/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:19:55,247 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-21 21:19:55,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:19:55,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:19:55,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:19:55,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:19:55,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:19:55,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:19:55,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:19:55,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:19:55,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:19:55,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:19:55,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:19:55,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:19:55,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:19:55,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:19:55,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:19:55,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:19:55,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:19:55,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:19:55,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:19:55,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:19:55,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 21:19:55,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:19:55,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:19:55,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:19:55,315 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 [2020-08-21 21:19:55,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:19:55,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:19:55,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:19:55,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:19:55,341 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:19:55,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:19:55,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:19:55,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:19:55,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:19:55,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:19:55,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:19:55,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:19:55,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:19:55,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:19:55,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:19:55,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:19:55,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:19:55,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:19:55,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:19:55,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:19:55,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:19:55,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:19:55,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:19:55,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:19:55,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:19:55,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:19:55,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:19:55,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:19:55,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:19:55,346 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=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:19:55,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:19:55,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:19:55,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:19:55,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:19:55,671 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:19:55,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-21 21:19:55,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/640fb7491/4d7f923a893047efa9f3045ca420a501/FLAG35fea8525 [2020-08-21 21:19:56,172 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:19:56,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-21 21:19:56,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/640fb7491/4d7f923a893047efa9f3045ca420a501/FLAG35fea8525 [2020-08-21 21:19:56,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/640fb7491/4d7f923a893047efa9f3045ca420a501 [2020-08-21 21:19:56,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:19:56,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:19:56,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:56,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:19:56,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:19:56,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68901205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56, skipping insertion in model container [2020-08-21 21:19:56,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:19:56,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:19:56,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:56,776 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:19:56,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:56,811 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:19:56,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56 WrapperNode [2020-08-21 21:19:56,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:56,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:19:56,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:19:56,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:19:56,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (1/1) ... [2020-08-21 21:19:56,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:19:56,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:19:56,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:19:56,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:19:56,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (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 [2020-08-21 21:19:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:19:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:19:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-21 21:19:57,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:19:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:19:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:19:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-21 21:19:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:19:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:19:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:19:57,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:19:57,255 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:19:57,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:57 BoogieIcfgContainer [2020-08-21 21:19:57,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:19:57,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:19:57,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:19:57,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:19:57,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:19:56" (1/3) ... [2020-08-21 21:19:57,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5b7317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:57, skipping insertion in model container [2020-08-21 21:19:57,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:56" (2/3) ... [2020-08-21 21:19:57,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5b7317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:57, skipping insertion in model container [2020-08-21 21:19:57,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:57" (3/3) ... [2020-08-21 21:19:57,269 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-08-21 21:19:57,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:19:57,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:19:57,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:19:57,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:19:57,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:19:57,386 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:19:57,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:19:57,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:19:57,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:19:57,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:19:57,387 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:19:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-21 21:19:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 21:19:57,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:57,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:57,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-08-21 21:19:57,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:57,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193943998] [2020-08-21 21:19:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:19:57,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193943998] [2020-08-21 21:19:57,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:19:57,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:19:57,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138323145] [2020-08-21 21:19:57,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:19:57,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:19:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:19:57,739 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-21 21:19:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:57,857 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-21 21:19:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:19:57,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 21:19:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:57,871 INFO L225 Difference]: With dead ends: 36 [2020-08-21 21:19:57,871 INFO L226 Difference]: Without dead ends: 22 [2020-08-21 21:19:57,875 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 [2020-08-21 21:19:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-21 21:19:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-21 21:19:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 21:19:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-08-21 21:19:57,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-08-21 21:19:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:57,921 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-08-21 21:19:57,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:19:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-08-21 21:19:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 21:19:57,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:57,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:57,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:19:57,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:57,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-08-21 21:19:57,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:57,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115654852] [2020-08-21 21:19:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:19:57,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115654852] [2020-08-21 21:19:57,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:19:57,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:19:57,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445725476] [2020-08-21 21:19:57,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:19:57,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:19:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:19:57,991 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-08-21 21:19:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:58,032 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-08-21 21:19:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:19:58,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-21 21:19:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:58,034 INFO L225 Difference]: With dead ends: 32 [2020-08-21 21:19:58,034 INFO L226 Difference]: Without dead ends: 24 [2020-08-21 21:19:58,035 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 [2020-08-21 21:19:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-21 21:19:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-08-21 21:19:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 21:19:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 21:19:58,044 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-21 21:19:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:58,045 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 21:19:58,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:19:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 21:19:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:19:58,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:58,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:58,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:19:58,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-08-21 21:19:58,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:58,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345139169] [2020-08-21 21:19:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 21:19:58,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345139169] [2020-08-21 21:19:58,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:19:58,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 21:19:58,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036699933] [2020-08-21 21:19:58,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:19:58,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:58,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:19:58,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:19:58,166 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-21 21:19:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:58,259 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-21 21:19:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:19:58,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-21 21:19:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:58,261 INFO L225 Difference]: With dead ends: 29 [2020-08-21 21:19:58,261 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 21:19:58,262 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 [2020-08-21 21:19:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 21:19:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 21:19:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 21:19:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-08-21 21:19:58,271 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2020-08-21 21:19:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:58,271 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-08-21 21:19:58,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:19:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-08-21 21:19:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 21:19:58,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:58,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:58,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:19:58,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:58,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-08-21 21:19:58,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:58,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289053920] [2020-08-21 21:19:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 21:19:58,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289053920] [2020-08-21 21:19:58,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:19:58,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 21:19:58,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062762224] [2020-08-21 21:19:58,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:19:58,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:58,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:19:58,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:19:58,457 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 7 states. [2020-08-21 21:19:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:58,624 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-08-21 21:19:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:19:58,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 21:19:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:58,627 INFO L225 Difference]: With dead ends: 43 [2020-08-21 21:19:58,627 INFO L226 Difference]: Without dead ends: 39 [2020-08-21 21:19:58,628 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 [2020-08-21 21:19:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-21 21:19:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-21 21:19:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 21:19:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-08-21 21:19:58,640 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 27 [2020-08-21 21:19:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:58,640 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-08-21 21:19:58,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:19:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-08-21 21:19:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 21:19:58,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:58,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:58,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:19:58,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-08-21 21:19:58,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:58,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032736233] [2020-08-21 21:19:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 21:19:58,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032736233] [2020-08-21 21:19:58,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:19:58,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 21:19:58,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194893194] [2020-08-21 21:19:58,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:19:58,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:19:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:19:58,809 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-08-21 21:19:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:58,985 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-08-21 21:19:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:19:58,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-08-21 21:19:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:58,988 INFO L225 Difference]: With dead ends: 46 [2020-08-21 21:19:58,988 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 21:19:58,989 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 [2020-08-21 21:19:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 21:19:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-21 21:19:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 21:19:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2020-08-21 21:19:59,012 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 34 [2020-08-21 21:19:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:59,015 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2020-08-21 21:19:59,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:19:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2020-08-21 21:19:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 21:19:59,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:59,020 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:59,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:19:59,024 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:59,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:59,025 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-08-21 21:19:59,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:59,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732644649] [2020-08-21 21:19:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 21:19:59,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732644649] [2020-08-21 21:19:59,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:19:59,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 21:19:59,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125799585] [2020-08-21 21:19:59,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:19:59,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:59,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:19:59,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:19:59,302 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2020-08-21 21:19:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:59,461 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2020-08-21 21:19:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:19:59,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-08-21 21:19:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:59,464 INFO L225 Difference]: With dead ends: 49 [2020-08-21 21:19:59,464 INFO L226 Difference]: Without dead ends: 45 [2020-08-21 21:19:59,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:19:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-21 21:19:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-21 21:19:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-21 21:19:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-08-21 21:19:59,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 41 [2020-08-21 21:19:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:59,476 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-08-21 21:19:59,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:19:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-08-21 21:19:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 21:19:59,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:59,479 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:59,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:19:59,479 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:59,480 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-08-21 21:19:59,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:59,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794634993] [2020-08-21 21:19:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-21 21:19:59,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794634993] [2020-08-21 21:19:59,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:19:59,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 21:19:59,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918376991] [2020-08-21 21:19:59,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:19:59,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:19:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:19:59,731 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 10 states. [2020-08-21 21:19:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:59,897 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-08-21 21:19:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:19:59,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-21 21:19:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:59,899 INFO L225 Difference]: With dead ends: 52 [2020-08-21 21:19:59,900 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 21:19:59,901 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 [2020-08-21 21:19:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 21:19:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-21 21:19:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-21 21:19:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2020-08-21 21:19:59,910 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 48 [2020-08-21 21:19:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:59,911 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2020-08-21 21:19:59,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:19:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2020-08-21 21:19:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-21 21:19:59,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:59,913 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:59,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:19:59,914 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-08-21 21:19:59,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:59,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199828455] [2020-08-21 21:19:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:19:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:19:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 21:20:00,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199828455] [2020-08-21 21:20:00,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:00,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:20:00,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487823061] [2020-08-21 21:20:00,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:20:00,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:20:00,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:20:00,129 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand 11 states. [2020-08-21 21:20:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:00,366 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-21 21:20:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:20:00,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-08-21 21:20:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:00,370 INFO L225 Difference]: With dead ends: 55 [2020-08-21 21:20:00,373 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 21:20:00,374 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 [2020-08-21 21:20:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 21:20:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-21 21:20:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-21 21:20:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-08-21 21:20:00,392 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 55 [2020-08-21 21:20:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:00,393 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-08-21 21:20:00,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:20:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-08-21 21:20:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:20:00,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:00,399 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:00,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:20:00,401 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-08-21 21:20:00,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:00,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546826639] [2020-08-21 21:20:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-08-21 21:20:00,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546826639] [2020-08-21 21:20:00,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:00,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 21:20:00,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486550859] [2020-08-21 21:20:00,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:20:00,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:20:00,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:20:00,741 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 12 states. [2020-08-21 21:20:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:00,931 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-08-21 21:20:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 21:20:00,932 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-08-21 21:20:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:00,933 INFO L225 Difference]: With dead ends: 58 [2020-08-21 21:20:00,933 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 21:20:00,936 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 [2020-08-21 21:20:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 21:20:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 21:20:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 21:20:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-08-21 21:20:00,950 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 62 [2020-08-21 21:20:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:00,951 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-08-21 21:20:00,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:20:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-08-21 21:20:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 21:20:00,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:00,954 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:00,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:20:00,954 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:00,955 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-08-21 21:20:00,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:00,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606934905] [2020-08-21 21:20:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-08-21 21:20:01,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606934905] [2020-08-21 21:20:01,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:01,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 21:20:01,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104005154] [2020-08-21 21:20:01,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:20:01,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:20:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:20:01,327 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 13 states. [2020-08-21 21:20:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:01,522 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-08-21 21:20:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:20:01,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-08-21 21:20:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:01,524 INFO L225 Difference]: With dead ends: 61 [2020-08-21 21:20:01,524 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 21:20:01,527 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 [2020-08-21 21:20:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 21:20:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-21 21:20:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-21 21:20:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-08-21 21:20:01,537 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 69 [2020-08-21 21:20:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:01,538 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-08-21 21:20:01,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 21:20:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-08-21 21:20:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-21 21:20:01,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:01,540 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:01,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:20:01,540 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:01,540 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-08-21 21:20:01,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:01,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683391807] [2020-08-21 21:20:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-21 21:20:01,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683391807] [2020-08-21 21:20:01,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:01,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 21:20:01,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088640978] [2020-08-21 21:20:01,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:20:01,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:20:01,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:20:01,917 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 14 states. [2020-08-21 21:20:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:02,157 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-08-21 21:20:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:20:02,158 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-08-21 21:20:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:02,160 INFO L225 Difference]: With dead ends: 64 [2020-08-21 21:20:02,160 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 21:20:02,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-21 21:20:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 21:20:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-21 21:20:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 21:20:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-08-21 21:20:02,169 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 76 [2020-08-21 21:20:02,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:02,169 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-08-21 21:20:02,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 21:20:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-08-21 21:20:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:20:02,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:02,171 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:02,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:20:02,171 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:02,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-08-21 21:20:02,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:02,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698291878] [2020-08-21 21:20:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-08-21 21:20:02,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698291878] [2020-08-21 21:20:02,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:02,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 21:20:02,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183229001] [2020-08-21 21:20:02,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 21:20:02,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:02,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 21:20:02,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:20:02,583 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 15 states. [2020-08-21 21:20:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:02,820 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-08-21 21:20:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:20:02,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-08-21 21:20:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:02,821 INFO L225 Difference]: With dead ends: 67 [2020-08-21 21:20:02,822 INFO L226 Difference]: Without dead ends: 63 [2020-08-21 21:20:02,823 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 [2020-08-21 21:20:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-21 21:20:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-21 21:20:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-21 21:20:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-08-21 21:20:02,836 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 83 [2020-08-21 21:20:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:02,837 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-08-21 21:20:02,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 21:20:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-08-21 21:20:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 21:20:02,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:02,838 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:02,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 21:20:02,839 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-08-21 21:20:02,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:02,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366397631] [2020-08-21 21:20:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-21 21:20:03,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366397631] [2020-08-21 21:20:03,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:03,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 21:20:03,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580079701] [2020-08-21 21:20:03,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 21:20:03,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 21:20:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:20:03,305 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 16 states. [2020-08-21 21:20:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:03,560 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-21 21:20:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 21:20:03,561 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-21 21:20:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:03,562 INFO L225 Difference]: With dead ends: 70 [2020-08-21 21:20:03,562 INFO L226 Difference]: Without dead ends: 66 [2020-08-21 21:20:03,563 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 [2020-08-21 21:20:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-21 21:20:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-21 21:20:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-21 21:20:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-08-21 21:20:03,573 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 90 [2020-08-21 21:20:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:03,573 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-08-21 21:20:03,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 21:20:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-08-21 21:20:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 21:20:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:03,575 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:03,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 21:20:03,575 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-08-21 21:20:03,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:03,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149466855] [2020-08-21 21:20:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-08-21 21:20:04,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149466855] [2020-08-21 21:20:04,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:04,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 21:20:04,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609180127] [2020-08-21 21:20:04,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 21:20:04,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 21:20:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-21 21:20:04,092 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 17 states. [2020-08-21 21:20:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:04,384 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-08-21 21:20:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 21:20:04,384 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 21:20:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:04,386 INFO L225 Difference]: With dead ends: 73 [2020-08-21 21:20:04,386 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 21:20:04,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-21 21:20:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 21:20:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 21:20:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 21:20:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-08-21 21:20:04,394 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 97 [2020-08-21 21:20:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:04,395 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-08-21 21:20:04,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 21:20:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-08-21 21:20:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 21:20:04,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:04,397 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:04,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 21:20:04,397 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-08-21 21:20:04,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:04,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384241214] [2020-08-21 21:20:04,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-08-21 21:20:05,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384241214] [2020-08-21 21:20:05,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:05,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 21:20:05,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553894373] [2020-08-21 21:20:05,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 21:20:05,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:05,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 21:20:05,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:20:05,060 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 18 states. [2020-08-21 21:20:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:05,326 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-08-21 21:20:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 21:20:05,326 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-08-21 21:20:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:05,328 INFO L225 Difference]: With dead ends: 76 [2020-08-21 21:20:05,328 INFO L226 Difference]: Without dead ends: 72 [2020-08-21 21:20:05,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-21 21:20:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-21 21:20:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-21 21:20:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-21 21:20:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-08-21 21:20:05,335 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 104 [2020-08-21 21:20:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:05,336 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-08-21 21:20:05,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 21:20:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-08-21 21:20:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 21:20:05,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:05,337 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:05,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 21:20:05,338 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:05,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-08-21 21:20:05,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:05,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966856346] [2020-08-21 21:20:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-21 21:20:05,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966856346] [2020-08-21 21:20:06,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:06,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 21:20:06,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010327821] [2020-08-21 21:20:06,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 21:20:06,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:06,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 21:20:06,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:20:06,005 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 19 states. [2020-08-21 21:20:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:06,291 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-21 21:20:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:20:06,291 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-08-21 21:20:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:06,293 INFO L225 Difference]: With dead ends: 79 [2020-08-21 21:20:06,294 INFO L226 Difference]: Without dead ends: 75 [2020-08-21 21:20:06,295 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 [2020-08-21 21:20:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-21 21:20:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-21 21:20:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-21 21:20:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-08-21 21:20:06,302 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 111 [2020-08-21 21:20:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:06,303 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-08-21 21:20:06,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 21:20:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-08-21 21:20:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-21 21:20:06,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:06,305 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:06,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 21:20:06,306 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:06,306 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-08-21 21:20:06,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:06,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124613519] [2020-08-21 21:20:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-08-21 21:20:07,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124613519] [2020-08-21 21:20:07,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:07,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-21 21:20:07,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537376417] [2020-08-21 21:20:07,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-21 21:20:07,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-21 21:20:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:20:07,002 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 20 states. [2020-08-21 21:20:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:07,304 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-08-21 21:20:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 21:20:07,304 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2020-08-21 21:20:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:07,306 INFO L225 Difference]: With dead ends: 82 [2020-08-21 21:20:07,306 INFO L226 Difference]: Without dead ends: 78 [2020-08-21 21:20:07,307 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 [2020-08-21 21:20:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-21 21:20:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-21 21:20:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-21 21:20:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-08-21 21:20:07,312 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 118 [2020-08-21 21:20:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:07,313 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-08-21 21:20:07,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-21 21:20:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-08-21 21:20:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-21 21:20:07,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:07,315 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:07,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 21:20:07,315 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-08-21 21:20:07,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:07,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869245131] [2020-08-21 21:20:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-08-21 21:20:07,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869245131] [2020-08-21 21:20:07,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:07,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 21:20:07,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843174979] [2020-08-21 21:20:07,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 21:20:07,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 21:20:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-21 21:20:07,982 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 21 states. [2020-08-21 21:20:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:08,280 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-08-21 21:20:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 21:20:08,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 125 [2020-08-21 21:20:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:08,282 INFO L225 Difference]: With dead ends: 85 [2020-08-21 21:20:08,282 INFO L226 Difference]: Without dead ends: 81 [2020-08-21 21:20:08,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 21:20:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-21 21:20:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-21 21:20:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-21 21:20:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-08-21 21:20:08,293 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 125 [2020-08-21 21:20:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:08,293 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-08-21 21:20:08,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 21:20:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-08-21 21:20:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 21:20:08,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:08,295 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:08,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 21:20:08,296 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:08,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-08-21 21:20:08,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:08,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842956221] [2020-08-21 21:20:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-08-21 21:20:09,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842956221] [2020-08-21 21:20:09,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:09,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 21:20:09,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281437932] [2020-08-21 21:20:09,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 21:20:09,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 21:20:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:20:09,305 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 22 states. [2020-08-21 21:20:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:09,695 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-08-21 21:20:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 21:20:09,696 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-08-21 21:20:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:09,697 INFO L225 Difference]: With dead ends: 88 [2020-08-21 21:20:09,697 INFO L226 Difference]: Without dead ends: 84 [2020-08-21 21:20:09,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 21:20:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-21 21:20:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-21 21:20:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-21 21:20:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-08-21 21:20:09,707 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 132 [2020-08-21 21:20:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:09,708 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-08-21 21:20:09,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 21:20:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-08-21 21:20:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 21:20:09,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:09,711 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:09,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 21:20:09,711 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-08-21 21:20:09,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:09,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338955022] [2020-08-21 21:20:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-08-21 21:20:10,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338955022] [2020-08-21 21:20:10,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:10,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-21 21:20:10,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570176243] [2020-08-21 21:20:10,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-21 21:20:10,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-21 21:20:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-21 21:20:10,794 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 23 states. [2020-08-21 21:20:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:11,124 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-08-21 21:20:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 21:20:11,125 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-08-21 21:20:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:11,126 INFO L225 Difference]: With dead ends: 91 [2020-08-21 21:20:11,126 INFO L226 Difference]: Without dead ends: 87 [2020-08-21 21:20:11,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 21:20:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-21 21:20:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-08-21 21:20:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-21 21:20:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-21 21:20:11,135 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 139 [2020-08-21 21:20:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:11,136 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-21 21:20:11,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-21 21:20:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-21 21:20:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 21:20:11,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:11,138 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:11,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 21:20:11,138 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-08-21 21:20:11,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:11,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795294038] [2020-08-21 21:20:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-08-21 21:20:12,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795294038] [2020-08-21 21:20:12,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:12,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-21 21:20:12,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696629037] [2020-08-21 21:20:12,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-21 21:20:12,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:12,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-21 21:20:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-21 21:20:12,431 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 24 states. [2020-08-21 21:20:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:12,835 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-08-21 21:20:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 21:20:12,836 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 146 [2020-08-21 21:20:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:12,837 INFO L225 Difference]: With dead ends: 94 [2020-08-21 21:20:12,840 INFO L226 Difference]: Without dead ends: 90 [2020-08-21 21:20:12,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 21:20:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-21 21:20:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-21 21:20:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-21 21:20:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-08-21 21:20:12,848 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 146 [2020-08-21 21:20:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:12,849 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-08-21 21:20:12,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-21 21:20:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-08-21 21:20:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 21:20:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:12,851 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:12,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 21:20:12,851 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:12,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:12,852 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-08-21 21:20:12,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:12,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469815145] [2020-08-21 21:20:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-08-21 21:20:13,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469815145] [2020-08-21 21:20:13,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:13,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-21 21:20:13,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278594052] [2020-08-21 21:20:13,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-21 21:20:13,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-21 21:20:13,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-21 21:20:13,955 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 25 states. [2020-08-21 21:20:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:14,353 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-08-21 21:20:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 21:20:14,355 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 153 [2020-08-21 21:20:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:14,356 INFO L225 Difference]: With dead ends: 97 [2020-08-21 21:20:14,356 INFO L226 Difference]: Without dead ends: 93 [2020-08-21 21:20:14,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-21 21:20:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-21 21:20:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-21 21:20:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 21:20:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-08-21 21:20:14,369 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 153 [2020-08-21 21:20:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:14,370 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-08-21 21:20:14,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-21 21:20:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-08-21 21:20:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 21:20:14,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:14,373 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:14,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 21:20:14,373 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:14,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-08-21 21:20:14,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:14,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118173657] [2020-08-21 21:20:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-08-21 21:20:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118173657] [2020-08-21 21:20:15,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-21 21:20:15,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405726151] [2020-08-21 21:20:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-21 21:20:15,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:15,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-21 21:20:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-21 21:20:15,747 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 26 states. [2020-08-21 21:20:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:16,209 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-08-21 21:20:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 21:20:16,210 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2020-08-21 21:20:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:16,211 INFO L225 Difference]: With dead ends: 100 [2020-08-21 21:20:16,211 INFO L226 Difference]: Without dead ends: 96 [2020-08-21 21:20:16,213 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 [2020-08-21 21:20:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-21 21:20:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-08-21 21:20:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 21:20:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 21:20:16,218 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 160 [2020-08-21 21:20:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:16,219 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 21:20:16,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-21 21:20:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 21:20:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-21 21:20:16,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:16,220 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:16,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 21:20:16,221 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:16,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-08-21 21:20:16,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:16,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708453532] [2020-08-21 21:20:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:16,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-08-21 21:20:17,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708453532] [2020-08-21 21:20:17,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:17,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-21 21:20:17,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654481174] [2020-08-21 21:20:17,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-21 21:20:17,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:17,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-21 21:20:17,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-21 21:20:17,540 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 27 states. [2020-08-21 21:20:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:17,992 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-08-21 21:20:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 21:20:17,993 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 167 [2020-08-21 21:20:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:17,996 INFO L225 Difference]: With dead ends: 103 [2020-08-21 21:20:17,996 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 21:20:17,998 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 [2020-08-21 21:20:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 21:20:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-08-21 21:20:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 21:20:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-08-21 21:20:18,008 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 167 [2020-08-21 21:20:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:18,009 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-08-21 21:20:18,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-21 21:20:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-08-21 21:20:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-21 21:20:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:18,011 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:18,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 21:20:18,015 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-08-21 21:20:18,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:18,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628701119] [2020-08-21 21:20:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-08-21 21:20:19,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628701119] [2020-08-21 21:20:19,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:19,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 21:20:19,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877438163] [2020-08-21 21:20:19,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 21:20:19,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 21:20:19,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:20:19,341 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 28 states. [2020-08-21 21:20:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:19,831 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-08-21 21:20:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 21:20:19,831 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 174 [2020-08-21 21:20:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:19,833 INFO L225 Difference]: With dead ends: 106 [2020-08-21 21:20:19,833 INFO L226 Difference]: Without dead ends: 102 [2020-08-21 21:20:19,835 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 [2020-08-21 21:20:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-21 21:20:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-21 21:20:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-21 21:20:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-08-21 21:20:19,846 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 174 [2020-08-21 21:20:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:19,847 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-08-21 21:20:19,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 21:20:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-08-21 21:20:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-21 21:20:19,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:19,849 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:19,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 21:20:19,849 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-08-21 21:20:19,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:19,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429215433] [2020-08-21 21:20:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-08-21 21:20:21,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429215433] [2020-08-21 21:20:21,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:21,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 21:20:21,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604847928] [2020-08-21 21:20:21,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 21:20:21,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 21:20:21,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-21 21:20:21,411 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 29 states. [2020-08-21 21:20:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:21,899 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-08-21 21:20:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 21:20:21,900 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 181 [2020-08-21 21:20:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:21,901 INFO L225 Difference]: With dead ends: 109 [2020-08-21 21:20:21,902 INFO L226 Difference]: Without dead ends: 105 [2020-08-21 21:20:21,904 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 [2020-08-21 21:20:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-21 21:20:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-08-21 21:20:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 21:20:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-21 21:20:21,909 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 181 [2020-08-21 21:20:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:21,909 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-21 21:20:21,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 21:20:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-21 21:20:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-21 21:20:21,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:21,911 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:21,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 21:20:21,911 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-08-21 21:20:21,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:21,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857624833] [2020-08-21 21:20:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-08-21 21:20:23,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857624833] [2020-08-21 21:20:23,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:23,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-21 21:20:23,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132374354] [2020-08-21 21:20:23,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-21 21:20:23,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-21 21:20:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-08-21 21:20:23,473 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 30 states. [2020-08-21 21:20:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:23,971 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-08-21 21:20:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 21:20:23,971 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-08-21 21:20:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:23,973 INFO L225 Difference]: With dead ends: 112 [2020-08-21 21:20:23,973 INFO L226 Difference]: Without dead ends: 108 [2020-08-21 21:20:23,975 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 [2020-08-21 21:20:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-21 21:20:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-08-21 21:20:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 21:20:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-08-21 21:20:23,980 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 188 [2020-08-21 21:20:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:23,981 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-08-21 21:20:23,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-21 21:20:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-08-21 21:20:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-21 21:20:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:23,982 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:23,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 21:20:23,983 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-08-21 21:20:23,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:23,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65889999] [2020-08-21 21:20:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:24,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-08-21 21:20:25,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65889999] [2020-08-21 21:20:25,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:25,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-21 21:20:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114123731] [2020-08-21 21:20:25,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-21 21:20:25,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:25,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-21 21:20:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-08-21 21:20:25,722 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 31 states. [2020-08-21 21:20:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:26,243 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-08-21 21:20:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-21 21:20:26,244 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 195 [2020-08-21 21:20:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:26,246 INFO L225 Difference]: With dead ends: 115 [2020-08-21 21:20:26,246 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 21:20:26,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-08-21 21:20:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 21:20:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-21 21:20:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 21:20:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-08-21 21:20:26,254 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 195 [2020-08-21 21:20:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:26,254 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-08-21 21:20:26,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-21 21:20:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-08-21 21:20:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-08-21 21:20:26,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:26,256 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:26,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 21:20:26,256 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-08-21 21:20:26,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:26,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136200461] [2020-08-21 21:20:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:26,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-08-21 21:20:27,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136200461] [2020-08-21 21:20:27,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:27,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-21 21:20:27,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511879801] [2020-08-21 21:20:27,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-21 21:20:27,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-21 21:20:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-08-21 21:20:27,844 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 32 states. [2020-08-21 21:20:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:28,417 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-08-21 21:20:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 21:20:28,418 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-08-21 21:20:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:28,420 INFO L225 Difference]: With dead ends: 118 [2020-08-21 21:20:28,420 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 21:20:28,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2020-08-21 21:20:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 21:20:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-21 21:20:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 21:20:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-08-21 21:20:28,428 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 202 [2020-08-21 21:20:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:28,428 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-08-21 21:20:28,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-21 21:20:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-08-21 21:20:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-21 21:20:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:28,430 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:28,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 21:20:28,430 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-08-21 21:20:28,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:28,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396925209] [2020-08-21 21:20:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-08-21 21:20:30,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396925209] [2020-08-21 21:20:30,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:30,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-21 21:20:30,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777188067] [2020-08-21 21:20:30,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-21 21:20:30,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-21 21:20:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 21:20:30,074 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 33 states. [2020-08-21 21:20:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:30,664 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-08-21 21:20:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-21 21:20:30,665 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 209 [2020-08-21 21:20:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:30,666 INFO L225 Difference]: With dead ends: 121 [2020-08-21 21:20:30,667 INFO L226 Difference]: Without dead ends: 117 [2020-08-21 21:20:30,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2020-08-21 21:20:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-21 21:20:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-21 21:20:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 21:20:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-08-21 21:20:30,677 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 209 [2020-08-21 21:20:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:30,677 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-08-21 21:20:30,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-21 21:20:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-08-21 21:20:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-21 21:20:30,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:30,678 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:30,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 21:20:30,678 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-08-21 21:20:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:30,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598977316] [2020-08-21 21:20:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-08-21 21:20:32,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598977316] [2020-08-21 21:20:32,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:32,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-21 21:20:32,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564128236] [2020-08-21 21:20:32,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-21 21:20:32,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:32,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-21 21:20:32,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 21:20:32,323 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 34 states. [2020-08-21 21:20:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:32,916 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-21 21:20:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 21:20:32,917 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2020-08-21 21:20:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:32,918 INFO L225 Difference]: With dead ends: 124 [2020-08-21 21:20:32,918 INFO L226 Difference]: Without dead ends: 120 [2020-08-21 21:20:32,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2020-08-21 21:20:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-21 21:20:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-08-21 21:20:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 21:20:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2020-08-21 21:20:32,926 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 216 [2020-08-21 21:20:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:32,927 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2020-08-21 21:20:32,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-21 21:20:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2020-08-21 21:20:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-08-21 21:20:32,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:32,928 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:32,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 21:20:32,929 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-08-21 21:20:32,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:32,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095935158] [2020-08-21 21:20:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-08-21 21:20:34,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095935158] [2020-08-21 21:20:34,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:34,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-21 21:20:34,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506886223] [2020-08-21 21:20:34,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-21 21:20:34,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:34,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-21 21:20:34,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 21:20:34,722 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand 35 states. [2020-08-21 21:20:35,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:35,370 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-08-21 21:20:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 21:20:35,371 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 223 [2020-08-21 21:20:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:35,373 INFO L225 Difference]: With dead ends: 127 [2020-08-21 21:20:35,373 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 21:20:35,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2020-08-21 21:20:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 21:20:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-08-21 21:20:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 21:20:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-08-21 21:20:35,381 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 223 [2020-08-21 21:20:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:35,382 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-08-21 21:20:35,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-21 21:20:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-08-21 21:20:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-21 21:20:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:35,383 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:35,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 21:20:35,384 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-08-21 21:20:35,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:35,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597294825] [2020-08-21 21:20:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-08-21 21:20:37,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597294825] [2020-08-21 21:20:37,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:37,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-21 21:20:37,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759258371] [2020-08-21 21:20:37,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-21 21:20:37,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:37,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-21 21:20:37,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 21:20:37,541 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 36 states. [2020-08-21 21:20:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:38,217 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-08-21 21:20:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 21:20:38,218 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 230 [2020-08-21 21:20:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:38,219 INFO L225 Difference]: With dead ends: 130 [2020-08-21 21:20:38,220 INFO L226 Difference]: Without dead ends: 126 [2020-08-21 21:20:38,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2020-08-21 21:20:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-21 21:20:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-08-21 21:20:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 21:20:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-08-21 21:20:38,232 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 230 [2020-08-21 21:20:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:38,232 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-08-21 21:20:38,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-21 21:20:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-08-21 21:20:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-21 21:20:38,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:38,234 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:38,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 21:20:38,234 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:38,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-08-21 21:20:38,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:38,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509199473] [2020-08-21 21:20:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-08-21 21:20:40,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509199473] [2020-08-21 21:20:40,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:40,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-21 21:20:40,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577270028] [2020-08-21 21:20:40,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-21 21:20:40,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:40,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-21 21:20:40,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 21:20:40,435 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 37 states. [2020-08-21 21:20:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:41,074 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-08-21 21:20:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-21 21:20:41,075 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 237 [2020-08-21 21:20:41,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:41,076 INFO L225 Difference]: With dead ends: 133 [2020-08-21 21:20:41,076 INFO L226 Difference]: Without dead ends: 129 [2020-08-21 21:20:41,078 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 [2020-08-21 21:20:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-21 21:20:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-08-21 21:20:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 21:20:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-08-21 21:20:41,083 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 237 [2020-08-21 21:20:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:41,083 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-08-21 21:20:41,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-21 21:20:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-08-21 21:20:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-21 21:20:41,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:41,085 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:41,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 21:20:41,086 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-08-21 21:20:41,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:41,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782101402] [2020-08-21 21:20:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-08-21 21:20:43,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782101402] [2020-08-21 21:20:43,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:43,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-21 21:20:43,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293400170] [2020-08-21 21:20:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-21 21:20:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:43,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-21 21:20:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 21:20:43,353 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 38 states. [2020-08-21 21:20:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:44,104 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-21 21:20:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-21 21:20:44,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 244 [2020-08-21 21:20:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:44,107 INFO L225 Difference]: With dead ends: 136 [2020-08-21 21:20:44,107 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 21:20:44,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2020-08-21 21:20:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 21:20:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-08-21 21:20:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 21:20:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-08-21 21:20:44,114 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 244 [2020-08-21 21:20:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:44,114 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-08-21 21:20:44,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-21 21:20:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-08-21 21:20:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-21 21:20:44,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:44,116 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:44,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 21:20:44,117 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-08-21 21:20:44,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:44,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2491545] [2020-08-21 21:20:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-08-21 21:20:46,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2491545] [2020-08-21 21:20:46,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:20:46,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-21 21:20:46,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467052632] [2020-08-21 21:20:46,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-21 21:20:46,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:20:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-21 21:20:46,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 21:20:46,390 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 39 states. [2020-08-21 21:20:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:20:47,158 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2020-08-21 21:20:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-21 21:20:47,158 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 251 [2020-08-21 21:20:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:20:47,161 INFO L225 Difference]: With dead ends: 139 [2020-08-21 21:20:47,161 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 21:20:47,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2020-08-21 21:20:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 21:20:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-08-21 21:20:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 21:20:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2020-08-21 21:20:47,170 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 251 [2020-08-21 21:20:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:20:47,170 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2020-08-21 21:20:47,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-21 21:20:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2020-08-21 21:20:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-08-21 21:20:47,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:20:47,172 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:20:47,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-21 21:20:47,173 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:20:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:20:47,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-08-21 21:20:47,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:20:47,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496171555] [2020-08-21 21:20:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:20:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:20:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:20:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:20:49,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 21:20:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat