/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:06:33,098 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 01:06:33,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:06:33,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:06:33,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:06:33,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:06:33,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:06:33,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:06:33,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:06:33,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:06:33,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:06:33,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:06:33,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:06:33,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:06:33,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:06:33,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:06:33,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:06:33,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:06:33,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:06:33,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:06:33,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:06:33,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:06:33,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:06:33,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:06:33,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:06:33,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:06:33,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:06:33,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:06:33,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:06:33,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:06:33,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:06:33,257 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:06:33,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:06:33,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:06:33,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:06:33,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:06:33,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:06:33,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:06:33,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:06:33,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:06:33,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:06:33,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:06:33,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:06:33,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:06:33,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:06:33,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:06:33,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:06:33,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:06:33,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:06:33,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:06:33,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:06:33,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:06:33,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:06:33,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:06:33,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:06:33,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:06:33,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:06:33,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:06:33,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:06:33,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:06:33,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:06:33,587 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:06:33,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 01:06:33,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d7d9e4e/041a8a4025f545cdb6129d317e82a9ca/FLAG7b1c7cfb7 [2020-08-19 01:06:34,090 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:06:34,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 01:06:34,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d7d9e4e/041a8a4025f545cdb6129d317e82a9ca/FLAG7b1c7cfb7 [2020-08-19 01:06:34,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d7d9e4e/041a8a4025f545cdb6129d317e82a9ca [2020-08-19 01:06:34,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:06:34,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:06:34,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:34,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:06:34,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:06:34,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3eedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34, skipping insertion in model container [2020-08-19 01:06:34,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:06:34,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:06:34,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:34,715 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:06:34,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:34,745 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:06:34,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34 WrapperNode [2020-08-19 01:06:34,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:34,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:06:34,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:06:34,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:06:34,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... [2020-08-19 01:06:34,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:06:34,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:06:34,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:06:34,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:06:34,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:06:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:06:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:06:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-19 01:06:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:06:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:06:35,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:06:35,112 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:06:35,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:35 BoogieIcfgContainer [2020-08-19 01:06:35,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:06:35,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:06:35,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:06:35,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:06:35,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:06:34" (1/3) ... [2020-08-19 01:06:35,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108939fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:35, skipping insertion in model container [2020-08-19 01:06:35,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:34" (2/3) ... [2020-08-19 01:06:35,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108939fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:35, skipping insertion in model container [2020-08-19 01:06:35,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:35" (3/3) ... [2020-08-19 01:06:35,124 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-08-19 01:06:35,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:06:35,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:06:35,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:06:35,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:06:35,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:06:35,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:06:35,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:06:35,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:06:35,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:06:35,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:06:35,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:06:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-19 01:06:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 01:06:35,255 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:35,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:35,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-08-19 01:06:35,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:35,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403573532] [2020-08-19 01:06:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:06:35,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403573532] [2020-08-19 01:06:35,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:06:35,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:06:35,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954544598] [2020-08-19 01:06:35,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:06:35,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:35,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:06:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:06:35,524 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-19 01:06:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:35,659 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-19 01:06:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:06:35,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 01:06:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:35,677 INFO L225 Difference]: With dead ends: 36 [2020-08-19 01:06:35,677 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 01:06:35,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:06:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 01:06:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-19 01:06:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 01:06:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-08-19 01:06:35,741 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-08-19 01:06:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:35,741 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-08-19 01:06:35,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:06:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-08-19 01:06:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:06:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:35,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:35,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:06:35,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-08-19 01:06:35,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:35,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937853582] [2020-08-19 01:06:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:06:35,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937853582] [2020-08-19 01:06:35,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:06:35,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:06:35,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073982959] [2020-08-19 01:06:35,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:06:35,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:06:35,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:06:35,823 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-08-19 01:06:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:35,863 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-08-19 01:06:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:06:35,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-19 01:06:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:35,865 INFO L225 Difference]: With dead ends: 32 [2020-08-19 01:06:35,865 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 01:06:35,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:06:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 01:06:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-08-19 01:06:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 01:06:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-19 01:06:35,875 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-19 01:06:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:35,876 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-19 01:06:35,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:06:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-19 01:06:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:06:35,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:35,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:35,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:06:35,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:35,879 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-08-19 01:06:35,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:35,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714108436] [2020-08-19 01:06:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:06:36,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714108436] [2020-08-19 01:06:36,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:36,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 01:06:36,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356097683] [2020-08-19 01:06:36,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:06:36,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:36,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:06:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:06:36,010 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-19 01:06:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:36,126 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-19 01:06:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:06:36,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 01:06:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:36,128 INFO L225 Difference]: With dead ends: 29 [2020-08-19 01:06:36,128 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 01:06:36,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:06:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 01:06:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 01:06:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 01:06:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-08-19 01:06:36,138 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2020-08-19 01:06:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:36,138 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-08-19 01:06:36,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:06:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-08-19 01:06:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 01:06:36,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:36,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:36,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:06:36,141 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-08-19 01:06:36,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:36,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348294012] [2020-08-19 01:06:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 01:06:36,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348294012] [2020-08-19 01:06:36,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:36,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 01:06:36,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283897076] [2020-08-19 01:06:36,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:06:36,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:36,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:06:36,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:06:36,289 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 7 states. [2020-08-19 01:06:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:36,437 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-08-19 01:06:36,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:06:36,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 01:06:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:36,440 INFO L225 Difference]: With dead ends: 43 [2020-08-19 01:06:36,441 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 01:06:36,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:06:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 01:06:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 01:06:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 01:06:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-08-19 01:06:36,452 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 27 [2020-08-19 01:06:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:36,453 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-08-19 01:06:36,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:06:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-08-19 01:06:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 01:06:36,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:36,455 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:36,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:06:36,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-08-19 01:06:36,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:36,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467006578] [2020-08-19 01:06:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 01:06:36,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467006578] [2020-08-19 01:06:36,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:36,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 01:06:36,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647154238] [2020-08-19 01:06:36,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:06:36,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:36,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:06:36,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:06:36,676 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-08-19 01:06:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:36,862 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-08-19 01:06:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:06:36,863 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-08-19 01:06:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:36,865 INFO L225 Difference]: With dead ends: 46 [2020-08-19 01:06:36,865 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:06:36,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:06:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:06:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 01:06:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 01:06:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2020-08-19 01:06:36,888 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 34 [2020-08-19 01:06:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:36,890 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2020-08-19 01:06:36,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:06:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2020-08-19 01:06:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 01:06:36,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:36,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:36,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:06:36,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-08-19 01:06:36,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:36,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133707776] [2020-08-19 01:06:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 01:06:37,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133707776] [2020-08-19 01:06:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:37,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:06:37,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152006607] [2020-08-19 01:06:37,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:06:37,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:37,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:06:37,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:06:37,059 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2020-08-19 01:06:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:37,239 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2020-08-19 01:06:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:06:37,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-08-19 01:06:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:37,241 INFO L225 Difference]: With dead ends: 49 [2020-08-19 01:06:37,242 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 01:06:37,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:06:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 01:06:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 01:06:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 01:06:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-08-19 01:06:37,265 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 41 [2020-08-19 01:06:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:37,266 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-08-19 01:06:37,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:06:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-08-19 01:06:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-19 01:06:37,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:37,272 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:37,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:06:37,275 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:37,276 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-08-19 01:06:37,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:37,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66589206] [2020-08-19 01:06:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-19 01:06:37,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66589206] [2020-08-19 01:06:37,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:37,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:06:37,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888625057] [2020-08-19 01:06:37,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:06:37,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:06:37,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:06:37,536 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 10 states. [2020-08-19 01:06:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:37,720 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-08-19 01:06:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:06:37,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-19 01:06:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:37,722 INFO L225 Difference]: With dead ends: 52 [2020-08-19 01:06:37,723 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:06:37,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:06:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:06:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-19 01:06:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-19 01:06:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2020-08-19 01:06:37,738 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 48 [2020-08-19 01:06:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:37,739 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2020-08-19 01:06:37,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:06:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2020-08-19 01:06:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 01:06:37,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:37,741 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:37,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:06:37,741 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:37,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-08-19 01:06:37,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:37,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868823797] [2020-08-19 01:06:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 01:06:37,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868823797] [2020-08-19 01:06:37,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:37,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:06:37,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376572538] [2020-08-19 01:06:37,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:06:37,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:06:37,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:06:37,952 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand 11 states. [2020-08-19 01:06:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:38,189 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-19 01:06:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:06:38,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-08-19 01:06:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:38,192 INFO L225 Difference]: With dead ends: 55 [2020-08-19 01:06:38,192 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 01:06:38,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:06:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 01:06:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-19 01:06:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-19 01:06:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-08-19 01:06:38,201 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 55 [2020-08-19 01:06:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:38,201 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-08-19 01:06:38,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:06:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-08-19 01:06:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 01:06:38,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:38,203 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:38,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:06:38,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:38,204 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-08-19 01:06:38,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:38,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808251130] [2020-08-19 01:06:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-08-19 01:06:38,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808251130] [2020-08-19 01:06:38,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:38,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:06:38,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426355667] [2020-08-19 01:06:38,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:06:38,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:38,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:06:38,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:06:38,510 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 12 states. [2020-08-19 01:06:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:38,712 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-08-19 01:06:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:06:38,712 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-08-19 01:06:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:38,714 INFO L225 Difference]: With dead ends: 58 [2020-08-19 01:06:38,714 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 01:06:38,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:06:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 01:06:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 01:06:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 01:06:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-08-19 01:06:38,724 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 62 [2020-08-19 01:06:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:38,724 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-08-19 01:06:38,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:06:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-08-19 01:06:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 01:06:38,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:38,726 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:38,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:06:38,726 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-08-19 01:06:38,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:38,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409651881] [2020-08-19 01:06:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:38,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-08-19 01:06:39,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409651881] [2020-08-19 01:06:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:06:39,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126985038] [2020-08-19 01:06:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:06:39,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:06:39,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:06:39,015 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 13 states. [2020-08-19 01:06:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:39,240 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-08-19 01:06:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:06:39,241 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-08-19 01:06:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:39,242 INFO L225 Difference]: With dead ends: 61 [2020-08-19 01:06:39,243 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 01:06:39,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:06:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 01:06:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-19 01:06:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-19 01:06:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-08-19 01:06:39,265 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 69 [2020-08-19 01:06:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:39,266 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-08-19 01:06:39,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:06:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-08-19 01:06:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 01:06:39,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:39,272 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:39,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:06:39,273 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-08-19 01:06:39,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:39,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837074745] [2020-08-19 01:06:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-19 01:06:39,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837074745] [2020-08-19 01:06:39,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:39,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 01:06:39,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136265686] [2020-08-19 01:06:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:06:39,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:06:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:06:39,696 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 14 states. [2020-08-19 01:06:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:39,893 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-08-19 01:06:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:06:39,893 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-08-19 01:06:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:39,895 INFO L225 Difference]: With dead ends: 64 [2020-08-19 01:06:39,895 INFO L226 Difference]: Without dead ends: 60 [2020-08-19 01:06:39,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:06:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-19 01:06:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-19 01:06:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 01:06:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-08-19 01:06:39,904 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 76 [2020-08-19 01:06:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:39,904 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-08-19 01:06:39,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:06:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-08-19 01:06:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:06:39,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:39,905 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:39,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:06:39,906 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:39,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-08-19 01:06:39,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:39,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66845818] [2020-08-19 01:06:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-08-19 01:06:40,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66845818] [2020-08-19 01:06:40,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:40,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:06:40,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605288574] [2020-08-19 01:06:40,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:06:40,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:06:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:06:40,276 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 15 states. [2020-08-19 01:06:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:40,522 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-08-19 01:06:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:06:40,522 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-08-19 01:06:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:40,524 INFO L225 Difference]: With dead ends: 67 [2020-08-19 01:06:40,524 INFO L226 Difference]: Without dead ends: 63 [2020-08-19 01:06:40,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:06:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-19 01:06:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-19 01:06:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-19 01:06:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-08-19 01:06:40,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 83 [2020-08-19 01:06:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:40,537 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-08-19 01:06:40,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:06:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-08-19 01:06:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 01:06:40,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:40,543 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:40,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:06:40,544 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:40,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-08-19 01:06:40,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:40,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614719937] [2020-08-19 01:06:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-19 01:06:41,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614719937] [2020-08-19 01:06:41,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:41,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:06:41,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510127631] [2020-08-19 01:06:41,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:06:41,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:06:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:06:41,078 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 16 states. [2020-08-19 01:06:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:41,334 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-19 01:06:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 01:06:41,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-19 01:06:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:41,335 INFO L225 Difference]: With dead ends: 70 [2020-08-19 01:06:41,336 INFO L226 Difference]: Without dead ends: 66 [2020-08-19 01:06:41,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:06:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-19 01:06:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-19 01:06:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 01:06:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-08-19 01:06:41,344 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 90 [2020-08-19 01:06:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:41,344 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-08-19 01:06:41,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:06:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-08-19 01:06:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 01:06:41,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:41,346 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:41,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:06:41,346 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-08-19 01:06:41,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:41,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261893046] [2020-08-19 01:06:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-08-19 01:06:41,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261893046] [2020-08-19 01:06:41,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:41,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 01:06:41,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158771434] [2020-08-19 01:06:41,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 01:06:41,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 01:06:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:06:41,861 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 17 states. [2020-08-19 01:06:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:42,107 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-08-19 01:06:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 01:06:42,108 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 01:06:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:42,109 INFO L225 Difference]: With dead ends: 73 [2020-08-19 01:06:42,109 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 01:06:42,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:06:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 01:06:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 01:06:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 01:06:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-08-19 01:06:42,117 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 97 [2020-08-19 01:06:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:42,118 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-08-19 01:06:42,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 01:06:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-08-19 01:06:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 01:06:42,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:42,119 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:42,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:06:42,119 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-08-19 01:06:42,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:42,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956286311] [2020-08-19 01:06:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-08-19 01:06:42,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956286311] [2020-08-19 01:06:42,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:42,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 01:06:42,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590631500] [2020-08-19 01:06:42,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 01:06:42,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:42,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 01:06:42,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:06:42,671 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 18 states. [2020-08-19 01:06:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:42,922 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-08-19 01:06:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 01:06:42,922 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-08-19 01:06:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:42,923 INFO L225 Difference]: With dead ends: 76 [2020-08-19 01:06:42,924 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 01:06:42,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:06:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 01:06:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-19 01:06:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 01:06:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-08-19 01:06:42,931 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 104 [2020-08-19 01:06:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:42,931 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-08-19 01:06:42,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 01:06:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-08-19 01:06:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-19 01:06:42,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:42,933 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:42,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:06:42,934 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-08-19 01:06:42,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:42,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177602532] [2020-08-19 01:06:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-19 01:06:43,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177602532] [2020-08-19 01:06:43,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:43,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:06:43,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687302640] [2020-08-19 01:06:43,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:06:43,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:43,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:06:43,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:06:43,550 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 19 states. [2020-08-19 01:06:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:43,833 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-19 01:06:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:06:43,834 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-08-19 01:06:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:43,835 INFO L225 Difference]: With dead ends: 79 [2020-08-19 01:06:43,836 INFO L226 Difference]: Without dead ends: 75 [2020-08-19 01:06:43,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 01:06:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-19 01:06:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-19 01:06:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 01:06:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-08-19 01:06:43,844 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 111 [2020-08-19 01:06:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:43,845 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-08-19 01:06:43,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:06:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-08-19 01:06:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 01:06:43,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:43,847 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:43,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:06:43,847 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:43,848 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-08-19 01:06:43,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:43,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022052694] [2020-08-19 01:06:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-08-19 01:06:44,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022052694] [2020-08-19 01:06:44,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:44,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 01:06:44,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152372033] [2020-08-19 01:06:44,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 01:06:44,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:44,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 01:06:44,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:06:44,479 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 20 states. [2020-08-19 01:06:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:44,763 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-08-19 01:06:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:06:44,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2020-08-19 01:06:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:44,767 INFO L225 Difference]: With dead ends: 82 [2020-08-19 01:06:44,767 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 01:06:44,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:06:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 01:06:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-19 01:06:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 01:06:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-08-19 01:06:44,777 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 118 [2020-08-19 01:06:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:44,777 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-08-19 01:06:44,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 01:06:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-08-19 01:06:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-19 01:06:44,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:44,782 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:44,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:06:44,782 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-08-19 01:06:44,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:44,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646017657] [2020-08-19 01:06:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-08-19 01:06:45,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646017657] [2020-08-19 01:06:45,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:45,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 01:06:45,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700530399] [2020-08-19 01:06:45,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 01:06:45,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 01:06:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:06:45,652 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 21 states. [2020-08-19 01:06:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:45,990 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-08-19 01:06:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 01:06:45,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 125 [2020-08-19 01:06:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:45,992 INFO L225 Difference]: With dead ends: 85 [2020-08-19 01:06:45,992 INFO L226 Difference]: Without dead ends: 81 [2020-08-19 01:06:45,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 01:06:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-19 01:06:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-19 01:06:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 01:06:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-08-19 01:06:46,005 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 125 [2020-08-19 01:06:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:46,005 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-08-19 01:06:46,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 01:06:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-08-19 01:06:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 01:06:46,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:46,007 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:46,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 01:06:46,008 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:46,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-08-19 01:06:46,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:46,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113414602] [2020-08-19 01:06:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-08-19 01:06:46,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113414602] [2020-08-19 01:06:46,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:46,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 01:06:46,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621688837] [2020-08-19 01:06:46,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 01:06:46,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:46,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 01:06:46,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:06:46,982 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 22 states. [2020-08-19 01:06:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:47,300 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-08-19 01:06:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:06:47,301 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-08-19 01:06:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:47,303 INFO L225 Difference]: With dead ends: 88 [2020-08-19 01:06:47,303 INFO L226 Difference]: Without dead ends: 84 [2020-08-19 01:06:47,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 01:06:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-19 01:06:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-19 01:06:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-19 01:06:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-08-19 01:06:47,317 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 132 [2020-08-19 01:06:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:47,318 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-08-19 01:06:47,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 01:06:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-08-19 01:06:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 01:06:47,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:47,320 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:47,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 01:06:47,320 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-08-19 01:06:47,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:47,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790759539] [2020-08-19 01:06:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-08-19 01:06:48,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790759539] [2020-08-19 01:06:48,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:48,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 01:06:48,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016238563] [2020-08-19 01:06:48,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 01:06:48,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 01:06:48,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:06:48,447 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 23 states. [2020-08-19 01:06:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:48,789 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-08-19 01:06:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:06:48,790 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-08-19 01:06:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:48,791 INFO L225 Difference]: With dead ends: 91 [2020-08-19 01:06:48,791 INFO L226 Difference]: Without dead ends: 87 [2020-08-19 01:06:48,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 01:06:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-19 01:06:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-08-19 01:06:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-19 01:06:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-19 01:06:48,801 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 139 [2020-08-19 01:06:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:48,803 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-19 01:06:48,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-19 01:06:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-19 01:06:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 01:06:48,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:48,806 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:48,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 01:06:48,806 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-08-19 01:06:48,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:48,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247984769] [2020-08-19 01:06:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-08-19 01:06:49,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247984769] [2020-08-19 01:06:49,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:49,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-19 01:06:49,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360554312] [2020-08-19 01:06:49,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-19 01:06:49,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:49,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-19 01:06:49,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:06:49,813 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 24 states. [2020-08-19 01:06:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:50,186 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-08-19 01:06:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 01:06:50,186 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 146 [2020-08-19 01:06:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:50,188 INFO L225 Difference]: With dead ends: 94 [2020-08-19 01:06:50,189 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 01:06:50,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 01:06:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 01:06:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-19 01:06:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-19 01:06:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-08-19 01:06:50,198 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 146 [2020-08-19 01:06:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:50,199 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-08-19 01:06:50,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-19 01:06:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-08-19 01:06:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-19 01:06:50,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:50,201 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:50,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 01:06:50,201 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:50,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:50,202 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-08-19 01:06:50,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:50,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970126701] [2020-08-19 01:06:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-08-19 01:06:51,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970126701] [2020-08-19 01:06:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:51,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-19 01:06:51,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729333450] [2020-08-19 01:06:51,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-19 01:06:51,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:51,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-19 01:06:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:06:51,571 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 25 states. [2020-08-19 01:06:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:52,076 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-08-19 01:06:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:06:52,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 153 [2020-08-19 01:06:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:52,079 INFO L225 Difference]: With dead ends: 97 [2020-08-19 01:06:52,079 INFO L226 Difference]: Without dead ends: 93 [2020-08-19 01:06:52,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-19 01:06:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-19 01:06:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-19 01:06:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-19 01:06:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-08-19 01:06:52,091 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 153 [2020-08-19 01:06:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:52,093 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-08-19 