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 0.1.24-13a467a-m [2019-10-15 03:26:10,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:26:10,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:26:10,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:26:10,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:26:10,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:26:10,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:26:10,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:26:10,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:26:10,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:26:10,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:26:10,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:26:10,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:26:10,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:26:10,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:26:10,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:26:10,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:26:10,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:26:10,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:26:10,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:26:10,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:26:10,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:26:10,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:26:10,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:26:10,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:26:10,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:26:10,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:26:10,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:26:10,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:26:10,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:26:10,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:26:10,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:26:10,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:26:10,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:26:10,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:26:10,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:26:10,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:26:10,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:26:10,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:26:10,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:26:10,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:26:10,608 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 03:26:10,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:26:10,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:26:10,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:26:10,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:26:10,624 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:26:10,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:26:10,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:26:10,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:26:10,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:26:10,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:26:10,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:26:10,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:26:10,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:26:10,626 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:26:10,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:26:10,626 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:26:10,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:26:10,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:26:10,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:26:10,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:26:10,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:26:10,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:26:10,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:26:10,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:26:10,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:26:10,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:26:10,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:26:10,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:26:10,628 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 03:26:10,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:26:10,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:26:10,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:26:10,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:26:10,928 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:26:10,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-15 03:26:10,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b585b78/0e367e70735946f3a7779cce18077a1b/FLAGeb36a10fc [2019-10-15 03:26:11,519 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:26:11,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-15 03:26:11,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b585b78/0e367e70735946f3a7779cce18077a1b/FLAGeb36a10fc [2019-10-15 03:26:11,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b585b78/0e367e70735946f3a7779cce18077a1b [2019-10-15 03:26:11,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:26:11,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:26:11,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:26:11,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:26:11,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:26:11,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:26:11" (1/1) ... [2019-10-15 03:26:11,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0e9bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:11, skipping insertion in model container [2019-10-15 03:26:11,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:26:11" (1/1) ... [2019-10-15 03:26:11,849 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:26:11,929 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:26:12,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:26:12,600 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:26:13,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:26:13,061 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:26:13,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13 WrapperNode [2019-10-15 03:26:13,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:26:13,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:26:13,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:26:13,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:26:13,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (1/1) ... [2019-10-15 03:26:13,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:26:13,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:26:13,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:26:13,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:26:13,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (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 03:26:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:26:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:26:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:26:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:26:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:26:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:26:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 03:26:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-15 03:26:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:26:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-15 03:26:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-15 03:26:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-15 03:26:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-15 03:26:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-15 03:26:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-15 03:26:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-15 03:26:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:26:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:26:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:26:15,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:26:15,915 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 03:26:15,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:26:15 BoogieIcfgContainer [2019-10-15 03:26:15,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:26:15,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:26:15,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:26:15,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:26:15,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:26:11" (1/3) ... [2019-10-15 03:26:15,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:26:15, skipping insertion in model container [2019-10-15 03:26:15,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:26:13" (2/3) ... [2019-10-15 