start difference. First operand 2456 states and 3034 transitions. Second operand 34 states. [2019-10-13 23:21:49,996 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-13 23:21:50,545 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-10-13 23:21:50,878 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-13 23:21:51,280 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2019-10-13 23:21:51,823 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-10-13 23:21:52,374 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-13 23:21:52,804 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-13 23:21:53,175 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-13 23:21:53,786 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-13 23:21:54,350 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-10-13 23:21:54,906 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-10-13 23:21:55,534 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2019-10-13 23:21:55,985 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-13 23:21:56,672 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-10-13 23:21:57,919 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-10-13 23:21:58,346 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-10-13 23:21:58,861 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-10-13 23:21:59,119 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-10-13 23:21:59,396 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2019-10-13 23:21:59,650 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-10-13 23:21:59,899 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-10-13 23:22:00,176 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-10-13 23:22:01,353 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-10-13 23:22:01,702 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-10-13 23:22:03,995 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-13 23:22:04,444 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 69 [2019-10-13 23:22:05,052 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2019-10-13 23:22:05,335 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-10-13 23:22:06,668 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94