01:06:52,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-19 01:06:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-08-19 01:06:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 01:06:52,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:52,096 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:52,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 01:06:52,096 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:52,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-08-19 01:06:52,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:52,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326671976] [2020-08-19 01:06:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-08-19 01:06:53,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326671976] [2020-08-19 01:06:53,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:53,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-19 01:06:53,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933215996] [2020-08-19 01:06:53,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-19 01:06:53,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-19 01:06:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:06:53,331 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 26 states. [2020-08-19 01:06:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:53,749 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-08-19 01:06:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:06:53,749 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2020-08-19 01:06:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:53,750 INFO L225 Difference]: With dead ends: 100 [2020-08-19 01:06:53,751 INFO L226 Difference]: Without dead ends: 96 [2020-08-19 01:06:53,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-08-19 01:06:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-19 01:06:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-08-19 01:06:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 01:06:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-19 01:06:53,758 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 160 [2020-08-19 01:06:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:53,758 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-19 01:06:53,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-19 01:06:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-19 01:06:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-19 01:06:53,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:53,760 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:53,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 01:06:53,760 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:53,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-08-19 01:06:53,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:53,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140828459] [2020-08-19 01:06:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-08-19 01:06:55,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140828459] [2020-08-19 01:06:55,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:55,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-19 01:06:55,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124114326] [2020-08-19 01:06:55,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-19 01:06:55,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:55,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-19 01:06:55,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:06:55,133 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 27 states. [2020-08-19 01:06:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:55,558 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-08-19 01:06:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 01:06:55,558 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 167 [2020-08-19 01:06:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:55,560 INFO L225 Difference]: With dead ends: 103 [2020-08-19 01:06:55,560 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 01:06:55,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-08-19 01:06:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 01:06:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-08-19 01:06:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-19 01:06:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-08-19 01:06:55,567 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 167 [2020-08-19 01:06:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:55,567 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-08-19 01:06:55,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-19 01:06:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-08-19 01:06:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 01:06:55,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:55,569 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:55,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 01:06:55,570 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-08-19 01:06:55,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:55,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778836114] [2020-08-19 01:06:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-08-19 01:06:56,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778836114] [2020-08-19 01:06:56,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:56,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 01:06:56,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961536857] [2020-08-19 01:06:56,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 01:06:56,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:56,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 01:06:56,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:06:56,769 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 28 states. [2020-08-19 01:06:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:57,208 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-08-19 01:06:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 01:06:57,209 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 174 [2020-08-19 01:06:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:57,210 INFO L225 Difference]: With dead ends: 106 [2020-08-19 01:06:57,210 INFO L226 Difference]: Without dead ends: 102 [2020-08-19 01:06:57,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 01:06:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-19 01:06:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-19 01:06:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-19 01:06:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-08-19 01:06:57,217 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 174 [2020-08-19 01:06:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:57,217 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-08-19 01:06:57,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 01:06:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-08-19 01:06:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 01:06:57,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:57,220 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:57,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 01:06:57,220 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-08-19 01:06:57,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:57,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491080082] [2020-08-19 01:06:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-08-19 01:06:58,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491080082] [2020-08-19 01:06:58,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:06:58,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-19 01:06:58,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605124146] [2020-08-19 01:06:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-19 01:06:58,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-19 01:06:58,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-19 01:06:58,585 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 29 states. [2020-08-19 01:06:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:59,053 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-08-19 01:06:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 01:06:59,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 181 [2020-08-19 01:06:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:59,055 INFO L225 Difference]: With dead ends: 109 [2020-08-19 01:06:59,055 INFO L226 Difference]: Without dead ends: 105 [2020-08-19 01:06:59,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 01:06:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-19 01:06:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-08-19 01:06:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 01:06:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-19 01:06:59,065 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 181 [2020-08-19 01:06:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:59,066 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-19 01:06:59,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-19 01:06:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-19 01:06:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-19 01:06:59,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:59,069 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:59,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 01:06:59,070 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:59,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-08-19 01:06:59,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:59,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201192522] [2020-08-19 01:06:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:06:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:06:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-08-19 01:07:00,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201192522] [2020-08-19 01:07:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:00,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-19 01:07:00,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110149460] [2020-08-19 01:07:00,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-19 01:07:00,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-19 01:07:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:07:00,679 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 30 states. [2020-08-19 01:07:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:01,206 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-08-19 01:07:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:07:01,207 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-08-19 01:07:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:01,208 INFO L225 Difference]: With dead ends: 112 [2020-08-19 01:07:01,208 INFO L226 Difference]: Without dead ends: 108 [2020-08-19 01:07:01,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 01:07:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-19 01:07:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-08-19 01:07:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 01:07:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-08-19 01:07:01,215 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 188 [2020-08-19 01:07:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:01,215 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-08-19 01:07:01,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-19 01:07:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-08-19 01:07:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-19 01:07:01,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:01,217 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:01,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 01:07:01,217 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-08-19 01:07:01,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:01,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506199344] [2020-08-19 01:07:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-08-19 01:07:03,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506199344] [2020-08-19 01:07:03,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:03,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-19 01:07:03,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666314259] [2020-08-19 01:07:03,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-19 01:07:03,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:03,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-19 01:07:03,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-08-19 01:07:03,055 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 31 states. [2020-08-19 01:07:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:03,621 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-08-19 01:07:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-19 01:07:03,621 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 195 [2020-08-19 01:07:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:03,623 INFO L225 Difference]: With dead ends: 115 [2020-08-19 01:07:03,623 INFO L226 Difference]: Without dead ends: 111 [2020-08-19 01:07:03,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 01:07:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-19 01:07:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-19 01:07:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 01:07:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-08-19 01:07:03,635 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 195 [2020-08-19 01:07:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:03,636 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-08-19 01:07:03,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-19 01:07:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-08-19 01:07:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-08-19 01:07:03,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:03,641 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:03,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 01:07:03,641 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-08-19 01:07:03,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:03,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490401411] [2020-08-19 01:07:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-08-19 01:07:05,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490401411] [2020-08-19 01:07:05,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:05,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-19 01:07:05,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713377185] [2020-08-19 01:07:05,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-19 01:07:05,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:05,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-19 01:07:05,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:07:05,311 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 32 states. [2020-08-19 01:07:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:06,022 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-08-19 01:07:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 01:07:06,023 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-08-19 01:07:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:06,025 INFO L225 Difference]: With dead ends: 118 [2020-08-19 01:07:06,025 INFO L226 Difference]: Without dead ends: 114 [2020-08-19 01:07:06,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2020-08-19 01:07:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-19 01:07:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-19 01:07:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 01:07:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-08-19 01:07:06,032 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 202 [2020-08-19 01:07:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:06,033 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-08-19 01:07:06,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-19 01:07:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-08-19 01:07:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-19 01:07:06,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:06,035 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:06,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 01:07:06,035 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:06,035 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-08-19 01:07:06,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:06,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726747253] [2020-08-19 01:07:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-08-19 01:07:08,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726747253] [2020-08-19 01:07:08,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:08,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-19 01:07:08,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998268554] [2020-08-19 01:07:08,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-19 01:07:08,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-19 01:07:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 01:07:08,036 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 33 states. [2020-08-19 01:07:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:08,752 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-08-19 01:07:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-19 01:07:08,752 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 209 [2020-08-19 01:07:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:08,754 INFO L225 Difference]: With dead ends: 121 [2020-08-19 01:07:08,755 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 01:07:08,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2020-08-19 01:07:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 01:07:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 01:07:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 01:07:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-08-19 01:07:08,762 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 209 [2020-08-19 01:07:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:08,763 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-08-19 01:07:08,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-19 01:07:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-08-19 01:07:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-19 01:07:08,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:08,764 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:08,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 01:07:08,765 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-08-19 01:07:08,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:08,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091869854] [2020-08-19 01:07:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:09,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-08-19 01:07:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091869854] [2020-08-19 01:07:10,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:10,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-19 01:07:10,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489715629] [2020-08-19 01:07:10,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-19 01:07:10,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-19 01:07:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 01:07:10,607 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 34 states. [2020-08-19 01:07:11,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:11,296 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-19 01:07:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 01:07:11,297 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2020-08-19 01:07:11,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:11,299 INFO L225 Difference]: With dead ends: 124 [2020-08-19 01:07:11,299 INFO L226 Difference]: Without dead ends: 120 [2020-08-19 01:07:11,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2020-08-19 01:07:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-19 01:07:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-08-19 01:07:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 01:07:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2020-08-19 01:07:11,307 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 216 [2020-08-19 01:07:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:11,308 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2020-08-19 01:07:11,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-19 01:07:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2020-08-19 01:07:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-08-19 01:07:11,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:11,310 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:11,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 01:07:11,311 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:11,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-08-19 01:07:11,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:11,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343503374] [2020-08-19 01:07:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-08-19 01:07:13,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343503374] [2020-08-19 01:07:13,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:13,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-19 01:07:13,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491300574] [2020-08-19 01:07:13,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-19 01:07:13,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:13,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-19 01:07:13,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 01:07:13,192 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand 35 states. [2020-08-19 01:07:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:13,830 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-08-19 01:07:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 01:07:13,831 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 223 [2020-08-19 01:07:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:13,833 INFO L225 Difference]: With dead ends: 127 [2020-08-19 01:07:13,834 INFO L226 Difference]: Without dead ends: 123 [2020-08-19 01:07:13,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2020-08-19 01:07:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-19 01:07:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-08-19 01:07:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 01:07:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-08-19 01:07:13,842 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 223 [2020-08-19 01:07:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:13,843 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-08-19 01:07:13,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-19 01:07:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-08-19 01:07:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-19 01:07:13,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:13,845 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:13,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 01:07:13,845 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-08-19 01:07:13,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:13,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437991275] [2020-08-19 01:07:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-08-19 01:07:15,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437991275] [2020-08-19 01:07:15,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:15,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-19 01:07:15,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665861603] [2020-08-19 01:07:15,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-19 01:07:15,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-19 01:07:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:07:15,931 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 36 states. [2020-08-19 01:07:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:16,699 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-08-19 01:07:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-19 01:07:16,699 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 230 [2020-08-19 01:07:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:16,701 INFO L225 Difference]: With dead ends: 130 [2020-08-19 01:07:16,701 INFO L226 Difference]: Without dead ends: 126 [2020-08-19 01:07:16,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2020-08-19 01:07:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-19 01:07:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-08-19 01:07:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 01:07:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-08-19 01:07:16,709 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 230 [2020-08-19 01:07:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:16,709 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-08-19 01:07:16,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-19 01:07:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-08-19 01:07:16,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-19 01:07:16,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:16,711 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:16,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 01:07:16,712 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:16,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:16,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-08-19 01:07:16,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:16,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702224935] [2020-08-19 01:07:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:17,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-08-19 01:07:18,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702224935] [2020-08-19 01:07:18,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:18,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-19 01:07:18,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243391405] [2020-08-19 01:07:18,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-19 01:07:18,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:18,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-19 01:07:18,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:07:18,781 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 37 states. [2020-08-19 01:07:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:19,418 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-08-19 01:07:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 01:07:19,418 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 237 [2020-08-19 01:07:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:19,419 INFO L225 Difference]: With dead ends: 133 [2020-08-19 01:07:19,419 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 01:07:19,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2020-08-19 01:07:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 01:07:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-08-19 01:07:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 01:07:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-08-19 01:07:19,426 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 237 [2020-08-19 01:07:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:19,427 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-08-19 01:07:19,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-19 01:07:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-08-19 01:07:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-19 01:07:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:19,429 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:19,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 01:07:19,429 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:19,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-08-19 01:07:19,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745361841] [2020-08-19 01:07:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-08-19 01:07:21,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745361841] [2020-08-19 01:07:21,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:21,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-19 01:07:21,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138773875] [2020-08-19 01:07:21,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-19 01:07:21,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-19 01:07:21,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 01:07:21,583 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 38 states. [2020-08-19 01:07:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:22,304 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-19 01:07:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 01:07:22,305 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 244 [2020-08-19 01:07:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:22,306 INFO L225 Difference]: With dead ends: 136 [2020-08-19 01:07:22,306 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 01:07:22,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2020-08-19 01:07:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 01:07:22,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-08-19 01:07:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 01:07:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-08-19 01:07:22,313 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 244 [2020-08-19 01:07:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:22,313 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-08-19 01:07:22,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-19 01:07:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-08-19 01:07:22,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-19 01:07:22,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:22,318 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:22,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 01:07:22,319 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:22,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-08-19 01:07:22,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:22,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234775327] [2020-08-19 01:07:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-08-19 01:07:24,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234775327] [2020-08-19 01:07:24,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:24,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-19 01:07:24,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929116056] [2020-08-19 01:07:24,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-19 01:07:24,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:24,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-19 01:07:24,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 01:07:24,660 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 39 states. [2020-08-19 01:07:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:07:25,404 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2020-08-19 01:07:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-19 01:07:25,409 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 251 [2020-08-19 01:07:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:07:25,410 INFO L225 Difference]: With dead ends: 139 [2020-08-19 01:07:25,410 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 01:07:25,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2020-08-19 01:07:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 01:07:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-08-19 01:07:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 01:07:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2020-08-19 01:07:25,417 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 251 [2020-08-19 01:07:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:07:25,417 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2020-08-19 01:07:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-19 01:07:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2020-08-19 01:07:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-08-19 01:07:25,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:07:25,419 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:07:25,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-19 01:07:25,420 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:07:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:07:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-08-19 01:07:25,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:07:25,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148839743] [2020-08-19 01:07:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:07:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:07:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:07:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:07:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:07:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-08-19 01:07:27,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148839743] [2020-08-19 01:07:27,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:07:27,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-08-19 01:07:27,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197666039] [2020-08-19 01:07:27,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-08-19 01:07:27,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:07:27,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-08-19 01:07:27,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 01:07:27,841 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand 40 states.