03:26:15,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:26:15, skipping insertion in model container [2019-10-15 03:26:15,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:26:15" (3/3) ... [2019-10-15 03:26:15,925 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-15 03:26:15,935 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:26:15,944 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-15 03:26:15,956 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-15 03:26:15,986 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:26:15,986 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:26:15,986 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:26:15,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:26:15,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:26:15,987 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:26:15,987 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:26:15,987 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:26:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2019-10-15 03:26:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:26:16,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:16,032 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] [2019-10-15 03:26:16,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1098759110, now seen corresponding path program 1 times [2019-10-15 03:26:16,052 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:16,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702432241] [2019-10-15 03:26:16,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:16,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:16,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:17,265 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 03:26:17,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702432241] [2019-10-15 03:26:17,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:17,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:17,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194043138] [2019-10-15 03:26:17,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:17,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:17,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:17,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:17,291 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 5 states. [2019-10-15 03:26:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:17,575 INFO L93 Difference]: Finished difference Result 772 states and 1346 transitions. [2019-10-15 03:26:17,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:17,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-10-15 03:26:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:17,606 INFO L225 Difference]: With dead ends: 772 [2019-10-15 03:26:17,606 INFO L226 Difference]: Without dead ends: 534 [2019-10-15 03:26:17,615 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 03:26:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-15 03:26:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 512. [2019-10-15 03:26:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-15 03:26:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 662 transitions. [2019-10-15 03:26:17,796 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 662 transitions. Word has length 120 [2019-10-15 03:26:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:17,797 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 662 transitions. [2019-10-15 03:26:17,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 662 transitions. [2019-10-15 03:26:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:26:17,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:17,809 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 03:26:17,809 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:17,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1350043954, now seen corresponding path program 1 times [2019-10-15 03:26:17,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:17,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770304960] [2019-10-15 03:26:17,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:17,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:17,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:17,984 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 03:26:17,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770304960] [2019-10-15 03:26:17,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:17,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:26:17,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492505624] [2019-10-15 03:26:17,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:26:17,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:17,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:26:17,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:26:17,988 INFO L87 Difference]: Start difference. First operand 512 states and 662 transitions. Second operand 3 states. [2019-10-15 03:26:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:18,075 INFO L93 Difference]: Finished difference Result 913 states and 1176 transitions. [2019-10-15 03:26:18,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:26:18,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-15 03:26:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:18,080 INFO L225 Difference]: With dead ends: 913 [2019-10-15 03:26:18,080 INFO L226 Difference]: Without dead ends: 730 [2019-10-15 03:26:18,082 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 03:26:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2019-10-15 03:26:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 708. [2019-10-15 03:26:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-15 03:26:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 915 transitions. [2019-10-15 03:26:18,112 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 915 transitions. Word has length 126 [2019-10-15 03:26:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:18,113 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 915 transitions. [2019-10-15 03:26:18,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:26:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 915 transitions. [2019-10-15 03:26:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:26:18,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:18,116 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 03:26:18,116 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:18,116 INFO L82 PathProgramCache]: Analyzing trace with hash -376969821, now seen corresponding path program 1 times [2019-10-15 03:26:18,117 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:18,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374564496] [2019-10-15 03:26:18,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:18,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:18,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:18,315 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 03:26:18,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374564496] [2019-10-15 03:26:18,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:18,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:18,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882546393] [2019-10-15 03:26:18,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:18,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:18,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:18,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:18,320 INFO L87 Difference]: Start difference. First operand 708 states and 915 transitions. Second operand 5 states. [2019-10-15 03:26:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:18,601 INFO L93 Difference]: Finished difference Result 1375 states and 1783 transitions. [2019-10-15 03:26:18,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:18,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-15 03:26:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:18,605 INFO L225 Difference]: With dead ends: 1375 [2019-10-15 03:26:18,606 INFO L226 Difference]: Without dead ends: 708 [2019-10-15 03:26:18,608 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 03:26:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-15 03:26:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2019-10-15 03:26:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-15 03:26:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 902 transitions. [2019-10-15 03:26:18,703 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 902 transitions. Word has length 126 [2019-10-15 03:26:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:18,703 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 902 transitions. [2019-10-15 03:26:18,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 902 transitions. [2019-10-15 03:26:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:26:18,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:18,706 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 03:26:18,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash -222874296, now seen corresponding path program 1 times [2019-10-15 03:26:18,707 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:18,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958526216] [2019-10-15 03:26:18,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:18,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:18,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:19,064 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 03:26:19,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958526216] [2019-10-15 03:26:19,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:19,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:19,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303328687] [2019-10-15 03:26:19,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:19,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:19,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:19,068 INFO L87 Difference]: Start difference. First operand 708 states and 902 transitions. Second operand 5 states. [2019-10-15 03:26:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:19,347 INFO L93 Difference]: Finished difference Result 1966 states and 2508 transitions. [2019-10-15 03:26:19,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:19,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-15 03:26:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:19,358 INFO L225 Difference]: With dead ends: 1966 [2019-10-15 03:26:19,358 INFO L226 Difference]: Without dead ends: 1334 [2019-10-15 03:26:19,361 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 [2019-10-15 03:26:19,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2019-10-15 03:26:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1312. [2019-10-15 03:26:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-15 03:26:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1674 transitions. [2019-10-15 03:26:19,452 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1674 transitions. Word has length 126 [2019-10-15 03:26:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:19,454 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1674 transitions. [2019-10-15 03:26:19,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1674 transitions. [2019-10-15 03:26:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:26:19,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:19,461 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] [2019-10-15 03:26:19,461 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -567122856, now seen corresponding path program 1 times [2019-10-15 03:26:19,462 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:19,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569897892] [2019-10-15 03:26:19,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:19,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:19,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:19,618 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 03:26:19,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569897892] [2019-10-15 03:26:19,619 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:19,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:19,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794495686] [2019-10-15 03:26:19,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:19,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:19,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:19,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:19,621 INFO L87 Difference]: Start difference. First operand 1312 states and 1674 transitions. Second operand 5 states. [2019-10-15 03:26:19,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:19,934 INFO L93 Difference]: Finished difference Result 2550 states and 3256 transitions. [2019-10-15 03:26:19,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:19,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-15 03:26:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:19,943 INFO L225 Difference]: With dead ends: 2550 [2019-10-15 03:26:19,944 INFO L226 Difference]: Without dead ends: 1312 [2019-10-15 03:26:19,947 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 03:26:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2019-10-15 03:26:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2019-10-15 03:26:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-15 03:26:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1650 transitions. [2019-10-15 03:26:20,048 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1650 transitions. Word has length 132 [2019-10-15 03:26:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:20,049 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1650 transitions. [2019-10-15 03:26:20,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1650 transitions. [2019-10-15 03:26:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:26:20,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:20,053 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] [2019-10-15 03:26:20,053 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1860087442, now seen corresponding path program 1 times [2019-10-15 03:26:20,054 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:20,054 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068591914] [2019-10-15 03:26:20,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:20,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:20,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:20,649 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 03:26:20,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068591914] [2019-10-15 03:26:20,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:20,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:26:20,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096508945] [2019-10-15 03:26:20,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:26:20,652 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:26:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:26:20,652 INFO L87 Difference]: Start difference. First operand 1312 states and 1650 transitions. Second operand 7 states. [2019-10-15 03:26:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:21,294 INFO L93 Difference]: Finished difference Result 4581 states and 5763 transitions. [2019-10-15 03:26:21,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:26:21,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-15 03:26:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:21,313 INFO L225 Difference]: With dead ends: 4581 [2019-10-15 03:26:21,313 INFO L226 Difference]: Without dead ends: 3584 [2019-10-15 03:26:21,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:26:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2019-10-15 03:26:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3540. [2019-10-15 03:26:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2019-10-15 03:26:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4440 transitions. [2019-10-15 03:26:21,657 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4440 transitions. Word has length 132 [2019-10-15 03:26:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:21,659 INFO L462 AbstractCegarLoop]: Abstraction has 3540 states and 4440 transitions. [2019-10-15 03:26:21,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:26:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4440 transitions. [2019-10-15 03:26:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:26:21,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:21,667 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] [2019-10-15 03:26:21,668 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash -713128606, now seen corresponding path program 1 times [2019-10-15 03:26:21,668 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:21,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036317439] [2019-10-15 03:26:21,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:21,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:21,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:22,040 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 03:26:22,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036317439] [2019-10-15 03:26:22,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:22,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:22,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319385049] [2019-10-15 03:26:22,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:22,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:22,042 INFO L87 Difference]: Start difference. First operand 3540 states and 4440 transitions. Second operand 5 states. [2019-10-15 03:26:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:22,316 INFO L93 Difference]: Finished difference Result 5237 states and 6643 transitions. [2019-10-15 03:26:22,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:22,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-15 03:26:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:22,333 INFO L225 Difference]: With dead ends: 5237 [2019-10-15 03:26:22,333 INFO L226 Difference]: Without dead ends: 2494 [2019-10-15 03:26:22,342 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 03:26:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2019-10-15 03:26:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2456. [2019-10-15 03:26:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-10-15 03:26:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3074 transitions. [2019-10-15 03:26:22,678 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3074 transitions. Word has length 132 [2019-10-15 03:26:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:22,678 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3074 transitions. [2019-10-15 03:26:22,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3074 transitions. [2019-10-15 03:26:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 03:26:22,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:22,686 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] [2019-10-15 03:26:22,687 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:22,687 INFO L82 PathProgramCache]: Analyzing trace with hash -930495931, now seen corresponding path program 1 times [2019-10-15 03:26:22,688 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:22,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145785684] [2019-10-15 03:26:22,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:22,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:22,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:22,834 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 03:26:22,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145785684] [2019-10-15 03:26:22,834 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:22,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:26:22,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271455151] [2019-10-15 03:26:22,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:26:22,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:26:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:26:22,836 INFO L87 Difference]: Start difference. First operand 2456 states and 3074 transitions. Second operand 5 states. [2019-10-15 03:26:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:26:23,197 INFO L93 Difference]: Finished difference Result 4394 states and 5496 transitions. [2019-10-15 03:26:23,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:26:23,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-15 03:26:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:26:23,209 INFO L225 Difference]: With dead ends: 4394 [2019-10-15 03:26:23,209 INFO L226 Difference]: Without dead ends: 2456 [2019-10-15 03:26:23,214 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 03:26:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2019-10-15 03:26:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2019-10-15 03:26:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-10-15 03:26:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3034 transitions. [2019-10-15 03:26:23,434 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3034 transitions. Word has length 138 [2019-10-15 03:26:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:26:23,435 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3034 transitions. [2019-10-15 03:26:23,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:26:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3034 transitions. [2019-10-15 03:26:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 03:26:23,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:26:23,443 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] [2019-10-15 03:26:23,443 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:26:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:26:23,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1668421802, now seen corresponding path program 1 times [2019-10-15 03:26:23,444 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:26:23,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758995282] [2019-10-15 03:26:23,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:23,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:26:23,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:26:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:26:25,439 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-10-15 03:26:25,634 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-10-15 03:26:25,778 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-15 03:26:25,935 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-10-15 03:26:26,078 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-10-15 03:26:26,242 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-10-15 03:26:26,380 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-10-15 03:26:26,710 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-10-15 03:26:26,912 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-10-15 03:26:27,104 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-10-15 03:26:27,342 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-10-15 03:26:27,537 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2019-10-15 03:26:27,935 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2019-10-15 03:26:28,531 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2019-10-15 03:26:28,902 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-10-15 03:26:29,586 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 03:26:29,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758995282] [2019-10-15 03:26:29,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:26:29,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2019-10-15 03:26:29,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144713312] [2019-10-15 03:26:29,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-15 03:26:29,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:26:29,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-15 03:26:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:26:29,593 INFO L87 Difference]: Start difference. First operand 2456 states and 3034 transitions. Second operand 34 states. [2019-10-15 03:26:29,914 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-15 03:26:30,438 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-10-15 03:26:30,769 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-15 03:26:31,187 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2019-10-15 03:26:31,733 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-10-15 03:26:32,298 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-15 03:26:32,710 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-15 03:26:33,087 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-15 03:26:33,717 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-15 03:26:34,284 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-10-15 03:26:34,835 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-10-15 03:26:35,418 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2019-10-15 03:26:35,875 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-15 03:26:36,547 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-10-15 03:26:37,854 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-10-15 03:26:38,267 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-10-15 03:26:38,753 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-10-15 03:26:39,015 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-10-15 03:26:39,293 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2019-10-15 03:26:39,536 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-10-15 03:26:39,797 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-10-15 03:26:40,048 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-10-15 03:26:41,309 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-10-15 03:26:41,661 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-10-15 03:26:43,822 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-15 03:26:44,315 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 69 [2019-10-15 03:26:44,903 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2019-10-15 03:26:45,206 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-10-15 03:26:46,595 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2019-10-15 03:26:48,194 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-15 03:26:48,495 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-10-15 03:26:48,905 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-10-15 03:26:49,121 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70