/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:05:44,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:05:44,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:05:44,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:05:44,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:05:44,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:05:44,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:05:44,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:05:44,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:05:44,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:05:44,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:05:44,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:05:44,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:05:44,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:05:44,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:05:44,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:05:44,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:05:44,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:05:44,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:05:44,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:05:44,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:05:44,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:05:44,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:05:44,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:05:44,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:05:44,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:05:44,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:05:44,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:05:44,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:05:44,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:05:44,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:05:44,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:05:44,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:05:44,579 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:05:44,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:05:44,580 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:05:44,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:05:44,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:05:44,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:05:44,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:05:44,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:05:44,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:05:44,582 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:05:44,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:05:44,583 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:05:44,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:05:44,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:05:44,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:05:44,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:05:44,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:05:44,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:05:44,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:05:44,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:05:44,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:05:44,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:05:44,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:05:44,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:05:44,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 01:05:44,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:05:44,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:05:44,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:05:44,894 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:05:44,894 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:05:44,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-07 01:05:44,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf9bf4fe/cdf420f874484b94b1ccecfbc1857f0c/FLAG63eb8c1bf [2019-11-07 01:05:45,499 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:05:45,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-07 01:05:45,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf9bf4fe/cdf420f874484b94b1ccecfbc1857f0c/FLAG63eb8c1bf [2019-11-07 01:05:45,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf9bf4fe/cdf420f874484b94b1ccecfbc1857f0c [2019-11-07 01:05:45,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:05:45,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:05:45,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:05:45,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:05:45,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:05:45,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:45" (1/1) ... [2019-11-07 01:05:45,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61be4028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:45, skipping insertion in model container [2019-11-07 01:05:45,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:45" (1/1) ... [2019-11-07 01:05:45,849 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:05:45,916 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:05:46,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:05:46,321 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:05:46,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:05:46,439 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:05:46,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46 WrapperNode [2019-11-07 01:05:46,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:05:46,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:05:46,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:05:46,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:05:46,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... [2019-11-07 01:05:46,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:05:46,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:05:46,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:05:46,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:05:46,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:05:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:05:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:05:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:05:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:05:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 01:05:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 01:05:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 01:05:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 01:05:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 01:05:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 01:05:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 01:05:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:05:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:05:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:05:47,341 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:05:47,342 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 01:05:47,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:47 BoogieIcfgContainer [2019-11-07 01:05:47,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:05:47,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:05:47,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:05:47,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:05:47,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:45" (1/3) ... [2019-11-07 01:05:47,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500e5ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:47, skipping insertion in model container [2019-11-07 01:05:47,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:46" (2/3) ... [2019-11-07 01:05:47,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500e5ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:47, skipping insertion in model container [2019-11-07 01:05:47,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:47" (3/3) ... [2019-11-07 01:05:47,352 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-07 01:05:47,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:05:47,372 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:05:47,384 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:05:47,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:05:47,424 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:05:47,424 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:05:47,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:05:47,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:05:47,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:05:47,424 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:05:47,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:05:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2019-11-07 01:05:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 01:05:47,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:47,455 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:47,456 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:47,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash -276696918, now seen corresponding path program 1 times [2019-11-07 01:05:47,469 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:47,469 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207682098] [2019-11-07 01:05:47,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:47,923 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207682098] [2019-11-07 01:05:47,924 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:47,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:05:47,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568844014] [2019-11-07 01:05:47,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:05:47,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:47,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:05:47,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:05:47,953 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2019-11-07 01:05:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:48,403 INFO L93 Difference]: Finished difference Result 721 states and 1142 transitions. [2019-11-07 01:05:48,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 01:05:48,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-11-07 01:05:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:48,437 INFO L225 Difference]: With dead ends: 721 [2019-11-07 01:05:48,438 INFO L226 Difference]: Without dead ends: 630 [2019-11-07 01:05:48,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-07 01:05:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-11-07 01:05:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 423. [2019-11-07 01:05:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-07 01:05:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 647 transitions. [2019-11-07 01:05:48,548 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 647 transitions. Word has length 52 [2019-11-07 01:05:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:48,549 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 647 transitions. [2019-11-07 01:05:48,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:05:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 647 transitions. [2019-11-07 01:05:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 01:05:48,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:48,552 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:48,552 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1087729035, now seen corresponding path program 1 times [2019-11-07 01:05:48,553 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:48,553 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943707299] [2019-11-07 01:05:48,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:48,679 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943707299] [2019-11-07 01:05:48,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:48,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:05:48,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624227694] [2019-11-07 01:05:48,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:05:48,682 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:05:48,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:05:48,683 INFO L87 Difference]: Start difference. First operand 423 states and 647 transitions. Second operand 3 states. [2019-11-07 01:05:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:48,755 INFO L93 Difference]: Finished difference Result 1104 states and 1713 transitions. [2019-11-07 01:05:48,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:05:48,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-11-07 01:05:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:48,762 INFO L225 Difference]: With dead ends: 1104 [2019-11-07 01:05:48,762 INFO L226 Difference]: Without dead ends: 748 [2019-11-07 01:05:48,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:05:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-07 01:05:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2019-11-07 01:05:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-11-07 01:05:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1138 transitions. [2019-11-07 01:05:48,828 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1138 transitions. Word has length 55 [2019-11-07 01:05:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:48,829 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1138 transitions. [2019-11-07 01:05:48,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:05:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1138 transitions. [2019-11-07 01:05:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 01:05:48,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:48,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:48,844 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash 917757431, now seen corresponding path program 1 times [2019-11-07 01:05:48,846 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:48,847 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679472105] [2019-11-07 01:05:48,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:49,021 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679472105] [2019-11-07 01:05:49,022 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:49,022 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:05:49,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016776504] [2019-11-07 01:05:49,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:05:49,023 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:49,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:05:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:05:49,027 INFO L87 Difference]: Start difference. First operand 746 states and 1138 transitions. Second operand 3 states. [2019-11-07 01:05:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:49,161 INFO L93 Difference]: Finished difference Result 2006 states and 3079 transitions. [2019-11-07 01:05:49,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:05:49,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-11-07 01:05:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:49,170 INFO L225 Difference]: With dead ends: 2006 [2019-11-07 01:05:49,170 INFO L226 Difference]: Without dead ends: 1335 [2019-11-07 01:05:49,172 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:05:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2019-11-07 01:05:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1333. [2019-11-07 01:05:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-11-07 01:05:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2001 transitions. [2019-11-07 01:05:49,243 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2001 transitions. Word has length 55 [2019-11-07 01:05:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:49,243 INFO L462 AbstractCegarLoop]: Abstraction has 1333 states and 2001 transitions. [2019-11-07 01:05:49,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:05:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2001 transitions. [2019-11-07 01:05:49,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 01:05:49,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:49,245 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:49,245 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash -41555275, now seen corresponding path program 1 times [2019-11-07 01:05:49,246 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:49,246 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449506447] [2019-11-07 01:05:49,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:49,418 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449506447] [2019-11-07 01:05:49,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:49,419 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 01:05:49,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809350472] [2019-11-07 01:05:49,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 01:05:49,420 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:49,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 01:05:49,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:05:49,420 INFO L87 Difference]: Start difference. First operand 1333 states and 2001 transitions. Second operand 10 states. [2019-11-07 01:05:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:51,452 INFO L93 Difference]: Finished difference Result 7842 states and 11792 transitions. [2019-11-07 01:05:51,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 01:05:51,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2019-11-07 01:05:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:51,505 INFO L225 Difference]: With dead ends: 7842 [2019-11-07 01:05:51,506 INFO L226 Difference]: Without dead ends: 7341 [2019-11-07 01:05:51,512 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2019-11-07 01:05:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2019-11-07 01:05:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 1358. [2019-11-07 01:05:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-11-07 01:05:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2033 transitions. [2019-11-07 01:05:51,829 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2033 transitions. Word has length 56 [2019-11-07 01:05:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:51,830 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 2033 transitions. [2019-11-07 01:05:51,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 01:05:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2033 transitions. [2019-11-07 01:05:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:05:51,833 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:51,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:51,833 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash -742667424, now seen corresponding path program 1 times [2019-11-07 01:05:51,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:51,835 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113983469] [2019-11-07 01:05:51,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:52,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113983469] [2019-11-07 01:05:52,011 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:52,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 01:05:52,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199501676] [2019-11-07 01:05:52,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 01:05:52,013 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:52,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 01:05:52,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:05:52,015 INFO L87 Difference]: Start difference. First operand 1358 states and 2033 transitions. Second operand 7 states. [2019-11-07 01:05:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:53,017 INFO L93 Difference]: Finished difference Result 5747 states and 8758 transitions. [2019-11-07 01:05:53,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 01:05:53,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-11-07 01:05:53,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:53,045 INFO L225 Difference]: With dead ends: 5747 [2019-11-07 01:05:53,045 INFO L226 Difference]: Without dead ends: 5246 [2019-11-07 01:05:53,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-11-07 01:05:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2019-11-07 01:05:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 1339. [2019-11-07 01:05:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2019-11-07 01:05:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2009 transitions. [2019-11-07 01:05:53,253 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2009 transitions. Word has length 57 [2019-11-07 01:05:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:53,254 INFO L462 AbstractCegarLoop]: Abstraction has 1339 states and 2009 transitions. [2019-11-07 01:05:53,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 01:05:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2009 transitions. [2019-11-07 01:05:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:05:53,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:53,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:53,255 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:53,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1896016447, now seen corresponding path program 1 times [2019-11-07 01:05:53,256 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:53,256 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102209286] [2019-11-07 01:05:53,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:53,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102209286] [2019-11-07 01:05:53,370 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:53,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:05:53,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426499639] [2019-11-07 01:05:53,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:05:53,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:05:53,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:05:53,372 INFO L87 Difference]: Start difference. First operand 1339 states and 2009 transitions. Second operand 9 states. [2019-11-07 01:05:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:55,665 INFO L93 Difference]: Finished difference Result 8481 states and 12775 transitions. [2019-11-07 01:05:55,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 01:05:55,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-07 01:05:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:55,705 INFO L225 Difference]: With dead ends: 8481 [2019-11-07 01:05:55,705 INFO L226 Difference]: Without dead ends: 7351 [2019-11-07 01:05:55,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2019-11-07 01:05:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2019-11-07 01:05:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 1378. [2019-11-07 01:05:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-11-07 01:05:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2060 transitions. [2019-11-07 01:05:55,962 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2060 transitions. Word has length 57 [2019-11-07 01:05:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:55,964 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 2060 transitions. [2019-11-07 01:05:55,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:05:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2060 transitions. [2019-11-07 01:05:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:05:55,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:55,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:55,970 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1439125625, now seen corresponding path program 1 times [2019-11-07 01:05:55,979 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:55,979 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711193793] [2019-11-07 01:05:55,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:56,100 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711193793] [2019-11-07 01:05:56,100 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:56,100 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 01:05:56,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815697073] [2019-11-07 01:05:56,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 01:05:56,101 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 01:05:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:05:56,102 INFO L87 Difference]: Start difference. First operand 1378 states and 2060 transitions. Second operand 7 states. [2019-11-07 01:05:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:57,070 INFO L93 Difference]: Finished difference Result 5650 states and 8490 transitions. [2019-11-07 01:05:57,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 01:05:57,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-11-07 01:05:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:57,091 INFO L225 Difference]: With dead ends: 5650 [2019-11-07 01:05:57,092 INFO L226 Difference]: Without dead ends: 4520 [2019-11-07 01:05:57,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-11-07 01:05:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2019-11-07 01:05:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 1359. [2019-11-07 01:05:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-11-07 01:05:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 2033 transitions. [2019-11-07 01:05:57,348 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 2033 transitions. Word has length 58 [2019-11-07 01:05:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:57,348 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 2033 transitions. [2019-11-07 01:05:57,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 01:05:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 2033 transitions. [2019-11-07 01:05:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:05:57,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:57,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:57,350 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:57,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1839206206, now seen corresponding path program 1 times [2019-11-07 01:05:57,351 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:57,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380916619] [2019-11-07 01:05:57,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:57,515 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380916619] [2019-11-07 01:05:57,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:57,516 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:05:57,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599419491] [2019-11-07 01:05:57,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:05:57,517 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:05:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:05:57,518 INFO L87 Difference]: Start difference. First operand 1359 states and 2033 transitions. Second operand 9 states. [2019-11-07 01:05:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:59,265 INFO L93 Difference]: Finished difference Result 7327 states and 11032 transitions. [2019-11-07 01:05:59,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:05:59,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2019-11-07 01:05:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:59,280 INFO L225 Difference]: With dead ends: 7327 [2019-11-07 01:05:59,280 INFO L226 Difference]: Without dead ends: 6095 [2019-11-07 01:05:59,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-11-07 01:05:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2019-11-07 01:05:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 3782. [2019-11-07 01:05:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3782 states. [2019-11-07 01:05:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5672 transitions. [2019-11-07 01:05:59,711 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5672 transitions. Word has length 58 [2019-11-07 01:05:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:59,711 INFO L462 AbstractCegarLoop]: Abstraction has 3782 states and 5672 transitions. [2019-11-07 01:05:59,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:05:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5672 transitions. [2019-11-07 01:05:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:05:59,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:59,714 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:05:59,714 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1369199573, now seen corresponding path program 1 times [2019-11-07 01:05:59,715 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:59,715 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504087336] [2019-11-07 01:05:59,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:05:59,825 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504087336] [2019-11-07 01:05:59,826 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:59,826 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:05:59,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094667698] [2019-11-07 01:05:59,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:05:59,828 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:59,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:05:59,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:05:59,829 INFO L87 Difference]: Start difference. First operand 3782 states and 5672 transitions. Second operand 9 states. [2019-11-07 01:06:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:02,212 INFO L93 Difference]: Finished difference Result 19307 states and 28995 transitions. [2019-11-07 01:06:02,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:06:02,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2019-11-07 01:06:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:02,248 INFO L225 Difference]: With dead ends: 19307 [2019-11-07 01:06:02,248 INFO L226 Difference]: Without dead ends: 15977 [2019-11-07 01:06:02,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-11-07 01:06:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15977 states. [2019-11-07 01:06:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15977 to 11695. [2019-11-07 01:06:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11695 states. [2019-11-07 01:06:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11695 states to 11695 states and 17676 transitions. [2019-11-07 01:06:03,614 INFO L78 Accepts]: Start accepts. Automaton has 11695 states and 17676 transitions. Word has length 58 [2019-11-07 01:06:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:03,614 INFO L462 AbstractCegarLoop]: Abstraction has 11695 states and 17676 transitions. [2019-11-07 01:06:03,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:06:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 11695 states and 17676 transitions. [2019-11-07 01:06:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:03,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:03,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:06:03,618 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1177047496, now seen corresponding path program 1 times [2019-11-07 01:06:03,619 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:03,619 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123012401] [2019-11-07 01:06:03,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:06:03,690 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123012401] [2019-11-07 01:06:03,690 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:03,691 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:06:03,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434856118] [2019-11-07 01:06:03,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:06:03,692 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:03,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:06:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:06:03,692 INFO L87 Difference]: Start difference. First operand 11695 states and 17676 transitions. Second operand 6 states. [2019-11-07 01:06:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:05,540 INFO L93 Difference]: Finished difference Result 26750 states and 40687 transitions. [2019-11-07 01:06:05,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:05,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2019-11-07 01:06:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:05,577 INFO L225 Difference]: With dead ends: 26750 [2019-11-07 01:06:05,577 INFO L226 Difference]: Without dead ends: 16014 [2019-11-07 01:06:05,600 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:06:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16014 states. [2019-11-07 01:06:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16014 to 9824. [2019-11-07 01:06:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9824 states. [2019-11-07 01:06:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9824 states to 9824 states and 14759 transitions. [2019-11-07 01:06:06,796 INFO L78 Accepts]: Start accepts. Automaton has 9824 states and 14759 transitions. Word has length 59 [2019-11-07 01:06:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:06,796 INFO L462 AbstractCegarLoop]: Abstraction has 9824 states and 14759 transitions. [2019-11-07 01:06:06,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:06:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9824 states and 14759 transitions. [2019-11-07 01:06:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:06,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:06,799 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:06:06,799 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:06,799 INFO L82 PathProgramCache]: Analyzing trace with hash -90485979, now seen corresponding path program 1 times [2019-11-07 01:06:06,799 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:06,800 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301471662] [2019-11-07 01:06:06,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:06:06,873 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301471662] [2019-11-07 01:06:06,874 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:06,874 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:06:06,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037914386] [2019-11-07 01:06:06,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:06:06,875 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:06,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:06:06,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:06:06,875 INFO L87 Difference]: Start difference. First operand 9824 states and 14759 transitions. Second operand 6 states. [2019-11-07 01:06:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:08,530 INFO L93 Difference]: Finished difference Result 20559 states and 30871 transitions. [2019-11-07 01:06:08,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:08,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2019-11-07 01:06:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:08,553 INFO L225 Difference]: With dead ends: 20559 [2019-11-07 01:06:08,553 INFO L226 Difference]: Without dead ends: 11316 [2019-11-07 01:06:08,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:06:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2019-11-07 01:06:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 7633. [2019-11-07 01:06:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7633 states. [2019-11-07 01:06:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11363 transitions. [2019-11-07 01:06:09,658 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11363 transitions. Word has length 59 [2019-11-07 01:06:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:09,658 INFO L462 AbstractCegarLoop]: Abstraction has 7633 states and 11363 transitions. [2019-11-07 01:06:09,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:06:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11363 transitions. [2019-11-07 01:06:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:09,660 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:09,660 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:06:09,660 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:09,660 INFO L82 PathProgramCache]: Analyzing trace with hash -226647092, now seen corresponding path program 1 times [2019-11-07 01:06:09,660 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:09,660 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514920888] [2019-11-07 01:06:09,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:06:09,711 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514920888] [2019-11-07 01:06:09,711 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:09,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:06:09,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132498698] [2019-11-07 01:06:09,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:06:09,712 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:09,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:06:09,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:06:09,712 INFO L87 Difference]: Start difference. First operand 7633 states and 11363 transitions. Second operand 5 states. [2019-11-07 01:06:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:11,654 INFO L93 Difference]: Finished difference Result 18447 states and 27375 transitions. [2019-11-07 01:06:11,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:11,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-11-07 01:06:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:11,675 INFO L225 Difference]: With dead ends: 18447 [2019-11-07 01:06:11,676 INFO L226 Difference]: Without dead ends: 10894 [2019-11-07 01:06:11,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:06:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10894 states. [2019-11-07 01:06:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10894 to 7633. [2019-11-07 01:06:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7633 states. [2019-11-07 01:06:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11259 transitions. [2019-11-07 01:06:13,465 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11259 transitions. Word has length 59 [2019-11-07 01:06:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:13,466 INFO L462 AbstractCegarLoop]: Abstraction has 7633 states and 11259 transitions. [2019-11-07 01:06:13,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:06:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11259 transitions. [2019-11-07 01:06:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:06:13,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:13,467 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:06:13,468 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash 758768658, now seen corresponding path program 1 times [2019-11-07 01:06:13,468 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:13,468 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968640414] [2019-11-07 01:06:13,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:06:13,550 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968640414] [2019-11-07 01:06:13,551 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:13,551 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:06:13,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850975206] [2019-11-07 01:06:13,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:06:13,552 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:13,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:06:13,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:06:13,553 INFO L87 Difference]: Start difference. First operand 7633 states and 11259 transitions. Second operand 5 states. [2019-11-07 01:06:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:16,049 INFO L93 Difference]: Finished difference Result 20122 states and 29836 transitions. [2019-11-07 01:06:16,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:16,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 01:06:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:16,077 INFO L225 Difference]: With dead ends: 20122 [2019-11-07 01:06:16,077 INFO L226 Difference]: Without dead ends: 16178 [2019-11-07 01:06:16,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:06:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16178 states. [2019-11-07 01:06:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16178 to 9877. [2019-11-07 01:06:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9877 states. [2019-11-07 01:06:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 14629 transitions. [2019-11-07 01:06:17,410 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 14629 transitions. Word has length 60 [2019-11-07 01:06:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:17,410 INFO L462 AbstractCegarLoop]: Abstraction has 9877 states and 14629 transitions. [2019-11-07 01:06:17,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:06:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 14629 transitions. [2019-11-07 01:06:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:06:17,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:17,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:06:17,412 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2035448048, now seen corresponding path program 1 times [2019-11-07 01:06:17,412 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:17,413 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874765559] [2019-11-07 01:06:17,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:06:17,482 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874765559] [2019-11-07 01:06:17,482 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:17,482 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:06:17,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707584374] [2019-11-07 01:06:17,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:06:17,483 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:06:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:06:17,483 INFO L87 Difference]: Start difference. First operand 9877 states and 14629 transitions. Second operand 5 states. [2019-11-07 01:06:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:19,885 INFO L93 Difference]: Finished difference Result 21379 states and 31737 transitions. [2019-11-07 01:06:19,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:19,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 01:06:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:19,905 INFO L225 Difference]: With dead ends: 21379 [2019-11-07 01:06:19,906 INFO L226 Difference]: Without dead ends: 17435 [2019-11-07 01:06:19,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:06:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17435 states.