/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:56:23,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:56:23,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:56:23,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 21:56:23,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:56:23,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:56:23,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:56:23,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:56:23,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:56:23,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:56:23,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:56:23,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:56:23,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:56:23,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:56:23,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:56:23,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:56:23,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:56:23,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:56:23,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:56:23,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:56:23,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:56:24,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:56:24,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:56:24,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:56:24,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:56:24,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:56:24,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:56:24,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:56:24,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:56:24,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:56:24,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:56:24,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:56:24,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:56:24,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:56:24,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:56:24,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:56:24,015 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:56:24,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:56:24,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:56:24,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:56:24,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:56:24,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:56:24,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:56:24,017 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 21:56:24,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:56:24,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:56:24,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:56:24,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:56:24,533 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:56:24,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-04 21:56:24,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7bb0004/352ea7265fbd4c70a2ba22b37742916a/FLAGceac51ec7 [2020-09-04 21:56:25,274 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:56:25,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-04 21:56:25,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7bb0004/352ea7265fbd4c70a2ba22b37742916a/FLAGceac51ec7 [2020-09-04 21:56:25,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7bb0004/352ea7265fbd4c70a2ba22b37742916a [2020-09-04 21:56:25,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:56:25,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:56:25,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:56:25,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:56:25,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:56:25,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:56:25" (1/1) ... [2020-09-04 21:56:25,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e04d88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:25, skipping insertion in model container [2020-09-04 21:56:25,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:56:25" (1/1) ... [2020-09-04 21:56:25,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:56:25,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:56:26,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:56:26,026 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:56:26,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:56:26,070 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:56:26,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26 WrapperNode [2020-09-04 21:56:26,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:56:26,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:56:26,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:56:26,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:56:26,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (1/1) ... [2020-09-04 21:56:26,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:56:26,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:56:26,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:56:26,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:56:26,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (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 [2020-09-04 21:56:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:56:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:56:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 21:56:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:56:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 21:56:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:56:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 21:56:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:56:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:56:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:56:26,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:56:26,535 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 21:56:26,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:56:26 BoogieIcfgContainer [2020-09-04 21:56:26,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:56:26,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:56:26,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:56:26,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:56:26,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:56:25" (1/3) ... [2020-09-04 21:56:26,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c974c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:56:26, skipping insertion in model container [2020-09-04 21:56:26,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:26" (2/3) ... [2020-09-04 21:56:26,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c974c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:56:26, skipping insertion in model container [2020-09-04 21:56:26,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:56:26" (3/3) ... [2020-09-04 21:56:26,551 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-04 21:56:26,561 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:56:26,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:56:26,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:56:26,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:56:26,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:56:26,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:56:26,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:56:26,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:56:26,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:56:26,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:56:26,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:56:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 21:56:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 21:56:26,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:26,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:26,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-04 21:56:26,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:26,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248488313] [2020-09-04 21:56:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:56:27,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248488313] [2020-09-04 21:56:27,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:56:27,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:56:27,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459787600] [2020-09-04 21:56:27,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:56:27,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:56:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:56:27,177 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-04 21:56:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:27,286 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-04 21:56:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:56:27,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 21:56:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:27,303 INFO L225 Difference]: With dead ends: 37 [2020-09-04 21:56:27,304 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 21:56:27,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:56:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 21:56:27,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 21:56:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 21:56:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 21:56:27,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-04 21:56:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:27,368 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 21:56:27,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:56:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 21:56:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 21:56:27,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:27,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:27,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:56:27,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-04 21:56:27,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:27,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435089156] [2020-09-04 21:56:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 21:56:27,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435089156] [2020-09-04 21:56:27,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:27,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 21:56:27,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449663114] [2020-09-04 21:56:27,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 21:56:27,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 21:56:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:56:27,617 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-04 21:56:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:27,705 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 21:56:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 21:56:27,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 21:56:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:27,708 INFO L225 Difference]: With dead ends: 31 [2020-09-04 21:56:27,708 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 21:56:27,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:56:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 21:56:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 21:56:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 21:56:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 21:56:27,720 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-04 21:56:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:27,720 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 21:56:27,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 21:56:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 21:56:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 21:56:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:27,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:27,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:56:27,723 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-04 21:56:27,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:27,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863410351] [2020-09-04 21:56:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 21:56:28,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863410351] [2020-09-04 21:56:28,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:28,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 21:56:28,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844426643] [2020-09-04 21:56:28,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 21:56:28,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:28,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 21:56:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:56:28,039 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 21:56:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:28,198 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-04 21:56:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 21:56:28,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-04 21:56:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:28,202 INFO L225 Difference]: With dead ends: 35 [2020-09-04 21:56:28,203 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 21:56:28,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:56:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 21:56:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 21:56:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 21:56:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-04 21:56:28,225 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-04 21:56:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:28,225 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-04 21:56:28,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 21:56:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-04 21:56:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 21:56:28,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:28,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:28,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:56:28,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-04 21:56:28,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:28,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223331279] [2020-09-04 21:56:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 21:56:28,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223331279] [2020-09-04 21:56:28,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:28,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 21:56:28,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100344439] [2020-09-04 21:56:28,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 21:56:28,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:28,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 21:56:28,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 21:56:28,628 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-04 21:56:28,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:28,804 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-04 21:56:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 21:56:28,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-04 21:56:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:28,807 INFO L225 Difference]: With dead ends: 39 [2020-09-04 21:56:28,807 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 21:56:28,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-04 21:56:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 21:56:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-04 21:56:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 21:56:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-04 21:56:28,818 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-04 21:56:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:28,819 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-04 21:56:28,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 21:56:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-04 21:56:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 21:56:28,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:28,820 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:28,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:56:28,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-04 21:56:28,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:28,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6581232] [2020-09-04 21:56:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 21:56:29,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6581232] [2020-09-04 21:56:29,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:29,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 21:56:29,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184521051] [2020-09-04 21:56:29,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 21:56:29,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:29,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 21:56:29,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 21:56:29,134 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-04 21:56:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:29,334 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-04 21:56:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 21:56:29,335 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-04 21:56:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:29,336 INFO L225 Difference]: With dead ends: 43 [2020-09-04 21:56:29,336 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 21:56:29,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-04 21:56:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 21:56:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 21:56:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 21:56:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-04 21:56:29,347 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-04 21:56:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:29,348 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-04 21:56:29,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 21:56:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-04 21:56:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 21:56:29,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:29,350 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:29,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 21:56:29,351 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-04 21:56:29,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:29,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259141236] [2020-09-04 21:56:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 21:56:29,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259141236] [2020-09-04 21:56:29,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:29,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 21:56:29,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274347639] [2020-09-04 21:56:29,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 21:56:29,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:29,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 21:56:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 21:56:29,752 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-04 21:56:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:30,004 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 21:56:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 21:56:30,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-04 21:56:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:30,007 INFO L225 Difference]: With dead ends: 47 [2020-09-04 21:56:30,007 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 21:56:30,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:56:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 21:56:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 21:56:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 21:56:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-04 21:56:30,019 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-04 21:56:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:30,019 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-04 21:56:30,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 21:56:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-04 21:56:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 21:56:30,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:30,021 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:30,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 21:56:30,022 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:30,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:30,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-04 21:56:30,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:30,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554690125] [2020-09-04 21:56:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-04 21:56:30,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554690125] [2020-09-04 21:56:30,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:30,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 21:56:30,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605709858] [2020-09-04 21:56:30,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 21:56:30,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 21:56:30,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 21:56:30,510 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-04 21:56:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:30,844 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-04 21:56:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 21:56:30,845 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-04 21:56:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:30,847 INFO L225 Difference]: With dead ends: 51 [2020-09-04 21:56:30,847 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 21:56:30,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-04 21:56:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 21:56:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 21:56:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 21:56:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-04 21:56:30,857 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-04 21:56:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:30,858 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-04 21:56:30,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 21:56:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-04 21:56:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 21:56:30,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:30,860 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:30,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 21:56:30,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:30,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:30,861 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-04 21:56:30,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:30,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636309168] [2020-09-04 21:56:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 21:56:31,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636309168] [2020-09-04 21:56:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:31,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 21:56:31,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137580895] [2020-09-04 21:56:31,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 21:56:31,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 21:56:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 21:56:31,471 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-04 21:56:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:31,878 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-04 21:56:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 21:56:31,879 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-04 21:56:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:31,881 INFO L225 Difference]: With dead ends: 55 [2020-09-04 21:56:31,882 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 21:56:31,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-04 21:56:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 21:56:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-04 21:56:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 21:56:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-04 21:56:31,894 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-04 21:56:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:31,895 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-04 21:56:31,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 21:56:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-04 21:56:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-04 21:56:31,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:31,897 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:31,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 21:56:31,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-04 21:56:31,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:31,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012585976] [2020-09-04 21:56:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-04 21:56:32,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012585976] [2020-09-04 21:56:32,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:32,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-04 21:56:32,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418671926] [2020-09-04 21:56:32,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 21:56:32,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:32,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 21:56:32,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:56:32,526 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-04 21:56:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:33,024 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-04 21:56:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 21:56:33,025 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-04 21:56:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:33,030 INFO L225 Difference]: With dead ends: 59 [2020-09-04 21:56:33,030 INFO L226 Difference]: Without dead ends: 54 [2020-09-04 21:56:33,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-04 21:56:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-04 21:56:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-04 21:56:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 21:56:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-04 21:56:33,053 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-04 21:56:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:33,053 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-04 21:56:33,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 21:56:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-04 21:56:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 21:56:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:33,059 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:33,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 21:56:33,059 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:33,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-04 21:56:33,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:33,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767185899] [2020-09-04 21:56:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-04 21:56:33,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767185899] [2020-09-04 21:56:33,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:33,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 21:56:33,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642539265] [2020-09-04 21:56:33,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 21:56:33,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 21:56:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 21:56:33,892 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-04 21:56:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:34,474 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-04 21:56:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 21:56:34,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-04 21:56:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:34,476 INFO L225 Difference]: With dead ends: 63 [2020-09-04 21:56:34,476 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 21:56:34,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 21:56:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 21:56:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-04 21:56:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 21:56:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-04 21:56:34,500 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-04 21:56:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:34,500 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-04 21:56:34,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 21:56:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-04 21:56:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 21:56:34,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:34,502 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:34,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 21:56:34,503 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-04 21:56:34,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:34,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321312339] [2020-09-04 21:56:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-04 21:56:35,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321312339] [2020-09-04 21:56:35,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:35,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-04 21:56:35,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282997641] [2020-09-04 21:56:35,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 21:56:35,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:35,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 21:56:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 21:56:35,455 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-04 21:56:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:36,122 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-04 21:56:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 21:56:36,123 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-04 21:56:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:36,124 INFO L225 Difference]: With dead ends: 67 [2020-09-04 21:56:36,124 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 21:56:36,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 21:56:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 21:56:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 21:56:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 21:56:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-04 21:56:36,135 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-04 21:56:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:36,135 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-04 21:56:36,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 21:56:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-04 21:56:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-04 21:56:36,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:36,137 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:36,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 21:56:36,137 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:36,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-04 21:56:36,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:36,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581226766] [2020-09-04 21:56:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-04 21:56:37,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581226766] [2020-09-04 21:56:37,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:37,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-04 21:56:37,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885614959] [2020-09-04 21:56:37,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 21:56:37,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 21:56:37,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 21:56:37,074 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-04 21:56:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:37,920 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-04 21:56:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 21:56:37,921 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-04 21:56:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:37,935 INFO L225 Difference]: With dead ends: 71 [2020-09-04 21:56:37,936 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 21:56:37,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 21:56:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 21:56:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 21:56:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 21:56:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-04 21:56:37,946 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-04 21:56:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:37,947 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-04 21:56:37,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 21:56:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-04 21:56:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 21:56:37,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:37,948 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:37,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 21:56:37,949 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:37,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-04 21:56:37,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:37,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665167797] [2020-09-04 21:56:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-04 21:56:39,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665167797] [2020-09-04 21:56:39,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:39,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-04 21:56:39,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595140231] [2020-09-04 21:56:39,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 21:56:39,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:39,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 21:56:39,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 21:56:39,280 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-04 21:56:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:40,265 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-04 21:56:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 21:56:40,266 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-04 21:56:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:40,267 INFO L225 Difference]: With dead ends: 75 [2020-09-04 21:56:40,267 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 21:56:40,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 21:56:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 21:56:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 21:56:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 21:56:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-04 21:56:40,280 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-04 21:56:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:40,281 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-04 21:56:40,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 21:56:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-04 21:56:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-04 21:56:40,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:40,282 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:40,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 21:56:40,283 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-04 21:56:40,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:40,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423398333] [2020-09-04 21:56:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-04 21:56:41,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423398333] [2020-09-04 21:56:41,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:41,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 21:56:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681617655] [2020-09-04 21:56:41,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 21:56:41,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 21:56:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 21:56:41,799 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-04 21:56:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:42,940 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-04 21:56:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 21:56:42,940 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-04 21:56:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:42,941 INFO L225 Difference]: With dead ends: 79 [2020-09-04 21:56:42,942 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 21:56:42,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 21:56:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 21:56:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-04 21:56:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 21:56:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-04 21:56:42,955 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-04 21:56:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:42,956 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-04 21:56:42,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 21:56:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-04 21:56:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-04 21:56:42,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:42,958 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:42,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 21:56:42,958 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-04 21:56:42,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:42,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3811519] [2020-09-04 21:56:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-04 21:56:44,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3811519] [2020-09-04 21:56:44,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:44,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-04 21:56:44,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84093997] [2020-09-04 21:56:44,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 21:56:44,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:44,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 21:56:44,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 21:56:44,581 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 33 states. [2020-09-04 21:56:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:45,853 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-09-04 21:56:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 21:56:45,854 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-09-04 21:56:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:45,856 INFO L225 Difference]: With dead ends: 83 [2020-09-04 21:56:45,856 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 21:56:45,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 21:56:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 21:56:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-04 21:56:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 21:56:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-04 21:56:45,879 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 114 [2020-09-04 21:56:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:45,881 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-04 21:56:45,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 21:56:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-04 21:56:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-04 21:56:45,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:45,885 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:45,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 21:56:45,886 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:45,887 INFO L82 PathProgramCache]: Analyzing trace with hash -751861855, now seen corresponding path program 15 times [2020-09-04 21:56:45,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:45,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848955752] [2020-09-04 21:56:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-09-04 21:56:47,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848955752] [2020-09-04 21:56:47,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:47,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-04 21:56:47,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656588765] [2020-09-04 21:56:47,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 21:56:47,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:47,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 21:56:47,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 21:56:47,795 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 35 states. [2020-09-04 21:56:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:49,213 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-04 21:56:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 21:56:49,214 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 121 [2020-09-04 21:56:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:49,216 INFO L225 Difference]: With dead ends: 87 [2020-09-04 21:56:49,216 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 21:56:49,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 21:56:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 21:56:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-04 21:56:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-04 21:56:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-09-04 21:56:49,226 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 121 [2020-09-04 21:56:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:49,227 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-09-04 21:56:49,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 21:56:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-09-04 21:56:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 21:56:49,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:49,229 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:49,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 21:56:49,230 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2017083634, now seen corresponding path program 16 times [2020-09-04 21:56:49,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:49,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58677679] [2020-09-04 21:56:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-09-04 21:56:51,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58677679] [2020-09-04 21:56:51,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:51,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-04 21:56:51,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156507422] [2020-09-04 21:56:51,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 21:56:51,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 21:56:51,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 21:56:51,189 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 37 states. [2020-09-04 21:56:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:52,715 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-04 21:56:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 21:56:52,715 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2020-09-04 21:56:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:52,717 INFO L225 Difference]: With dead ends: 91 [2020-09-04 21:56:52,718 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 21:56:52,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=139, Invalid=2723, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 21:56:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 21:56:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-04 21:56:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 21:56:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-09-04 21:56:52,731 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 128 [2020-09-04 21:56:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:52,732 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-09-04 21:56:52,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 21:56:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-09-04 21:56:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-04 21:56:52,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:52,734 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:52,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 21:56:52,734 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash -750736845, now seen corresponding path program 17 times [2020-09-04 21:56:52,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:52,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315842389] [2020-09-04 21:56:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-09-04 21:56:54,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315842389] [2020-09-04 21:56:54,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:54,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 21:56:54,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620022319] [2020-09-04 21:56:54,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 21:56:54,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 21:56:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 21:56:54,579 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 39 states. [2020-09-04 21:56:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:56,308 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-09-04 21:56:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 21:56:56,312 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 135 [2020-09-04 21:56:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:56,314 INFO L225 Difference]: With dead ends: 95 [2020-09-04 21:56:56,314 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 21:56:56,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 21:56:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 21:56:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-04 21:56:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 21:56:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-09-04 21:56:56,325 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-09-04 21:56:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:56,325 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-09-04 21:56:56,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 21:56:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-09-04 21:56:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 21:56:56,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:56,327 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:56,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 21:56:56,328 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 112489604, now seen corresponding path program 18 times [2020-09-04 21:56:56,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:56,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222490492] [2020-09-04 21:56:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-09-04 21:56:58,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222490492] [2020-09-04 21:56:58,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:58,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-04 21:56:58,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074599948] [2020-09-04 21:56:58,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 21:56:58,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:58,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 21:56:58,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 21:56:58,404 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 41 states. [2020-09-04 21:57:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:00,351 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-04 21:57:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 21:57:00,352 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 142 [2020-09-04 21:57:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:00,353 INFO L225 Difference]: With dead ends: 99 [2020-09-04 21:57:00,354 INFO L226 Difference]: Without dead ends: 94 [2020-09-04 21:57:00,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 21:57:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-04 21:57:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-04 21:57:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 21:57:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-04 21:57:00,365 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 142 [2020-09-04 21:57:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:00,366 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-04 21:57:00,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 21:57:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-04 21:57:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 21:57:00,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:00,368 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:00,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 21:57:00,369 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash 374596293, now seen corresponding path program 19 times [2020-09-04 21:57:00,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:00,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749405837] [2020-09-04 21:57:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-09-04 21:57:02,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749405837] [2020-09-04 21:57:02,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:02,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-09-04 21:57:02,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665613599] [2020-09-04 21:57:02,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 21:57:02,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 21:57:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 21:57:02,710 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 43 states. [2020-09-04 21:57:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:04,839 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-09-04 21:57:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 21:57:04,840 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 149 [2020-09-04 21:57:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:04,842 INFO L225 Difference]: With dead ends: 103 [2020-09-04 21:57:04,842 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 21:57:04,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=163, Invalid=3743, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 21:57:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 21:57:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-04 21:57:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 21:57:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-09-04 21:57:04,853 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 149 [2020-09-04 21:57:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:04,854 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-09-04 21:57:04,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 21:57:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-09-04 21:57:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 21:57:04,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:04,856 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:04,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 21:57:04,857 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1900661226, now seen corresponding path program 20 times [2020-09-04 21:57:04,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:04,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570372483] [2020-09-04 21:57:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:04,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-09-04 21:57:07,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570372483] [2020-09-04 21:57:07,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:07,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-04 21:57:07,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790336193] [2020-09-04 21:57:07,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 21:57:07,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:07,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 21:57:07,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 21:57:07,476 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 45 states. [2020-09-04 21:57:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:09,858 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-09-04 21:57:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 21:57:09,859 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 156 [2020-09-04 21:57:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:09,861 INFO L225 Difference]: With dead ends: 107 [2020-09-04 21:57:09,861 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 21:57:09,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=171, Invalid=4119, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 21:57:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 21:57:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-04 21:57:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 21:57:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-09-04 21:57:09,873 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 156 [2020-09-04 21:57:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:09,873 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-09-04 21:57:09,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 21:57:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-09-04 21:57:09,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 21:57:09,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:09,877 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:09,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 21:57:09,878 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1591006889, now seen corresponding path program 21 times [2020-09-04 21:57:09,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:09,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025388330] [2020-09-04 21:57:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-09-04 21:57:12,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025388330] [2020-09-04 21:57:12,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:12,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-09-04 21:57:12,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240147764] [2020-09-04 21:57:12,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 21:57:12,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:12,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 21:57:12,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 21:57:12,794 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 47 states. [2020-09-04 21:57:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:15,409 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-09-04 21:57:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 21:57:15,416 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 163 [2020-09-04 21:57:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:15,418 INFO L225 Difference]: With dead ends: 111 [2020-09-04 21:57:15,418 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 21:57:15,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 21:57:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 21:57:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-04 21:57:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 21:57:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-04 21:57:15,443 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 163 [2020-09-04 21:57:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:15,444 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-04 21:57:15,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 21:57:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-04 21:57:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 21:57:15,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:15,445 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:15,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 21:57:15,446 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2196904, now seen corresponding path program 22 times [2020-09-04 21:57:15,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:15,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838209331] [2020-09-04 21:57:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-09-04 21:57:18,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838209331] [2020-09-04 21:57:18,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:18,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-09-04 21:57:18,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053762598] [2020-09-04 21:57:18,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 21:57:18,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:18,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 21:57:18,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 21:57:18,540 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 49 states. [2020-09-04 21:57:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:21,466 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2020-09-04 21:57:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 21:57:21,467 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2020-09-04 21:57:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:21,469 INFO L225 Difference]: With dead ends: 115 [2020-09-04 21:57:21,469 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 21:57:21,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=187, Invalid=4925, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 21:57:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 21:57:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 21:57:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 21:57:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-09-04 21:57:21,483 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 170 [2020-09-04 21:57:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:21,484 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-09-04 21:57:21,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 21:57:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-09-04 21:57:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 21:57:21,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:21,486 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:21,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 21:57:21,486 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1568113175, now seen corresponding path program 23 times [2020-09-04 21:57:21,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:21,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970145586] [2020-09-04 21:57:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:24,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-09-04 21:57:24,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970145586] [2020-09-04 21:57:24,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:24,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-09-04 21:57:24,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456266142] [2020-09-04 21:57:24,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 21:57:24,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 21:57:24,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 21:57:24,850 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 51 states. [2020-09-04 21:57:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:27,970 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-09-04 21:57:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 21:57:27,971 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2020-09-04 21:57:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:27,973 INFO L225 Difference]: With dead ends: 119 [2020-09-04 21:57:27,973 INFO L226 Difference]: Without dead ends: 114 [2020-09-04 21:57:27,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=195, Invalid=5355, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 21:57:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-04 21:57:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-04 21:57:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-04 21:57:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-04 21:57:27,986 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 177 [2020-09-04 21:57:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:27,986 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-04 21:57:27,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 21:57:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-04 21:57:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 21:57:27,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:27,988 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:27,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 21:57:27,989 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1126669510, now seen corresponding path program 24 times [2020-09-04 21:57:27,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:27,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255398271] [2020-09-04 21:57:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-09-04 21:57:31,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255398271] [2020-09-04 21:57:31,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:31,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-09-04 21:57:31,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678115502] [2020-09-04 21:57:31,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 21:57:31,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:31,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 21:57:31,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 21:57:31,647 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 53 states. [2020-09-04 21:57:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:35,043 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2020-09-04 21:57:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 21:57:35,045 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 184 [2020-09-04 21:57:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:35,048 INFO L225 Difference]: With dead ends: 123 [2020-09-04 21:57:35,048 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 21:57:35,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=203, Invalid=5803, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 21:57:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 21:57:35,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-09-04 21:57:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 21:57:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-09-04 21:57:35,061 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 184 [2020-09-04 21:57:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:35,062 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-09-04 21:57:35,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 21:57:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-09-04 21:57:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 21:57:35,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:35,063 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:35,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 21:57:35,064 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:35,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1932386427, now seen corresponding path program 25 times [2020-09-04 21:57:35,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:35,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983866107] [2020-09-04 21:57:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-09-04 21:57:38,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983866107] [2020-09-04 21:57:38,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:38,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-09-04 21:57:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985236673] [2020-09-04 21:57:38,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 21:57:38,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 21:57:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 21:57:38,772 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 55 states. [2020-09-04 21:57:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:42,270 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-09-04 21:57:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 21:57:42,271 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 191 [2020-09-04 21:57:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:42,272 INFO L225 Difference]: With dead ends: 127 [2020-09-04 21:57:42,273 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 21:57:42,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 21:57:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 21:57:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-04 21:57:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 21:57:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-09-04 21:57:42,285 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 191 [2020-09-04 21:57:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:42,286 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-09-04 21:57:42,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 21:57:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-09-04 21:57:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 21:57:42,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:42,287 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:42,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 21:57:42,288 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1732456756, now seen corresponding path program 26 times [2020-09-04 21:57:42,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:42,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802549224] [2020-09-04 21:57:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:45,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-09-04 21:57:46,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802549224] [2020-09-04 21:57:46,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:46,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-09-04 21:57:46,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121779534] [2020-09-04 21:57:46,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 21:57:46,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:46,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 21:57:46,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 21:57:46,294 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-09-04 21:57:50,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:50,220 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-09-04 21:57:50,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 21:57:50,221 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 198 [2020-09-04 21:57:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:50,223 INFO L225 Difference]: With dead ends: 131 [2020-09-04 21:57:50,223 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 21:57:50,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=219, Invalid=6753, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 21:57:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 21:57:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-04 21:57:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 21:57:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-09-04 21:57:50,232 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 198 [2020-09-04 21:57:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:50,233 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-09-04 21:57:50,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 21:57:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-09-04 21:57:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 21:57:50,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:50,234 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:50,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 21:57:50,235 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:50,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1780657907, now seen corresponding path program 27 times [2020-09-04 21:57:50,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:50,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155776532] [2020-09-04 21:57:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-09-04 21:57:54,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155776532] [2020-09-04 21:57:54,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:54,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-09-04 21:57:54,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212540184] [2020-09-04 21:57:54,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 21:57:54,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 21:57:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 21:57:54,539 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 59 states. [2020-09-04 21:57:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:58,594 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-09-04 21:57:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 21:57:58,595 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 205 [2020-09-04 21:57:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:58,596 INFO L225 Difference]: With dead ends: 135 [2020-09-04 21:57:58,597 INFO L226 Difference]: Without dead ends: 130 [2020-09-04 21:57:58,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=227, Invalid=7255, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 21:57:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-04 21:57:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-04 21:57:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-04 21:57:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-09-04 21:57:58,613 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 205 [2020-09-04 21:57:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:58,614 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-09-04 21:57:58,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 21:57:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-09-04 21:57:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 21:57:58,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:58,615 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:58,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 21:57:58,616 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -642725794, now seen corresponding path program 28 times [2020-09-04 21:57:58,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:58,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570630004] [2020-09-04 21:57:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-09-04 21:58:03,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570630004] [2020-09-04 21:58:03,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:03,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-09-04 21:58:03,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283093509] [2020-09-04 21:58:03,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 21:58:03,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:03,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 21:58:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 21:58:03,074 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 61 states. [2020-09-04 21:58:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:07,644 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-09-04 21:58:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 21:58:07,645 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 212 [2020-09-04 21:58:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:07,647 INFO L225 Difference]: With dead ends: 139 [2020-09-04 21:58:07,647 INFO L226 Difference]: Without dead ends: 134 [2020-09-04 21:58:07,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=235, Invalid=7775, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 21:58:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-04 21:58:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-04 21:58:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-04 21:58:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-04 21:58:07,657 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 212 [2020-09-04 21:58:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:07,657 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-04 21:58:07,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 21:58:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-04 21:58:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 21:58:07,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:07,659 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:07,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 21:58:07,660 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1218916449, now seen corresponding path program 29 times [2020-09-04 21:58:07,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:07,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4868700] [2020-09-04 21:58:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:07,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-09-04 21:58:12,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4868700] [2020-09-04 21:58:12,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:12,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-09-04 21:58:12,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814188188] [2020-09-04 21:58:12,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 21:58:12,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 21:58:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 21:58:12,760 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 63 states. [2020-09-04 21:58:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:17,701 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2020-09-04 21:58:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 21:58:17,702 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 219 [2020-09-04 21:58:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:17,704 INFO L225 Difference]: With dead ends: 143 [2020-09-04 21:58:17,704 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 21:58:17,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=243, Invalid=8313, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 21:58:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 21:58:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-04 21:58:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 21:58:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-09-04 21:58:17,713 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 219 [2020-09-04 21:58:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:17,714 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-09-04 21:58:17,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 21:58:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-09-04 21:58:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-04 21:58:17,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:17,716 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:17,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 21:58:17,716 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:17,716 INFO L82 PathProgramCache]: Analyzing trace with hash 932597744, now seen corresponding path program 30 times [2020-09-04 21:58:17,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:17,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033220325] [2020-09-04 21:58:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:17,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-09-04 21:58:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033220325] [2020-09-04 21:58:23,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:23,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-09-04 21:58:23,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797248959] [2020-09-04 21:58:23,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 21:58:23,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 21:58:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 21:58:23,172 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 65 states. [2020-09-04 21:58:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:28,459 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-09-04 21:58:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 21:58:28,460 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 226 [2020-09-04 21:58:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:28,462 INFO L225 Difference]: With dead ends: 147 [2020-09-04 21:58:28,462 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 21:58:28,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=251, Invalid=8869, Unknown=0, NotChecked=0, Total=9120 [2020-09-04 21:58:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 21:58:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-09-04 21:58:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-04 21:58:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-09-04 21:58:28,473 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 226 [2020-09-04 21:58:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:28,474 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-09-04 21:58:28,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 21:58:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-09-04 21:58:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-04 21:58:28,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:28,476 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:28,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 21:58:28,477 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1369285583, now seen corresponding path program 31 times [2020-09-04 21:58:28,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:28,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268111055] [2020-09-04 21:58:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-09-04 21:58:34,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268111055] [2020-09-04 21:58:34,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:34,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-09-04 21:58:34,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171436116] [2020-09-04 21:58:34,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 21:58:34,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:34,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 21:58:34,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 21:58:34,475 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 67 states. [2020-09-04 21:58:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:40,243 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-09-04 21:58:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 21:58:40,244 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 233 [2020-09-04 21:58:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:40,246 INFO L225 Difference]: With dead ends: 151 [2020-09-04 21:58:40,246 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 21:58:40,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=259, Invalid=9443, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 21:58:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 21:58:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-04 21:58:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 21:58:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-09-04 21:58:40,259 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 233 [2020-09-04 21:58:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:40,259 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-09-04 21:58:40,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 21:58:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-09-04 21:58:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 21:58:40,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:40,262 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:40,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 21:58:40,262 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash -598776446, now seen corresponding path program 32 times [2020-09-04 21:58:40,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:40,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386839861] [2020-09-04 21:58:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-09-04 21:58:46,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386839861] [2020-09-04 21:58:46,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:46,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-09-04 21:58:46,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785973726] [2020-09-04 21:58:46,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 21:58:46,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 21:58:46,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 21:58:46,743 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 69 states. [2020-09-04 21:58:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:52,884 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-09-04 21:58:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 21:58:52,885 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 240 [2020-09-04 21:58:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:52,888 INFO L225 Difference]: With dead ends: 155 [2020-09-04 21:58:52,888 INFO L226 Difference]: Without dead ends: 150 [2020-09-04 21:58:52,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=267, Invalid=10035, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 21:58:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-04 21:58:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-04 21:58:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-04 21:58:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-09-04 21:58:52,899 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 240 [2020-09-04 21:58:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:52,899 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-09-04 21:58:52,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 21:58:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-09-04 21:58:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-04 21:58:52,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:52,901 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:52,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 21:58:52,901 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2075915971, now seen corresponding path program 33 times [2020-09-04 21:58:52,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:52,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284029251] [2020-09-04 21:58:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-09-04 21:58:59,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284029251] [2020-09-04 21:58:59,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:59,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-09-04 21:58:59,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720629093] [2020-09-04 21:58:59,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 21:58:59,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:59,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 21:58:59,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 21:58:59,784 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 71 states. [2020-09-04 21:59:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:06,192 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2020-09-04 21:59:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 21:59:06,193 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 247 [2020-09-04 21:59:06,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:06,195 INFO L225 Difference]: With dead ends: 159 [2020-09-04 21:59:06,195 INFO L226 Difference]: Without dead ends: 154 [2020-09-04 21:59:06,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=275, Invalid=10645, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 21:59:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-04 21:59:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-04 21:59:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-04 21:59:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-04 21:59:06,210 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 247 [2020-09-04 21:59:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:06,210 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-04 21:59:06,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 21:59:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-04 21:59:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 21:59:06,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:06,213 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:06,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 21:59:06,213 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:06,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1673398548, now seen corresponding path program 34 times [2020-09-04 21:59:06,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:06,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057932874] [2020-09-04 21:59:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-09-04 21:59:13,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057932874] [2020-09-04 21:59:13,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:13,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-09-04 21:59:13,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804758621] [2020-09-04 21:59:13,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 21:59:13,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 21:59:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 21:59:13,960 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 73 states. [2020-09-04 21:59:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:20,823 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2020-09-04 21:59:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 21:59:20,824 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 254 [2020-09-04 21:59:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:20,826 INFO L225 Difference]: With dead ends: 163 [2020-09-04 21:59:20,826 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 21:59:20,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=283, Invalid=11273, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 21:59:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 21:59:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 21:59:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 21:59:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-09-04 21:59:20,840 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 254 [2020-09-04 21:59:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:20,840 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-09-04 21:59:20,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 21:59:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-09-04 21:59:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-04 21:59:20,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:20,844 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:20,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 21:59:20,844 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1244110677, now seen corresponding path program 35 times [2020-09-04 21:59:20,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:20,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919425882] [2020-09-04 21:59:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:25,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-09-04 21:59:28,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919425882] [2020-09-04 21:59:28,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:28,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-09-04 21:59:28,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115955507] [2020-09-04 21:59:28,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 21:59:28,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:28,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 21:59:28,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 21:59:28,347 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 75 states. [2020-09-04 21:59:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:35,369 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-09-04 21:59:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 21:59:35,370 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 261 [2020-09-04 21:59:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:35,372 INFO L225 Difference]: With dead ends: 167 [2020-09-04 21:59:35,372 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 21:59:35,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=291, Invalid=11919, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 21:59:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 21:59:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-04 21:59:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 21:59:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-09-04 21:59:35,383 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 261 [2020-09-04 21:59:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:35,384 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-09-04 21:59:35,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 21:59:35,384 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-09-04 21:59:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 21:59:35,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:35,386 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:35,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 21:59:35,386 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:35,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:35,386 INFO L82 PathProgramCache]: Analyzing trace with hash -607896922, now seen corresponding path program 36 times [2020-09-04 21:59:35,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:35,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612057768] [2020-09-04 21:59:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:38,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:40,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-09-04 21:59:43,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612057768] [2020-09-04 21:59:43,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:43,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-09-04 21:59:43,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442347594] [2020-09-04 21:59:43,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 21:59:43,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:43,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 21:59:43,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 21:59:43,205 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 77 states. [2020-09-04 21:59:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:50,808 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-04 21:59:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 21:59:50,810 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 268 [2020-09-04 21:59:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:50,812 INFO L225 Difference]: With dead ends: 171 [2020-09-04 21:59:50,812 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 21:59:50,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=299, Invalid=12583, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 21:59:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 21:59:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-04 21:59:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 21:59:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-09-04 21:59:50,824 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 268 [2020-09-04 21:59:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:50,824 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-09-04 21:59:50,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 21:59:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-09-04 21:59:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 21:59:50,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:50,827 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 21:59:50,827 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1852265959, now seen corresponding path program 37 times [2020-09-04 21:59:50,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:50,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176351025] [2020-09-04 21:59:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:53,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:54,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:55,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-09-04 21:59:59,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176351025] [2020-09-04 21:59:59,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:59,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-09-04 21:59:59,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121215266] [2020-09-04 21:59:59,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 21:59:59,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 21:59:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 21:59:59,455 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 79 states. [2020-09-04 22:00:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:08,370 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2020-09-04 22:00:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 22:00:08,371 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 275 [2020-09-04 22:00:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:08,373 INFO L225 Difference]: With dead ends: 175 [2020-09-04 22:00:08,373 INFO L226 Difference]: Without dead ends: 170 [2020-09-04 22:00:08,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=307, Invalid=13265, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 22:00:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-04 22:00:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-04 22:00:08,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-04 22:00:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-09-04 22:00:08,386 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 275 [2020-09-04 22:00:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:08,386 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-09-04 22:00:08,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 22:00:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-09-04 22:00:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-04 22:00:08,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:08,389 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:08,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 22:00:08,389 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1002177992, now seen corresponding path program 38 times [2020-09-04 22:00:08,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:08,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212663168] [2020-09-04 22:00:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:09,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:13,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:14,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:16,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-09-04 22:00:17,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212663168] [2020-09-04 22:00:17,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:17,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-09-04 22:00:17,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159173312] [2020-09-04 22:00:17,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 22:00:17,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:17,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 22:00:17,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 22:00:17,995 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 81 states. [2020-09-04 22:00:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:27,087 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-09-04 22:00:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 22:00:27,088 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 282 [2020-09-04 22:00:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:27,090 INFO L225 Difference]: With dead ends: 179 [2020-09-04 22:00:27,091 INFO L226 Difference]: Without dead ends: 174 [2020-09-04 22:00:27,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=315, Invalid=13965, Unknown=0, NotChecked=0, Total=14280 [2020-09-04 22:00:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-04 22:00:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-04 22:00:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-04 22:00:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-04 22:00:27,102 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 282 [2020-09-04 22:00:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:27,103 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-04 22:00:27,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 22:00:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-04 22:00:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-04 22:00:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:27,105 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:27,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 22:00:27,105 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1732057721, now seen corresponding path program 39 times [2020-09-04 22:00:27,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:27,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262605082] [2020-09-04 22:00:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:31,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:33,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-09-04 22:00:37,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262605082] [2020-09-04 22:00:37,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:37,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-09-04 22:00:37,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404550828] [2020-09-04 22:00:37,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 22:00:37,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:37,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 22:00:37,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 22:00:37,037 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 83 states. [2020-09-04 22:00:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:47,135 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2020-09-04 22:00:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 22:00:47,137 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 289 [2020-09-04 22:00:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:47,140 INFO L225 Difference]: With dead ends: 183 [2020-09-04 22:00:47,140 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 22:00:47,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=323, Invalid=14683, Unknown=0, NotChecked=0, Total=15006 [2020-09-04 22:00:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 22:00:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-04 22:00:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 22:00:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-09-04 22:00:47,155 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 289 [2020-09-04 22:00:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:47,156 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-09-04 22:00:47,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 22:00:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-09-04 22:00:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-04 22:00:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:47,159 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:47,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 22:00:47,159 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash 253708234, now seen corresponding path program 40 times [2020-09-04 22:00:47,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:47,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380254959] [2020-09-04 22:00:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:52,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:52,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:53,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-09-04 22:00:57,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380254959] [2020-09-04 22:00:57,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:57,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-09-04 22:00:57,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33470417] [2020-09-04 22:00:57,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 22:00:57,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:57,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 22:00:57,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 22:00:57,875 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 85 states. [2020-09-04 22:01:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:08,455 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2020-09-04 22:01:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 22:01:08,457 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 296 [2020-09-04 22:01:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:08,460 INFO L225 Difference]: With dead ends: 187 [2020-09-04 22:01:08,460 INFO L226 Difference]: Without dead ends: 182 [2020-09-04 22:01:08,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=331, Invalid=15419, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 22:01:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-04 22:01:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-04 22:01:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-04 22:01:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-09-04 22:01:08,478 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 296 [2020-09-04 22:01:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:08,479 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-09-04 22:01:08,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 22:01:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-09-04 22:01:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-04 22:01:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:08,481 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 22:01:08,482 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -580195061, now seen corresponding path program 41 times [2020-09-04 22:01:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189114470] [2020-09-04 22:01:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:01:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:11,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:11,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:12,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:12,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:13,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-09-04 22:01:20,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189114470] [2020-09-04 22:01:20,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:20,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-09-04 22:01:20,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883459762] [2020-09-04 22:01:20,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 22:01:20,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:20,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 22:01:20,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 22:01:20,028 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 87 states. [2020-09-04 22:01:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:31,734 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-09-04 22:01:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 22:01:31,735 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 303 [2020-09-04 22:01:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:31,737 INFO L225 Difference]: With dead ends: 191 [2020-09-04 22:01:31,737 INFO L226 Difference]: Without dead ends: 186 [2020-09-04 22:01:31,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=339, Invalid=16173, Unknown=0, NotChecked=0, Total=16512 [2020-09-04 22:01:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-04 22:01:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-04 22:01:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-04 22:01:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-09-04 22:01:31,748 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 303 [2020-09-04 22:01:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:31,749 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-09-04 22:01:31,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 22:01:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-09-04 22:01:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 22:01:31,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:31,751 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:31,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 22:01:31,751 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 540549980, now seen corresponding path program 42 times [2020-09-04 22:01:31,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:31,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25768293] [2020-09-04 22:01:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:01:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:40,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-09-04 22:01:43,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25768293] [2020-09-04 22:01:43,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:43,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-09-04 22:01:43,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732878906] [2020-09-04 22:01:43,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 22:01:43,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:43,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 22:01:43,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 22:01:43,453 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 89 states. [2020-09-04 22:01:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:54,985 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2020-09-04 22:01:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 22:01:54,987 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 310 [2020-09-04 22:01:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:54,989 INFO L225 Difference]: With dead ends: 195 [2020-09-04 22:01:54,989 INFO L226 Difference]: Without dead ends: 190 [2020-09-04 22:01:54,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=347, Invalid=16945, Unknown=0, NotChecked=0, Total=17292 [2020-09-04 22:01:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-04 22:01:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-04 22:01:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-04 22:01:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-09-04 22:01:55,003 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 310 [2020-09-04 22:01:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:55,004 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-09-04 22:01:55,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 22:01:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-09-04 22:01:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 22:01:55,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:55,006 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:55,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 22:01:55,007 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1548563043, now seen corresponding path program 43 times [2020-09-04 22:01:55,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:55,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603288163] [2020-09-04 22:01:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:01:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:56,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-09-04 22:02:07,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603288163] [2020-09-04 22:02:07,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:02:07,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-09-04 22:02:07,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774289137] [2020-09-04 22:02:07,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 22:02:07,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:02:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 22:02:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 22:02:07,261 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 91 states. [2020-09-04 22:02:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:02:19,637 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2020-09-04 22:02:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 22:02:19,639 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 317 [2020-09-04 22:02:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:02:19,640 INFO L225 Difference]: With dead ends: 199 [2020-09-04 22:02:19,641 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 22:02:19,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=355, Invalid=17735, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 22:02:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 22:02:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-04 22:02:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 22:02:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-04 22:02:19,651 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 317 [2020-09-04 22:02:19,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:02:19,652 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-04 22:02:19,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 22:02:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-04 22:02:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 22:02:19,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:02:19,654 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:02:19,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 22:02:19,655 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:02:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:02:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash -848261906, now seen corresponding path program 44 times [2020-09-04 22:02:19,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:02:19,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981873021] [2020-09-04 22:02:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:02:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:02:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:22,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-09-04 22:02:32,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981873021] [2020-09-04 22:02:32,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:02:32,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-09-04 22:02:32,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936101064] [2020-09-04 22:02:32,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 22:02:32,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:02:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 22:02:32,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 22:02:32,377 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 93 states. [2020-09-04 22:02:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:02:45,272 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2020-09-04 22:02:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 22:02:45,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 324 [2020-09-04 22:02:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:02:45,275 INFO L225 Difference]: With dead ends: 203 [2020-09-04 22:02:45,276 INFO L226 Difference]: Without dead ends: 198 [2020-09-04 22:02:45,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=363, Invalid=18543, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 22:02:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-04 22:02:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-04 22:02:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 22:02:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-09-04 22:02:45,287 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 324 [2020-09-04 22:02:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:02:45,288 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-09-04 22:02:45,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 22:02:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-09-04 22:02:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-04 22:02:45,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:02:45,290 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:02:45,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 22:02:45,291 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:02:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:02:45,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1227441105, now seen corresponding path program 45 times [2020-09-04 22:02:45,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:02:45,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392454397] [2020-09-04 22:02:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:02:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:02:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:51,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:56,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-09-04 22:02:58,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392454397] [2020-09-04 22:02:58,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:02:58,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-09-04 22:02:58,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045565774] [2020-09-04 22:02:58,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 22:02:58,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:02:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 22:02:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 22:02:58,920 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 95 states. [2020-09-04 22:03:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:03:13,147 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2020-09-04 22:03:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 22:03:13,148 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 331 [2020-09-04 22:03:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:03:13,150 INFO L225 Difference]: With dead ends: 207 [2020-09-04 22:03:13,151 INFO L226 Difference]: Without dead ends: 202 [2020-09-04 22:03:13,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=371, Invalid=19369, Unknown=0, NotChecked=0, Total=19740 [2020-09-04 22:03:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-04 22:03:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-04 22:03:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-04 22:03:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-09-04 22:03:13,163 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 331 [2020-09-04 22:03:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:03:13,164 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-09-04 22:03:13,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 22:03:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-09-04 22:03:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-04 22:03:13,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:03:13,167 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:03:13,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 22:03:13,167 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:03:13,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:03:13,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1588233344, now seen corresponding path program 46 times [2020-09-04 22:03:13,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:03:13,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696476111] [2020-09-04 22:03:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:03:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:03:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:03:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:18,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:19,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:26,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-09-04 22:03:28,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696476111] [2020-09-04 22:03:28,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:03:28,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-09-04 22:03:28,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300222423] [2020-09-04 22:03:28,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 22:03:28,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:03:28,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 22:03:28,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 22:03:28,055 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 97 states. [2020-09-04 22:03:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:03:43,714 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2020-09-04 22:03:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 22:03:43,716 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 338 [2020-09-04 22:03:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:03:43,717 INFO L225 Difference]: With dead ends: 211 [2020-09-04 22:03:43,718 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 22:03:43,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=379, Invalid=20213, Unknown=0, NotChecked=0, Total=20592 [2020-09-04 22:03:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 22:03:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-04 22:03:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-04 22:03:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-09-04 22:03:43,730 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 338 [2020-09-04 22:03:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:03:43,731 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-09-04 22:03:43,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 22:03:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-09-04 22:03:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 22:03:43,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:03:43,734 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:03:43,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 22:03:43,734 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:03:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:03:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1033418945, now seen corresponding path program 47 times [2020-09-04 22:03:43,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:03:43,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748443807] [2020-09-04 22:03:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:03:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:03:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:03:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:50,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:53,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:54,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2020-09-04 22:03:59,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748443807] [2020-09-04 22:03:59,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:03:59,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-09-04 22:03:59,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071054773] [2020-09-04 22:03:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 22:03:59,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:03:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 22:03:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 22:03:59,802 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 99 states. [2020-09-04 22:04:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:15,459 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-09-04 22:04:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 22:04:15,461 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 345 [2020-09-04 22:04:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:15,463 INFO L225 Difference]: With dead ends: 215 [2020-09-04 22:04:15,463 INFO L226 Difference]: Without dead ends: 210 [2020-09-04 22:04:15,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=387, Invalid=21075, Unknown=0, NotChecked=0, Total=21462 [2020-09-04 22:04:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-04 22:04:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-09-04 22:04:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-04 22:04:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-09-04 22:04:15,476 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 345 [2020-09-04 22:04:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:15,476 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-09-04 22:04:15,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 22:04:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-09-04 22:04:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-04 22:04:15,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:15,479 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:04:15,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 22:04:15,480 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:15,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1916270062, now seen corresponding path program 48 times [2020-09-04 22:04:15,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:15,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600795489] [2020-09-04 22:04:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:04:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 4608 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-09-04 22:04:32,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600795489] [2020-09-04 22:04:32,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:04:32,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-09-04 22:04:32,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454601638] [2020-09-04 22:04:32,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 22:04:32,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:04:32,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 22:04:32,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 22:04:32,304 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 101 states. [2020-09-04 22:04:49,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:49,345 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-09-04 22:04:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 22:04:49,346 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 352 [2020-09-04 22:04:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:49,348 INFO L225 Difference]: With dead ends: 219 [2020-09-04 22:04:49,349 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 22:04:49,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=395, Invalid=21955, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 22:04:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 22:04:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-04 22:04:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-04 22:04:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-04 22:04:49,360 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 352 [2020-09-04 22:04:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:49,361 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-04 22:04:49,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 22:04:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-04 22:04:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-04 22:04:49,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:49,363 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:04:49,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 22:04:49,364 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:49,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2001026221, now seen corresponding path program 49 times [2020-09-04 22:04:49,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:49,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577944804] [2020-09-04 22:04:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:04:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:02,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 4802 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-09-04 22:05:06,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577944804] [2020-09-04 22:05:06,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:05:06,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-09-04 22:05:06,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504136101] [2020-09-04 22:05:06,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 22:05:06,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 22:05:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 22:05:06,321 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 103 states. [2020-09-04 22:05:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:24,352 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2020-09-04 22:05:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 22:05:24,354 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 359 [2020-09-04 22:05:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:24,356 INFO L225 Difference]: With dead ends: 223 [2020-09-04 22:05:24,356 INFO L226 Difference]: Without dead ends: 218 [2020-09-04 22:05:24,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=403, Invalid=22853, Unknown=0, NotChecked=0, Total=23256 [2020-09-04 22:05:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-04 22:05:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-04 22:05:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-04 22:05:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-09-04 22:05:24,371 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 359 [2020-09-04 22:05:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:24,371 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-09-04 22:05:24,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 22:05:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-09-04 22:05:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-09-04 22:05:24,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:24,374 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:05:24,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 22:05:24,375 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:24,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2035606108, now seen corresponding path program 50 times [2020-09-04 22:05:24,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:24,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897212161] [2020-09-04 22:05:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:05:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:30,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:35,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:37,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 5000 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2020-09-04 22:05:42,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897212161] [2020-09-04 22:05:42,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:05:42,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-09-04 22:05:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827547122] [2020-09-04 22:05:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 22:05:42,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 22:05:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 22:05:42,189 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 105 states. [2020-09-04 22:06:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:00,786 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-09-04 22:06:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 22:06:00,788 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 366 [2020-09-04 22:06:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:00,791 INFO L225 Difference]: With dead ends: 227 [2020-09-04 22:06:00,791 INFO L226 Difference]: Without dead ends: 222 [2020-09-04 22:06:00,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=411, Invalid=23769, Unknown=0, NotChecked=0, Total=24180 [2020-09-04 22:06:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-04 22:06:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-04 22:06:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-04 22:06:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-09-04 22:06:00,802 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 366 [2020-09-04 22:06:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:00,803 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-09-04 22:06:00,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 22:06:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-09-04 22:06:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-04 22:06:00,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:00,805 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:00,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 22:06:00,806 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:00,806 INFO L82 PathProgramCache]: Analyzing trace with hash 318692325, now seen corresponding path program 51 times [2020-09-04 22:06:00,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:00,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261577845] [2020-09-04 22:06:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:06:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-09-04 22:06:19,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261577845] [2020-09-04 22:06:19,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:06:19,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-09-04 22:06:19,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231418151] [2020-09-04 22:06:19,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 22:06:19,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 22:06:19,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 22:06:19,694 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 107 states. [2020-09-04 22:06:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:39,003 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2020-09-04 22:06:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 22:06:39,005 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2020-09-04 22:06:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:39,007 INFO L225 Difference]: With dead ends: 231 [2020-09-04 22:06:39,007 INFO L226 Difference]: Without dead ends: 226 [2020-09-04 22:06:39,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=419, Invalid=24703, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 22:06:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-04 22:06:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-04 22:06:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-04 22:06:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-09-04 22:06:39,019 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 373 [2020-09-04 22:06:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:39,020 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-09-04 22:06:39,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 22:06:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-09-04 22:06:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 22:06:39,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:39,022 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:39,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 22:06:39,023 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash -415908042, now seen corresponding path program 52 times [2020-09-04 22:06:39,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:39,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808271310] [2020-09-04 22:06:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:39,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:06:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:39,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:41,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:42,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:42,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:43,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:43,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:55,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 5408 refuted. 0 times theorem prover too weak. 4082 trivial. 0 not checked. [2020-09-04 22:06:59,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808271310] [2020-09-04 22:06:59,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:06:59,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-09-04 22:06:59,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408885949] [2020-09-04 22:06:59,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 22:06:59,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:59,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 22:06:59,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 22:06:59,245 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 109 states. [2020-09-04 22:07:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:20,112 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2020-09-04 22:07:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 22:07:20,115 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 380 [2020-09-04 22:07:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:20,117 INFO L225 Difference]: With dead ends: 235 [2020-09-04 22:07:20,117 INFO L226 Difference]: Without dead ends: 230 [2020-09-04 22:07:20,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=427, Invalid=25655, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 22:07:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-04 22:07:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-04 22:07:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 22:07:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-09-04 22:07:20,128 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 380 [2020-09-04 22:07:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:20,128 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-09-04 22:07:20,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 22:07:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-09-04 22:07:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-09-04 22:07:20,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:20,131 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:20,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 22:07:20,131 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:20,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2128149897, now seen corresponding path program 53 times [2020-09-04 22:07:20,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:20,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349604080] [2020-09-04 22:07:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:07:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 5618 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2020-09-04 22:07:41,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349604080] [2020-09-04 22:07:41,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:41,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-09-04 22:07:41,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479529014] [2020-09-04 22:07:41,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 22:07:41,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 22:07:41,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 22:07:41,869 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 111 states. [2020-09-04 22:08:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:08:05,042 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2020-09-04 22:08:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 22:08:05,044 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 387 [2020-09-04 22:08:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:08:05,046 INFO L225 Difference]: With dead ends: 239 [2020-09-04 22:08:05,046 INFO L226 Difference]: Without dead ends: 234 [2020-09-04 22:08:05,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=435, Invalid=26625, Unknown=0, NotChecked=0, Total=27060 [2020-09-04 22:08:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-04 22:08:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-04 22:08:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-04 22:08:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-04 22:08:05,059 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 387 [2020-09-04 22:08:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:08:05,059 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-04 22:08:05,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 22:08:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-04 22:08:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-04 22:08:05,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:08:05,062 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:08:05,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 22:08:05,063 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:08:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:08:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1085673784, now seen corresponding path program 54 times [2020-09-04 22:08:05,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:08:05,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119483328] [2020-09-04 22:08:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:08:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:08:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:08:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:13,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:17,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:20,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2020-09-04 22:08:28,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119483328] [2020-09-04 22:08:28,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:08:28,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-09-04 22:08:28,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344007700] [2020-09-04 22:08:28,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-09-04 22:08:28,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:08:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-09-04 22:08:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2020-09-04 22:08:28,270 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 113 states. [2020-09-04 22:08:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:08:53,632 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2020-09-04 22:08:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-09-04 22:08:53,634 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 394 [2020-09-04 22:08:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:08:53,636 INFO L225 Difference]: With dead ends: 243 [2020-09-04 22:08:53,636 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 22:08:53,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=443, Invalid=27613, Unknown=0, NotChecked=0, Total=28056 [2020-09-04 22:08:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 22:08:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-09-04 22:08:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-04 22:08:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2020-09-04 22:08:53,647 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 394 [2020-09-04 22:08:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:08:53,647 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2020-09-04 22:08:53,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-09-04 22:08:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2020-09-04 22:08:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-09-04 22:08:53,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:08:53,650 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:08:53,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-04 22:08:53,651 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:08:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:08:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1577765111, now seen corresponding path program 55 times [2020-09-04 22:08:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:08:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499292829] [2020-09-04 22:08:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:08:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:08:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:53,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:08:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:54,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat