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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:05,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:05,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:05,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:05,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:05,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:05,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:05,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:05,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:05,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:05,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:05,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:05,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:05,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:05,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:05,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:05,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:05,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:05,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:05,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:05,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:05,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:05,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:05,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:05,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:05,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:05,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:05,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:05,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:05,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:05,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:05,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:05,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:05,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:05,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:05,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:05,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:45:05,756 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:05,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:05,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:05,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:05,760 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:05,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:05,761 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:05,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:05,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:05,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:05,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:05,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:05,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:05,762 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:05,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:05,763 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:05,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:05,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:05,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:05,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:05,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:05,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:05,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:05,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:05,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:05,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:05,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:05,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:05,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:06,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:06,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:06,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:06,034 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:06,034 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:06,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:06,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce0f8424/633120094faa4f57872645d70d61701d/FLAGe20207ad1 [2019-10-13 19:45:06,691 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:06,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:06,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce0f8424/633120094faa4f57872645d70d61701d/FLAGe20207ad1 [2019-10-13 19:45:06,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce0f8424/633120094faa4f57872645d70d61701d [2019-10-13 19:45:06,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:06,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:06,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:06,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:06,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:06,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4262f24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06, skipping insertion in model container [2019-10-13 19:45:06,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:07,062 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:07,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:07,658 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:08,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:08,085 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:08,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08 WrapperNode [2019-10-13 19:45:08,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:08,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:08,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:08,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:08,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:08,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:08,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:08,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:08,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:09,826 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:09,826 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:09,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:09 BoogieIcfgContainer [2019-10-13 19:45:09,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:09,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:09,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:09,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:09,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:06" (1/3) ... [2019-10-13 19:45:09,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577d270c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:09, skipping insertion in model container [2019-10-13 19:45:09,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (2/3) ... [2019-10-13 19:45:09,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577d270c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:09, skipping insertion in model container [2019-10-13 19:45:09,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:09" (3/3) ... [2019-10-13 19:45:09,837 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:09,848 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:09,875 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:45:09,891 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:45:09,935 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:09,936 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:09,936 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:09,936 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:09,936 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:09,936 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:09,937 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:09,937 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:09,974 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2019-10-13 19:45:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 19:45:10,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:10,004 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:10,007 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash -378109419, now seen corresponding path program 1 times [2019-10-13 19:45:10,022 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:10,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854779935] [2019-10-13 19:45:10,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,110 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:11,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854779935] [2019-10-13 19:45:11,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:11,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:11,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731961155] [2019-10-13 19:45:11,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:11,199 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:11,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:11,215 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 5 states. [2019-10-13 19:45:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:14,868 INFO L93 Difference]: Finished difference Result 1140 states and 2047 transitions. [2019-10-13 19:45:14,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:45:14,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-13 19:45:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:14,892 INFO L225 Difference]: With dead ends: 1140 [2019-10-13 19:45:14,892 INFO L226 Difference]: Without dead ends: 752 [2019-10-13 19:45:14,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-13 19:45:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 726. [2019-10-13 19:45:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-10-13 19:45:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1035 transitions. [2019-10-13 19:45:15,002 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1035 transitions. Word has length 145 [2019-10-13 19:45:15,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:15,002 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 1035 transitions. [2019-10-13 19:45:15,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1035 transitions. [2019-10-13 19:45:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:45:15,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:15,006 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:15,006 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash 785847517, now seen corresponding path program 1 times [2019-10-13 19:45:15,007 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:15,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434515432] [2019-10-13 19:45:15,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:15,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:15,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:15,354 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:15,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434515432] [2019-10-13 19:45:15,388 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:15,388 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:15,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843213095] [2019-10-13 19:45:15,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:15,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:15,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:15,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:15,391 INFO L87 Difference]: Start difference. First operand 726 states and 1035 transitions. Second operand 4 states. [2019-10-13 19:45:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:17,133 INFO L93 Difference]: Finished difference Result 2132 states and 3035 transitions. [2019-10-13 19:45:17,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:17,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-13 19:45:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:17,142 INFO L225 Difference]: With dead ends: 2132 [2019-10-13 19:45:17,142 INFO L226 Difference]: Without dead ends: 1438 [2019-10-13 19:45:17,147 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2019-10-13 19:45:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 728. [2019-10-13 19:45:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2019-10-13 19:45:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1037 transitions. [2019-10-13 19:45:17,229 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1037 transitions. Word has length 146 [2019-10-13 19:45:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:17,231 INFO L462 AbstractCegarLoop]: Abstraction has 728 states and 1037 transitions. [2019-10-13 19:45:17,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1037 transitions. [2019-10-13 19:45:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:17,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:17,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:17,236 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash 615628916, now seen corresponding path program 1 times [2019-10-13 19:45:17,237 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:17,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524434445] [2019-10-13 19:45:17,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:17,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:17,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:17,793 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:17,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524434445] [2019-10-13 19:45:17,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:17,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:17,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113454516] [2019-10-13 19:45:17,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:17,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:17,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:17,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:17,889 INFO L87 Difference]: Start difference. First operand 728 states and 1037 transitions. Second operand 5 states. [2019-10-13 19:45:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:19,341 INFO L93 Difference]: Finished difference Result 1438 states and 2049 transitions. [2019-10-13 19:45:19,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:19,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-13 19:45:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:19,348 INFO L225 Difference]: With dead ends: 1438 [2019-10-13 19:45:19,348 INFO L226 Difference]: Without dead ends: 728 [2019-10-13 19:45:19,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2019-10-13 19:45:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 727. [2019-10-13 19:45:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-10-13 19:45:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1034 transitions. [2019-10-13 19:45:19,381 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1034 transitions. Word has length 147 [2019-10-13 19:45:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:19,382 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1034 transitions. [2019-10-13 19:45:19,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1034 transitions. [2019-10-13 19:45:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:19,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:19,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:19,384 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:19,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1544797217, now seen corresponding path program 1 times [2019-10-13 19:45:19,385 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:19,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647421493] [2019-10-13 19:45:19,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:19,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:19,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:19,754 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:19,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647421493] [2019-10-13 19:45:19,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:19,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:19,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840865662] [2019-10-13 19:45:19,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:19,901 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:19,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:19,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:19,902 INFO L87 Difference]: Start difference. First operand 727 states and 1034 transitions. Second operand 4 states. [2019-10-13 19:45:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:22,437 INFO L93 Difference]: Finished difference Result 1957 states and 2793 transitions. [2019-10-13 19:45:22,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:22,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-13 19:45:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:22,450 INFO L225 Difference]: With dead ends: 1957 [2019-10-13 19:45:22,450 INFO L226 Difference]: Without dead ends: 1409 [2019-10-13 19:45:22,452 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2019-10-13 19:45:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1383. [2019-10-13 19:45:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2019-10-13 19:45:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1959 transitions. [2019-10-13 19:45:22,508 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1959 transitions. Word has length 147 [2019-10-13 19:45:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:22,508 INFO L462 AbstractCegarLoop]: Abstraction has 1383 states and 1959 transitions. [2019-10-13 19:45:22,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1959 transitions. [2019-10-13 19:45:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:22,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:22,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:22,513 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:22,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:22,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1137007516, now seen corresponding path program 1 times [2019-10-13 19:45:22,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:22,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917994280] [2019-10-13 19:45:22,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:22,954 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:23,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917994280] [2019-10-13 19:45:23,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:23,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:23,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784785683] [2019-10-13 19:45:23,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:23,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:23,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:23,031 INFO L87 Difference]: Start difference. First operand 1383 states and 1959 transitions. Second operand 5 states. [2019-10-13 19:45:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:24,538 INFO L93 Difference]: Finished difference Result 2275 states and 3231 transitions. [2019-10-13 19:45:24,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:24,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-13 19:45:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:24,548 INFO L225 Difference]: With dead ends: 2275 [2019-10-13 19:45:24,549 INFO L226 Difference]: Without dead ends: 1061 [2019-10-13 19:45:24,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2019-10-13 19:45:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061. [2019-10-13 19:45:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2019-10-13 19:45:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1494 transitions. [2019-10-13 19:45:24,591 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1494 transitions. Word has length 147 [2019-10-13 19:45:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:24,592 INFO L462 AbstractCegarLoop]: Abstraction has 1061 states and 1494 transitions. [2019-10-13 19:45:24,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1494 transitions. [2019-10-13 19:45:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:45:24,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:24,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:24,596 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1811444338, now seen corresponding path program 1 times [2019-10-13 19:45:24,596 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:24,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94238983] [2019-10-13 19:45:24,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:24,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:24,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:24,961 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:25,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94238983] [2019-10-13 19:45:25,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:25,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:25,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628835189] [2019-10-13 19:45:25,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:25,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:25,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:25,023 INFO L87 Difference]: Start difference. First operand 1061 states and 1494 transitions. Second operand 4 states. [2019-10-13 19:45:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:26,844 INFO L93 Difference]: Finished difference Result 2751 states and 3920 transitions. [2019-10-13 19:45:26,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:26,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-13 19:45:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:26,855 INFO L225 Difference]: With dead ends: 2751 [2019-10-13 19:45:26,855 INFO L226 Difference]: Without dead ends: 1942 [2019-10-13 19:45:26,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2019-10-13 19:45:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1916. [2019-10-13 19:45:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2019-10-13 19:45:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2713 transitions. [2019-10-13 19:45:26,928 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2713 transitions. Word has length 153 [2019-10-13 19:45:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:26,928 INFO L462 AbstractCegarLoop]: Abstraction has 1916 states and 2713 transitions. [2019-10-13 19:45:26,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2713 transitions. [2019-10-13 19:45:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:45:26,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:26,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:26,933 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:26,933 INFO L82 PathProgramCache]: Analyzing trace with hash 404324973, now seen corresponding path program 1 times [2019-10-13 19:45:26,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:26,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028702297] [2019-10-13 19:45:26,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,631 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:27,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028702297] [2019-10-13 19:45:27,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:27,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:45:27,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808357121] [2019-10-13 19:45:27,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:45:27,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:27,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:45:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:45:27,733 INFO L87 Difference]: Start difference. First operand 1916 states and 2713 transitions. Second operand 14 states. [2019-10-13 19:45:28,060 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:45:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:31,656 INFO L93 Difference]: Finished difference Result 7242 states and 11196 transitions. [2019-10-13 19:45:31,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:45:31,657 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 153 [2019-10-13 19:45:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:31,680 INFO L225 Difference]: With dead ends: 7242 [2019-10-13 19:45:31,680 INFO L226 Difference]: Without dead ends: 5602 [2019-10-13 19:45:31,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:45:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2019-10-13 19:45:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3296. [2019-10-13 19:45:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2019-10-13 19:45:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4983 transitions. [2019-10-13 19:45:31,883 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4983 transitions. Word has length 153 [2019-10-13 19:45:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:31,884 INFO L462 AbstractCegarLoop]: Abstraction has 3296 states and 4983 transitions. [2019-10-13 19:45:31,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:45:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4983 transitions. [2019-10-13 19:45:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:45:31,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:31,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:31,888 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:31,889 INFO L82 PathProgramCache]: Analyzing trace with hash -685965993, now seen corresponding path program 1 times [2019-10-13 19:45:31,889 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:31,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930183059] [2019-10-13 19:45:31,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:31,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:31,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:32,313 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:32,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930183059] [2019-10-13 19:45:32,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:32,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:45:32,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425482530] [2019-10-13 19:45:32,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:45:32,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:32,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:45:32,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:45:32,367 INFO L87 Difference]: Start difference. First operand 3296 states and 4983 transitions. Second operand 9 states. [2019-10-13 19:45:32,624 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:45:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:34,469 INFO L93 Difference]: Finished difference Result 6873 states and 10638 transitions. [2019-10-13 19:45:34,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:45:34,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2019-10-13 19:45:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:34,490 INFO L225 Difference]: With dead ends: 6873 [2019-10-13 19:45:34,490 INFO L226 Difference]: Without dead ends: 4901 [2019-10-13 19:45:34,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2019-10-13 19:45:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3984. [2019-10-13 19:45:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3984 states. [2019-10-13 19:45:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5886 transitions. [2019-10-13 19:45:34,664 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5886 transitions. Word has length 153 [2019-10-13 19:45:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:34,664 INFO L462 AbstractCegarLoop]: Abstraction has 3984 states and 5886 transitions. [2019-10-13 19:45:34,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:45:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5886 transitions. [2019-10-13 19:45:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:45:34,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:34,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:34,670 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1419709992, now seen corresponding path program 1 times [2019-10-13 19:45:34,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:34,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695785976] [2019-10-13 19:45:34,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,061 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:35,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695785976] [2019-10-13 19:45:35,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:35,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:35,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521849631] [2019-10-13 19:45:35,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:35,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:35,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:35,105 INFO L87 Difference]: Start difference. First operand 3984 states and 5886 transitions. Second operand 5 states. [2019-10-13 19:45:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:37,712 INFO L93 Difference]: Finished difference Result 10383 states and 15339 transitions. [2019-10-13 19:45:37,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:37,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-13 19:45:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:37,733 INFO L225 Difference]: With dead ends: 10383 [2019-10-13 19:45:37,734 INFO L226 Difference]: Without dead ends: 6426 [2019-10-13 19:45:37,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6426 states. [2019-10-13 19:45:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6404. [2019-10-13 19:45:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2019-10-13 19:45:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9378 transitions. [2019-10-13 19:45:38,045 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 9378 transitions. Word has length 153 [2019-10-13 19:45:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:38,045 INFO L462 AbstractCegarLoop]: Abstraction has 6404 states and 9378 transitions. [2019-10-13 19:45:38,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 9378 transitions. [2019-10-13 19:45:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:45:38,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:38,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:38,054 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1518674242, now seen corresponding path program 1 times [2019-10-13 19:45:38,054 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:38,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478867394] [2019-10-13 19:45:38,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:38,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:38,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:38,347 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:38,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478867394] [2019-10-13 19:45:38,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:38,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:38,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48885681] [2019-10-13 19:45:38,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:38,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:38,394 INFO L87 Difference]: Start difference. First operand 6404 states and 9378 transitions. Second operand 4 states. [2019-10-13 19:45:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:41,159 INFO L93 Difference]: Finished difference Result 16047 states and 23518 transitions. [2019-10-13 19:45:41,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:41,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-13 19:45:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:41,182 INFO L225 Difference]: With dead ends: 16047 [2019-10-13 19:45:41,183 INFO L226 Difference]: Without dead ends: 9996 [2019-10-13 19:45:41,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2019-10-13 19:45:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 9976. [2019-10-13 19:45:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9976 states. [2019-10-13 19:45:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9976 states to 9976 states and 14410 transitions. [2019-10-13 19:45:41,648 INFO L78 Accepts]: Start accepts. Automaton has 9976 states and 14410 transitions. Word has length 155 [2019-10-13 19:45:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:41,649 INFO L462 AbstractCegarLoop]: Abstraction has 9976 states and 14410 transitions. [2019-10-13 19:45:41,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9976 states and 14410 transitions. [2019-10-13 19:45:41,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:45:41,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:41,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:41,664 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:41,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1456809787, now seen corresponding path program 1 times [2019-10-13 19:45:41,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:41,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709516413] [2019-10-13 19:45:41,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:41,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:41,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,051 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:42,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709516413] [2019-10-13 19:45:42,097 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:42,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:42,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803248463] [2019-10-13 19:45:42,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:42,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:42,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:42,099 INFO L87 Difference]: Start difference. First operand 9976 states and 14410 transitions. Second operand 5 states. [2019-10-13 19:45:42,388 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188