/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/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:51:52,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:51:52,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:51:52,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 21:51:52,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:51:52,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:51:52,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:51:52,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:51:52,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:51:52,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:51:52,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:51:52,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:51:52,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:51:52,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:51:52,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:51:52,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:51:52,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:51:52,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:51:52,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:51:52,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:51:52,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:51:52,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:51:52,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:51:52,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:51:52,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:51:52,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:51:52,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:51:52,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:51:52,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:51:52,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:51:52,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:51:52,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:51:52,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:51:52,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:51:52,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:51:52,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:51:52,619 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:51:52,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:51:52,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:51:52,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:51:52,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:51:52,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:51:52,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:51:52,621 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 [2020-08-22 21:51:52,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:51:52,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:51:52,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:51:52,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:51:52,971 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:51:52,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-08-22 21:51:53,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5368231de/1c72171f45e14231855c38f5b441839d/FLAGa3ed8c0dd [2020-08-22 21:51:53,492 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:51:53,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-08-22 21:51:53,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5368231de/1c72171f45e14231855c38f5b441839d/FLAGa3ed8c0dd [2020-08-22 21:51:53,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5368231de/1c72171f45e14231855c38f5b441839d [2020-08-22 21:51:53,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:51:53,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:51:53,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:51:53,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:51:53,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:51:53,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:51:53" (1/1) ... [2020-08-22 21:51:53,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59909fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:53, skipping insertion in model container [2020-08-22 21:51:53,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:51:53" (1/1) ... [2020-08-22 21:51:53,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:51:53,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:51:54,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:51:54,084 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:51:54,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:51:54,115 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:51:54,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54 WrapperNode [2020-08-22 21:51:54,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:51:54,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:51:54,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:51:54,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:51:54,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... [2020-08-22 21:51:54,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:51:54,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:51:54,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:51:54,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:51:54,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:51:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:51:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:51:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-08-22 21:51:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-08-22 21:51:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:51:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:51:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:51:54,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:51:54,506 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 21:51:54,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:51:54 BoogieIcfgContainer [2020-08-22 21:51:54,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:51:54,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:51:54,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:51:54,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:51:54,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:51:53" (1/3) ... [2020-08-22 21:51:54,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef9d9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:51:54, skipping insertion in model container [2020-08-22 21:51:54,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:51:54" (2/3) ... [2020-08-22 21:51:54,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef9d9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:51:54, skipping insertion in model container [2020-08-22 21:51:54,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:51:54" (3/3) ... [2020-08-22 21:51:54,524 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-08-22 21:51:54,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:51:54,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:51:54,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:51:54,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:51:54,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:51:54,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:51:54,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:51:54,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:51:54,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:51:54,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:51:54,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:51:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-22 21:51:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 21:51:54,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:54,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:54,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:54,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-08-22 21:51:54,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:54,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989668170] [2020-08-22 21:51:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,063 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 17 [2020-08-22 21:51:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:51:55,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989668170] [2020-08-22 21:51:55,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:51:55,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 21:51:55,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869304238] [2020-08-22 21:51:55,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 21:51:55,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 21:51:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 21:51:55,168 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 9 states. [2020-08-22 21:51:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:55,395 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-08-22 21:51:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 21:51:55,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-08-22 21:51:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:55,409 INFO L225 Difference]: With dead ends: 62 [2020-08-22 21:51:55,409 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 21:51:55,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-08-22 21:51:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 21:51:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-22 21:51:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 21:51:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-08-22 21:51:55,467 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-08-22 21:51:55,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:55,468 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-08-22 21:51:55,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 21:51:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-08-22 21:51:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 21:51:55,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:55,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:55,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:51:55,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:55,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-08-22 21:51:55,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:55,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478670955] [2020-08-22 21:51:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,745 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 17 [2020-08-22 21:51:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:51:55,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478670955] [2020-08-22 21:51:55,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:51:55,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 21:51:55,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961901465] [2020-08-22 21:51:55,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 21:51:55,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:55,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 21:51:55,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 21:51:55,810 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-08-22 21:51:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:55,982 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-08-22 21:51:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 21:51:55,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-08-22 21:51:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:55,984 INFO L225 Difference]: With dead ends: 49 [2020-08-22 21:51:55,985 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 21:51:55,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-08-22 21:51:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 21:51:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-22 21:51:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 21:51:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-08-22 21:51:55,997 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-08-22 21:51:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:55,998 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-08-22 21:51:55,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 21:51:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-08-22 21:51:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 21:51:56,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:56,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:56,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:51:56,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:56,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:56,001 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-08-22 21:51:56,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:56,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559660722] [2020-08-22 21:51:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:51:56,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559660722] [2020-08-22 21:51:56,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:51:56,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 21:51:56,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573751673] [2020-08-22 21:51:56,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 21:51:56,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:56,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 21:51:56,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 21:51:56,108 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-08-22 21:51:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:56,170 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-22 21:51:56,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 21:51:56,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-22 21:51:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:56,174 INFO L225 Difference]: With dead ends: 61 [2020-08-22 21:51:56,175 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 21:51:56,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 21:51:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 21:51:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-08-22 21:51:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 21:51:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-08-22 21:51:56,194 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-08-22 21:51:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:56,195 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-08-22 21:51:56,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 21:51:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-08-22 21:51:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 21:51:56,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:56,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:56,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 21:51:56,200 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-08-22 21:51:56,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:56,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581800225] [2020-08-22 21:51:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,457 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-08-22 21:51:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:51:56,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581800225] [2020-08-22 21:51:56,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:51:56,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 21:51:56,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964075310] [2020-08-22 21:51:56,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 21:51:56,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 21:51:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 21:51:56,602 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-08-22 21:51:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:57,016 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-08-22 21:51:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 21:51:57,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-22 21:51:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:57,018 INFO L225 Difference]: With dead ends: 53 [2020-08-22 21:51:57,018 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 21:51:57,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-08-22 21:51:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 21:51:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-08-22 21:51:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 21:51:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-08-22 21:51:57,038 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-08-22 21:51:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:57,039 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-08-22 21:51:57,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 21:51:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-08-22 21:51:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 21:51:57,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:57,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:57,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 21:51:57,045 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:57,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-08-22 21:51:57,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:57,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300808824] [2020-08-22 21:51:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 21:51:57,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300808824] [2020-08-22 21:51:57,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:51:57,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 21:51:57,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924886922] [2020-08-22 21:51:57,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 21:51:57,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:57,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 21:51:57,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 21:51:57,159 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-08-22 21:51:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:57,211 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-08-22 21:51:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 21:51:57,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-08-22 21:51:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:57,216 INFO L225 Difference]: With dead ends: 63 [2020-08-22 21:51:57,216 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 21:51:57,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 21:51:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 21:51:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 21:51:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 21:51:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-08-22 21:51:57,233 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2020-08-22 21:51:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:57,234 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-08-22 21:51:57,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 21:51:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-08-22 21:51:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 21:51:57,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:57,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:57,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 21:51:57,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-08-22 21:51:57,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:57,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526296653] [2020-08-22 21:51:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 21:51:57,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526296653] [2020-08-22 21:51:57,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:51:57,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 21:51:57,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120240292] [2020-08-22 21:51:57,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 21:51:57,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 21:51:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 21:51:57,603 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 14 states. [2020-08-22 21:51:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:57,932 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-08-22 21:51:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 21:51:57,933 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-08-22 21:51:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:57,934 INFO L225 Difference]: With dead ends: 62 [2020-08-22 21:51:57,934 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 21:51:57,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-08-22 21:51:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 21:51:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-08-22 21:51:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 21:51:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-08-22 21:51:57,953 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 39 [2020-08-22 21:51:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:57,958 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-08-22 21:51:57,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 21:51:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-08-22 21:51:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 21:51:57,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:57,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:57,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 21:51:57,960 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:57,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-08-22 21:51:57,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:57,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708925728] [2020-08-22 21:51:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 21:51:58,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708925728] [2020-08-22 21:51:58,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:51:58,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 21:51:58,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768873344] [2020-08-22 21:51:58,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 21:51:58,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:58,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 21:51:58,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-08-22 21:51:58,398 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 16 states. [2020-08-22 21:51:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:58,914 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-08-22 21:51:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 21:51:58,914 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-08-22 21:51:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:58,916 INFO L225 Difference]: With dead ends: 72 [2020-08-22 21:51:58,916 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 21:51:58,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2020-08-22 21:51:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 21:51:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-08-22 21:51:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 21:51:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-08-22 21:51:58,928 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2020-08-22 21:51:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:51:58,928 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-08-22 21:51:58,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 21:51:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-08-22 21:51:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 21:51:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:51:58,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:51:58,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 21:51:58,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:51:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:51:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-08-22 21:51:58,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:51:58,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98098723] [2020-08-22 21:51:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:51:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,136 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2020-08-22 21:51:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:51:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:51:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:51:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:51:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 21:51:59,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98098723] [2020-08-22 21:51:59,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:51:59,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 21:51:59,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712939715] [2020-08-22 21:51:59,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 21:51:59,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:51:59,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 21:51:59,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-08-22 21:51:59,431 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 18 states. [2020-08-22 21:51:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:51:59,987 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-08-22 21:51:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 21:51:59,988 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-08-22 21:51:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:51:59,990 INFO L225 Difference]: With dead ends: 82 [2020-08-22 21:51:59,990 INFO L226 Difference]: Without dead ends: 75 [2020-08-22 21:51:59,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 21:51:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-22 21:52:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2020-08-22 21:52:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 21:52:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-08-22 21:52:00,013 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 57 [2020-08-22 21:52:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:00,014 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-08-22 21:52:00,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 21:52:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-08-22 21:52:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 21:52:00,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:00,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:00,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 21:52:00,017 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-08-22 21:52:00,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:00,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936521838] [2020-08-22 21:52:00,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 21:52:00,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936521838] [2020-08-22 21:52:00,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:00,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 21:52:00,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198574901] [2020-08-22 21:52:00,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 21:52:00,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:00,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 21:52:00,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-08-22 21:52:00,588 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 19 states. [2020-08-22 21:52:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:01,327 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-08-22 21:52:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 21:52:01,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-08-22 21:52:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:01,329 INFO L225 Difference]: With dead ends: 92 [2020-08-22 21:52:01,330 INFO L226 Difference]: Without dead ends: 85 [2020-08-22 21:52:01,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 21:52:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-08-22 21:52:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-08-22 21:52:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 21:52:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-08-22 21:52:01,344 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 66 [2020-08-22 21:52:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:01,345 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-08-22 21:52:01,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 21:52:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-08-22 21:52:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 21:52:01,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:01,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:01,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 21:52:01,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:01,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-08-22 21:52:01,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:01,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703859885] [2020-08-22 21:52:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,586 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2020-08-22 21:52:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 21:52:02,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703859885] [2020-08-22 21:52:02,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:02,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 21:52:02,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008396895] [2020-08-22 21:52:02,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 21:52:02,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:02,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 21:52:02,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-08-22 21:52:02,113 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 22 states. [2020-08-22 21:52:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:03,032 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-08-22 21:52:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 21:52:03,033 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-08-22 21:52:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:03,037 INFO L225 Difference]: With dead ends: 102 [2020-08-22 21:52:03,037 INFO L226 Difference]: Without dead ends: 95 [2020-08-22 21:52:03,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1738, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 21:52:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-22 21:52:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68. [2020-08-22 21:52:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 21:52:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-08-22 21:52:03,069 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 75 [2020-08-22 21:52:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:03,069 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-08-22 21:52:03,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 21:52:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-08-22 21:52:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 21:52:03,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:03,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:03,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 21:52:03,075 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:03,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-08-22 21:52:03,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:03,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602646188] [2020-08-22 21:52:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 21:52:03,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602646188] [2020-08-22 21:52:03,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:03,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 21:52:03,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031431112] [2020-08-22 21:52:03,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 21:52:03,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:03,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 21:52:03,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-08-22 21:52:03,875 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 23 states. [2020-08-22 21:52:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:04,956 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-08-22 21:52:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 21:52:04,956 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-08-22 21:52:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:04,958 INFO L225 Difference]: With dead ends: 112 [2020-08-22 21:52:04,958 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 21:52:04,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 21:52:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 21:52:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2020-08-22 21:52:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-22 21:52:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-08-22 21:52:04,975 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 84 [2020-08-22 21:52:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:04,975 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-08-22 21:52:04,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 21:52:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-08-22 21:52:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 21:52:04,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:04,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:04,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 21:52:04,978 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-08-22 21:52:04,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:04,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279131845] [2020-08-22 21:52:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 21:52:05,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279131845] [2020-08-22 21:52:05,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:05,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-22 21:52:05,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754654852] [2020-08-22 21:52:05,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-22 21:52:05,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:05,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-22 21:52:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-08-22 21:52:05,786 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 26 states. [2020-08-22 21:52:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:07,005 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-08-22 21:52:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 21:52:07,008 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 93 [2020-08-22 21:52:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:07,010 INFO L225 Difference]: With dead ends: 122 [2020-08-22 21:52:07,010 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 21:52:07,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 21:52:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 21:52:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2020-08-22 21:52:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 21:52:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-08-22 21:52:07,030 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 93 [2020-08-22 21:52:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:07,031 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-08-22 21:52:07,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-22 21:52:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-08-22 21:52:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-22 21:52:07,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:07,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:07,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 21:52:07,033 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1934265180, now seen corresponding path program 4 times [2020-08-22 21:52:07,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:07,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170022853] [2020-08-22 21:52:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-08-22 21:52:07,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170022853] [2020-08-22 21:52:07,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:07,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 21:52:07,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595379627] [2020-08-22 21:52:07,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 21:52:07,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:07,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 21:52:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-08-22 21:52:07,889 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 28 states. [2020-08-22 21:52:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:09,350 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-08-22 21:52:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 21:52:09,350 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-08-22 21:52:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:09,352 INFO L225 Difference]: With dead ends: 132 [2020-08-22 21:52:09,352 INFO L226 Difference]: Without dead ends: 125 [2020-08-22 21:52:09,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=211, Invalid=3211, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 21:52:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-08-22 21:52:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-08-22 21:52:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 21:52:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-08-22 21:52:09,370 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 102 [2020-08-22 21:52:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:09,371 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-08-22 21:52:09,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 21:52:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-08-22 21:52:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 21:52:09,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:09,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:09,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 21:52:09,373 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash -390895683, now seen corresponding path program 5 times [2020-08-22 21:52:09,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:09,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426263571] [2020-08-22 21:52:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-08-22 21:52:10,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426263571] [2020-08-22 21:52:10,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:10,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-22 21:52:10,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142218259] [2020-08-22 21:52:10,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-22 21:52:10,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:10,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-22 21:52:10,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-08-22 21:52:10,390 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 30 states. [2020-08-22 21:52:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:12,149 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-08-22 21:52:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 21:52:12,150 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 111 [2020-08-22 21:52:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:12,151 INFO L225 Difference]: With dead ends: 142 [2020-08-22 21:52:12,151 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 21:52:12,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=230, Invalid=3802, Unknown=0, NotChecked=0, Total=4032 [2020-08-22 21:52:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 21:52:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 88. [2020-08-22 21:52:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 21:52:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-08-22 21:52:12,172 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 111 [2020-08-22 21:52:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:12,173 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-08-22 21:52:12,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-22 21:52:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-08-22 21:52:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 21:52:12,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:12,174 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:12,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 21:52:12,174 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2094114280, now seen corresponding path program 5 times [2020-08-22 21:52:12,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:12,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369982173] [2020-08-22 21:52:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-22 21:52:13,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369982173] [2020-08-22 21:52:13,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:13,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 21:52:13,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935133201] [2020-08-22 21:52:13,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 21:52:13,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 21:52:13,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-08-22 21:52:13,301 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 31 states. [2020-08-22 21:52:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:15,354 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-08-22 21:52:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-22 21:52:15,354 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 120 [2020-08-22 21:52:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:15,356 INFO L225 Difference]: With dead ends: 152 [2020-08-22 21:52:15,356 INFO L226 Difference]: Without dead ends: 145 [2020-08-22 21:52:15,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=243, Invalid=4313, Unknown=0, NotChecked=0, Total=4556 [2020-08-22 21:52:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-22 21:52:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-08-22 21:52:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 21:52:15,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-08-22 21:52:15,389 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 120 [2020-08-22 21:52:15,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:15,390 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-08-22 21:52:15,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 21:52:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-08-22 21:52:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 21:52:15,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:15,392 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:15,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 21:52:15,392 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:15,392 INFO L82 PathProgramCache]: Analyzing trace with hash -501508427, now seen corresponding path program 6 times [2020-08-22 21:52:15,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:15,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585445047] [2020-08-22 21:52:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-08-22 21:52:16,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585445047] [2020-08-22 21:52:16,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:16,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-22 21:52:16,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736484882] [2020-08-22 21:52:16,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-22 21:52:16,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:16,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-22 21:52:16,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1054, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 21:52:16,938 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 34 states. [2020-08-22 21:52:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:19,151 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-08-22 21:52:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 21:52:19,151 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 129 [2020-08-22 21:52:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:19,153 INFO L225 Difference]: With dead ends: 162 [2020-08-22 21:52:19,153 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 21:52:19,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=268, Invalid=5134, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 21:52:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 21:52:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-08-22 21:52:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 21:52:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-08-22 21:52:19,180 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 129 [2020-08-22 21:52:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:19,181 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-08-22 21:52:19,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-22 21:52:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-08-22 21:52:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-22 21:52:19,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:19,182 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:19,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 21:52:19,183 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -436935508, now seen corresponding path program 6 times [2020-08-22 21:52:19,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:19,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972222545] [2020-08-22 21:52:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:19,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-22 21:52:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972222545] [2020-08-22 21:52:20,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:20,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-22 21:52:20,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937347276] [2020-08-22 21:52:20,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-22 21:52:20,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-22 21:52:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1188, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 21:52:20,552 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 36 states. [2020-08-22 21:52:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:23,136 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-08-22 21:52:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 21:52:23,136 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2020-08-22 21:52:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:23,138 INFO L225 Difference]: With dead ends: 172 [2020-08-22 21:52:23,138 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 21:52:23,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=287, Invalid=5875, Unknown=0, NotChecked=0, Total=6162 [2020-08-22 21:52:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 21:52:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 103. [2020-08-22 21:52:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 21:52:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-08-22 21:52:23,168 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 138 [2020-08-22 21:52:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:23,168 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-08-22 21:52:23,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-22 21:52:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-08-22 21:52:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 21:52:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:23,169 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:23,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 21:52:23,169 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1952223955, now seen corresponding path program 7 times [2020-08-22 21:52:23,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:23,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220442372] [2020-08-22 21:52:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-08-22 21:52:24,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220442372] [2020-08-22 21:52:24,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:24,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-22 21:52:24,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063989061] [2020-08-22 21:52:24,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-22 21:52:24,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:24,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-22 21:52:24,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1330, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 21:52:24,745 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 38 states. [2020-08-22 21:52:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:27,633 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-08-22 21:52:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 21:52:27,633 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 147 [2020-08-22 21:52:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:27,635 INFO L225 Difference]: With dead ends: 182 [2020-08-22 21:52:27,635 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 21:52:27,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=6666, Unknown=0, NotChecked=0, Total=6972 [2020-08-22 21:52:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 21:52:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 108. [2020-08-22 21:52:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 21:52:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-08-22 21:52:27,668 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 147 [2020-08-22 21:52:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:27,669 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-08-22 21:52:27,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-22 21:52:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-08-22 21:52:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 21:52:27,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:27,670 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:27,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 21:52:27,671 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -265506576, now seen corresponding path program 7 times [2020-08-22 21:52:27,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:27,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945555610] [2020-08-22 21:52:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:27,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-08-22 21:52:29,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945555610] [2020-08-22 21:52:29,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:29,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 21:52:29,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277534895] [2020-08-22 21:52:29,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 21:52:29,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:29,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 21:52:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 21:52:29,321 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 39 states. [2020-08-22 21:52:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:32,520 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-08-22 21:52:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-22 21:52:32,521 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 156 [2020-08-22 21:52:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:32,523 INFO L225 Difference]: With dead ends: 192 [2020-08-22 21:52:32,523 INFO L226 Difference]: Without dead ends: 185 [2020-08-22 21:52:32,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=319, Invalid=7337, Unknown=0, NotChecked=0, Total=7656 [2020-08-22 21:52:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-22 21:52:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2020-08-22 21:52:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 21:52:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-08-22 21:52:32,561 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 156 [2020-08-22 21:52:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:32,562 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-08-22 21:52:32,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 21:52:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-08-22 21:52:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-08-22 21:52:32,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:32,563 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:32,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 21:52:32,563 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:32,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:32,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1317743397, now seen corresponding path program 8 times [2020-08-22 21:52:32,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:32,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173437209] [2020-08-22 21:52:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:32,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-08-22 21:52:34,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173437209] [2020-08-22 21:52:34,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-08-22 21:52:34,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842786628] [2020-08-22 21:52:34,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-08-22 21:52:34,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:34,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-08-22 21:52:34,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1638, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 21:52:34,447 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 42 states. [2020-08-22 21:52:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:38,013 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-08-22 21:52:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-22 21:52:38,014 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 165 [2020-08-22 21:52:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:38,016 INFO L225 Difference]: With dead ends: 202 [2020-08-22 21:52:38,016 INFO L226 Difference]: Without dead ends: 195 [2020-08-22 21:52:38,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=344, Invalid=8398, Unknown=0, NotChecked=0, Total=8742 [2020-08-22 21:52:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-22 21:52:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 118. [2020-08-22 21:52:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 21:52:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-08-22 21:52:38,056 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 165 [2020-08-22 21:52:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:38,057 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-08-22 21:52:38,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-08-22 21:52:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-08-22 21:52:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 21:52:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:38,058 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:38,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 21:52:38,059 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2102299316, now seen corresponding path program 8 times [2020-08-22 21:52:38,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:38,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227541294] [2020-08-22 21:52:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-08-22 21:52:40,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227541294] [2020-08-22 21:52:40,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:40,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-08-22 21:52:40,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137349487] [2020-08-22 21:52:40,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-08-22 21:52:40,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-08-22 21:52:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1804, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 21:52:40,102 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 44 states. [2020-08-22 21:52:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:43,977 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-08-22 21:52:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-08-22 21:52:43,978 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 174 [2020-08-22 21:52:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:43,980 INFO L225 Difference]: With dead ends: 212 [2020-08-22 21:52:43,980 INFO L226 Difference]: Without dead ends: 205 [2020-08-22 21:52:43,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=363, Invalid=9339, Unknown=0, NotChecked=0, Total=9702 [2020-08-22 21:52:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-22 21:52:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 123. [2020-08-22 21:52:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 21:52:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-08-22 21:52:44,017 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 174 [2020-08-22 21:52:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:44,018 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-08-22 21:52:44,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-08-22 21:52:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-08-22 21:52:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 21:52:44,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:44,019 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:44,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 21:52:44,020 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1592061795, now seen corresponding path program 9 times [2020-08-22 21:52:44,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:44,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78544861] [2020-08-22 21:52:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-22 21:52:46,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78544861] [2020-08-22 21:52:46,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:46,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-08-22 21:52:46,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58529824] [2020-08-22 21:52:46,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-08-22 21:52:46,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-08-22 21:52:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1978, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 21:52:46,247 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 46 states. [2020-08-22 21:52:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:50,504 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-08-22 21:52:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-08-22 21:52:50,506 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 183 [2020-08-22 21:52:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:50,508 INFO L225 Difference]: With dead ends: 222 [2020-08-22 21:52:50,508 INFO L226 Difference]: Without dead ends: 215 [2020-08-22 21:52:50,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=382, Invalid=10330, Unknown=0, NotChecked=0, Total=10712 [2020-08-22 21:52:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-08-22 21:52:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 128. [2020-08-22 21:52:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 21:52:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-08-22 21:52:50,555 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 183 [2020-08-22 21:52:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:50,556 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-08-22 21:52:50,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-08-22 21:52:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-08-22 21:52:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 21:52:50,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:50,557 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:50,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 21:52:50,557 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:50,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:50,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1258819080, now seen corresponding path program 9 times [2020-08-22 21:52:50,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:50,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516692906] [2020-08-22 21:52:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-08-22 21:52:53,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516692906] [2020-08-22 21:52:53,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:52:53,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-08-22 21:52:53,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876736145] [2020-08-22 21:52:53,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 21:52:53,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:52:53,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 21:52:53,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 21:52:53,387 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 47 states. [2020-08-22 21:52:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:52:58,247 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-08-22 21:52:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-08-22 21:52:58,248 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 192 [2020-08-22 21:52:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:52:58,250 INFO L225 Difference]: With dead ends: 232 [2020-08-22 21:52:58,250 INFO L226 Difference]: Without dead ends: 225 [2020-08-22 21:52:58,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=395, Invalid=11161, Unknown=0, NotChecked=0, Total=11556 [2020-08-22 21:52:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-22 21:52:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 133. [2020-08-22 21:52:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 21:52:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-08-22 21:52:58,307 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 192 [2020-08-22 21:52:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:52:58,307 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-08-22 21:52:58,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 21:52:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-08-22 21:52:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-22 21:52:58,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:52:58,309 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:52:58,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 21:52:58,309 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:52:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:52:58,310 INFO L82 PathProgramCache]: Analyzing trace with hash -157065835, now seen corresponding path program 10 times [2020-08-22 21:52:58,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:52:58,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319870436] [2020-08-22 21:52:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:52:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:52:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:52:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:52:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:52:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-08-22 21:53:01,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319870436] [2020-08-22 21:53:01,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:01,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-08-22 21:53:01,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627790043] [2020-08-22 21:53:01,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-08-22 21:53:01,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:01,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-08-22 21:53:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2350, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 21:53:01,787 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 50 states. [2020-08-22 21:53:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:53:07,095 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-08-22 21:53:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-08-22 21:53:07,095 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 201 [2020-08-22 21:53:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:53:07,097 INFO L225 Difference]: With dead ends: 242 [2020-08-22 21:53:07,097 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 21:53:07,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=420, Invalid=12462, Unknown=0, NotChecked=0, Total=12882 [2020-08-22 21:53:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 21:53:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 138. [2020-08-22 21:53:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 21:53:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-08-22 21:53:07,168 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 201 [2020-08-22 21:53:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:53:07,168 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-08-22 21:53:07,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-08-22 21:53:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-08-22 21:53:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-08-22 21:53:07,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:53:07,169 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:53:07,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 21:53:07,170 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:53:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:53:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash 277767868, now seen corresponding path program 10 times [2020-08-22 21:53:07,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:53:07,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46430795] [2020-08-22 21:53:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:53:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:53:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:53:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:09,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-08-22 21:53:10,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46430795] [2020-08-22 21:53:10,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:10,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-08-22 21:53:10,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595318371] [2020-08-22 21:53:10,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 21:53:10,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 21:53:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 21:53:10,054 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 51 states. [2020-08-22 21:53:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:53:15,970 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-08-22 21:53:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-08-22 21:53:15,971 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 210 [2020-08-22 21:53:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:53:15,973 INFO L225 Difference]: With dead ends: 252 [2020-08-22 21:53:15,973 INFO L226 Difference]: Without dead ends: 245 [2020-08-22 21:53:15,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=433, Invalid=13373, Unknown=0, NotChecked=0, Total=13806 [2020-08-22 21:53:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-08-22 21:53:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 143. [2020-08-22 21:53:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 21:53:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-08-22 21:53:16,039 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 210 [2020-08-22 21:53:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:53:16,040 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-08-22 21:53:16,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 21:53:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-08-22 21:53:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-22 21:53:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:53:16,041 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:53:16,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 21:53:16,041 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:53:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:53:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash 796676621, now seen corresponding path program 11 times [2020-08-22 21:53:16,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:53:16,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159368578] [2020-08-22 21:53:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:53:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:53:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:53:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-08-22 21:53:19,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159368578] [2020-08-22 21:53:19,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:19,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-08-22 21:53:19,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130948454] [2020-08-22 21:53:19,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-08-22 21:53:19,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:19,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-08-22 21:53:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2754, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 21:53:19,227 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 54 states. [2020-08-22 21:53:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:53:25,424 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-08-22 21:53:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-08-22 21:53:25,425 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 219 [2020-08-22 21:53:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:53:25,427 INFO L225 Difference]: With dead ends: 262 [2020-08-22 21:53:25,427 INFO L226 Difference]: Without dead ends: 255 [2020-08-22 21:53:25,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2694 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=458, Invalid=14794, Unknown=0, NotChecked=0, Total=15252 [2020-08-22 21:53:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-22 21:53:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 148. [2020-08-22 21:53:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 21:53:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-08-22 21:53:25,526 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 219 [2020-08-22 21:53:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:53:25,527 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-08-22 21:53:25,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-08-22 21:53:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-08-22 21:53:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-08-22 21:53:25,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:53:25,529 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:53:25,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 21:53:25,529 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:53:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:53:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -415274752, now seen corresponding path program 11 times [2020-08-22 21:53:25,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:53:25,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227461708] [2020-08-22 21:53:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:53:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:53:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:53:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:28,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-08-22 21:53:29,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227461708] [2020-08-22 21:53:29,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:29,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 21:53:29,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239680311] [2020-08-22 21:53:29,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 21:53:29,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 21:53:29,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 21:53:29,057 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 55 states. [2020-08-22 21:53:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:53:36,030 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-08-22 21:53:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-08-22 21:53:36,030 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 228 [2020-08-22 21:53:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:53:36,033 INFO L225 Difference]: With dead ends: 272 [2020-08-22 21:53:36,033 INFO L226 Difference]: Without dead ends: 265 [2020-08-22 21:53:36,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=471, Invalid=15785, Unknown=0, NotChecked=0, Total=16256 [2020-08-22 21:53:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-22 21:53:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 153. [2020-08-22 21:53:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 21:53:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2020-08-22 21:53:36,108 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 228 [2020-08-22 21:53:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:53:36,108 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2020-08-22 21:53:36,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 21:53:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2020-08-22 21:53:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 21:53:36,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:53:36,110 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:53:36,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 21:53:36,110 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:53:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:53:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1996083707, now seen corresponding path program 12 times [2020-08-22 21:53:36,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:53:36,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045848653] [2020-08-22 21:53:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:53:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:53:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:53:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-08-22 21:53:39,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045848653] [2020-08-22 21:53:39,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:39,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-08-22 21:53:39,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897687240] [2020-08-22 21:53:39,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-08-22 21:53:39,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:39,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-08-22 21:53:39,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3190, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 21:53:39,911 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 58 states. [2020-08-22 21:53:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:53:47,470 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2020-08-22 21:53:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-08-22 21:53:47,470 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 237 [2020-08-22 21:53:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:53:47,472 INFO L225 Difference]: With dead ends: 282 [2020-08-22 21:53:47,472 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 21:53:47,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=496, Invalid=17326, Unknown=0, NotChecked=0, Total=17822 [2020-08-22 21:53:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 21:53:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 158. [2020-08-22 21:53:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 21:53:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-08-22 21:53:47,558 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 237 [2020-08-22 21:53:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:53:47,558 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-08-22 21:53:47,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-08-22 21:53:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-08-22 21:53:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-08-22 21:53:47,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:53:47,560 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:53:47,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 21:53:47,560 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:53:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:53:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2046851268, now seen corresponding path program 12 times [2020-08-22 21:53:47,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:53:47,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115472819] [2020-08-22 21:53:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:53:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:53:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:47,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:53:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:53:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:53:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 744 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-08-22 21:53:51,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115472819] [2020-08-22 21:53:51,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:53:51,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-08-22 21:53:51,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674194839] [2020-08-22 21:53:51,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-08-22 21:53:51,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:53:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-08-22 21:53:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 21:53:51,726 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 59 states. [2020-08-22 21:54:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:00,364 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2020-08-22 21:54:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-08-22 21:54:00,364 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 246 [2020-08-22 21:54:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:00,367 INFO L225 Difference]: With dead ends: 292 [2020-08-22 21:54:00,367 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 21:54:00,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3132 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=509, Invalid=18397, Unknown=0, NotChecked=0, Total=18906 [2020-08-22 21:54:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 21:54:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 163. [2020-08-22 21:54:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 21:54:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-08-22 21:54:00,465 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 246 [2020-08-22 21:54:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:00,465 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-08-22 21:54:00,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-08-22 21:54:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-08-22 21:54:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-08-22 21:54:00,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:00,467 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:54:00,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 21:54:00,467 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash 229192061, now seen corresponding path program 13 times [2020-08-22 21:54:00,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:00,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339707069] [2020-08-22 21:54:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:00,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:04,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 806 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-08-22 21:54:05,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339707069] [2020-08-22 21:54:05,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:05,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-08-22 21:54:05,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139118989] [2020-08-22 21:54:05,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-08-22 21:54:05,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-08-22 21:54:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3658, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 21:54:05,319 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 62 states. [2020-08-22 21:54:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:14,667 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2020-08-22 21:54:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-08-22 21:54:14,668 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 255 [2020-08-22 21:54:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:14,671 INFO L225 Difference]: With dead ends: 302 [2020-08-22 21:54:14,671 INFO L226 Difference]: Without dead ends: 295 [2020-08-22 21:54:14,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3648 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=534, Invalid=20058, Unknown=0, NotChecked=0, Total=20592 [2020-08-22 21:54:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-08-22 21:54:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 168. [2020-08-22 21:54:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 21:54:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-08-22 21:54:14,857 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 255 [2020-08-22 21:54:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:14,858 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-08-22 21:54:14,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-08-22 21:54:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-08-22 21:54:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-08-22 21:54:14,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:14,861 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:54:14,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 21:54:14,862 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:14,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2140083720, now seen corresponding path program 13 times [2020-08-22 21:54:14,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:14,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870659991] [2020-08-22 21:54:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,135 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-08-22 21:54:15,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:16,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:19,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-08-22 21:54:20,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870659991] [2020-08-22 21:54:20,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:20,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-08-22 21:54:20,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108218026] [2020-08-22 21:54:20,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-08-22 21:54:20,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-08-22 21:54:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=3905, Unknown=0, NotChecked=0, Total=4032 [2020-08-22 21:54:20,417 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 64 states. [2020-08-22 21:54:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:30,469 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2020-08-22 21:54:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-08-22 21:54:30,470 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 264 [2020-08-22 21:54:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:30,472 INFO L225 Difference]: With dead ends: 312 [2020-08-22 21:54:30,472 INFO L226 Difference]: Without dead ends: 305 [2020-08-22 21:54:30,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=558, Invalid=21792, Unknown=0, NotChecked=0, Total=22350 [2020-08-22 21:54:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-08-22 21:54:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 173. [2020-08-22 21:54:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-08-22 21:54:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-08-22 21:54:30,649 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 264 [2020-08-22 21:54:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:30,650 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-08-22 21:54:30,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-08-22 21:54:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-08-22 21:54:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 21:54:30,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:30,652 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:54:30,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 21:54:30,653 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2066375563, now seen corresponding path program 14 times [2020-08-22 21:54:30,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:30,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264862111] [2020-08-22 21:54:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:30,967 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-08-22 21:54:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:34,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 938 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-08-22 21:54:36,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264862111] [2020-08-22 21:54:36,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:36,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-08-22 21:54:36,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911524336] [2020-08-22 21:54:36,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-08-22 21:54:36,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:36,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-08-22 21:54:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4158, Unknown=0, NotChecked=0, Total=4290 [2020-08-22 21:54:36,324 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 66 states. [2020-08-22 21:54:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:46,861 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2020-08-22 21:54:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-08-22 21:54:46,862 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 273 [2020-08-22 21:54:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:46,864 INFO L225 Difference]: With dead ends: 322 [2020-08-22 21:54:46,864 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 21:54:46,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=572, Invalid=22990, Unknown=0, NotChecked=0, Total=23562 [2020-08-22 21:54:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 21:54:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 178. [2020-08-22 21:54:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-22 21:54:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-08-22 21:54:47,000 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 273 [2020-08-22 21:54:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:47,001 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-08-22 21:54:47,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-08-22 21:54:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-08-22 21:54:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-08-22 21:54:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:47,003 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:54:47,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 21:54:47,003 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 812695756, now seen corresponding path program 14 times [2020-08-22 21:54:47,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:47,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973180329] [2020-08-22 21:54:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,222 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2020-08-22 21:54:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:50,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:51,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:54:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-08-22 21:54:53,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973180329] [2020-08-22 21:54:53,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:53,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-08-22 21:54:53,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927876432] [2020-08-22 21:54:53,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-08-22 21:54:53,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:53,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-08-22 21:54:53,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4420, Unknown=0, NotChecked=0, Total=4556 [2020-08-22 21:54:53,189 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 68 states. [2020-08-22 21:55:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:55:04,502 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2020-08-22 21:55:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-08-22 21:55:04,502 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 282 [2020-08-22 21:55:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:55:04,505 INFO L225 Difference]: With dead ends: 332 [2020-08-22 21:55:04,505 INFO L226 Difference]: Without dead ends: 325 [2020-08-22 21:55:04,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4458 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=591, Invalid=24531, Unknown=0, NotChecked=0, Total=25122 [2020-08-22 21:55:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-22 21:55:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 183. [2020-08-22 21:55:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-22 21:55:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2020-08-22 21:55:04,712 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 282 [2020-08-22 21:55:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:55:04,713 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2020-08-22 21:55:04,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-08-22 21:55:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2020-08-22 21:55:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-08-22 21:55:04,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:55:04,715 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:55:04,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 21:55:04,715 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:55:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:55:04,716 INFO L82 PathProgramCache]: Analyzing trace with hash -486297875, now seen corresponding path program 15 times [2020-08-22 21:55:04,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:55:04,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441401090] [2020-08-22 21:55:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:55:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,088 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-08-22 21:55:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:55:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:55:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:08,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:09,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:09,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-08-22 21:55:11,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441401090] [2020-08-22 21:55:11,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:55:11,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-08-22 21:55:11,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269356027] [2020-08-22 21:55:11,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-08-22 21:55:11,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:55:11,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-08-22 21:55:11,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4690, Unknown=0, NotChecked=0, Total=4830 [2020-08-22 21:55:11,381 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 70 states. [2020-08-22 21:55:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:55:23,396 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2020-08-22 21:55:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-08-22 21:55:23,398 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 291 [2020-08-22 21:55:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:55:23,400 INFO L225 Difference]: With dead ends: 342 [2020-08-22 21:55:23,400 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 21:55:23,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=610, Invalid=26122, Unknown=0, NotChecked=0, Total=26732 [2020-08-22 21:55:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 21:55:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 188. [2020-08-22 21:55:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-22 21:55:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2020-08-22 21:55:23,554 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 291 [2020-08-22 21:55:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:55:23,555 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2020-08-22 21:55:23,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-08-22 21:55:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2020-08-22 21:55:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-08-22 21:55:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:55:23,557 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:55:23,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 21:55:23,557 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:55:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:55:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash -755828464, now seen corresponding path program 15 times [2020-08-22 21:55:23,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:55:23,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506714421] [2020-08-22 21:55:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:55:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:23,767 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-08-22 21:55:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:55:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:55:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:27,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:28,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-08-22 21:55:30,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506714421] [2020-08-22 21:55:30,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:55:30,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-08-22 21:55:30,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630301618] [2020-08-22 21:55:30,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-08-22 21:55:30,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:55:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-08-22 21:55:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2020-08-22 21:55:30,805 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 71 states. [2020-08-22 21:55:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:55:43,934 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2020-08-22 21:55:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-08-22 21:55:43,935 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 300 [2020-08-22 21:55:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:55:43,937 INFO L225 Difference]: With dead ends: 352 [2020-08-22 21:55:43,938 INFO L226 Difference]: Without dead ends: 345 [2020-08-22 21:55:43,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4719 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=623, Invalid=27433, Unknown=0, NotChecked=0, Total=28056 [2020-08-22 21:55:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-08-22 21:55:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 193. [2020-08-22 21:55:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-22 21:55:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2020-08-22 21:55:44,090 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 300 [2020-08-22 21:55:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:55:44,091 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2020-08-22 21:55:44,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-08-22 21:55:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2020-08-22 21:55:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-22 21:55:44,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:55:44,093 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:55:44,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 21:55:44,094 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:55:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:55:44,094 INFO L82 PathProgramCache]: Analyzing trace with hash 968075493, now seen corresponding path program 16 times [2020-08-22 21:55:44,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:55:44,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881911026] [2020-08-22 21:55:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:55:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,347 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-08-22 21:55:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:55:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:55:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:47,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:48,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:55:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:55:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2240 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-08-22 21:55:51,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881911026] [2020-08-22 21:55:51,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:55:51,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-08-22 21:55:51,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144698753] [2020-08-22 21:55:51,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-08-22 21:55:51,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:55:51,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-08-22 21:55:51,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5254, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 21:55:51,494 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 74 states. [2020-08-22 21:56:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:56:06,261 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2020-08-22 21:56:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-08-22 21:56:06,262 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 309 [2020-08-22 21:56:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:56:06,265 INFO L225 Difference]: With dead ends: 362 [2020-08-22 21:56:06,266 INFO L226 Difference]: Without dead ends: 355 [2020-08-22 21:56:06,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5349 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=648, Invalid=29454, Unknown=0, NotChecked=0, Total=30102 [2020-08-22 21:56:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-22 21:56:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 198. [2020-08-22 21:56:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-22 21:56:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-08-22 21:56:06,554 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 309 [2020-08-22 21:56:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:56:06,554 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-08-22 21:56:06,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-08-22 21:56:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-08-22 21:56:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-22 21:56:06,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:56:06,559 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:56:06,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-22 21:56:06,560 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:56:06,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:56:06,566 INFO L82 PathProgramCache]: Analyzing trace with hash -953467180, now seen corresponding path program 16 times [2020-08-22 21:56:06,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:56:06,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635644479] [2020-08-22 21:56:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:56:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:06,819 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 15 [2020-08-22 21:56:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:56:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:56:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:11,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2384 backedges. 0 proven. 1312 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-08-22 21:56:14,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635644479] [2020-08-22 21:56:14,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:56:14,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-08-22 21:56:14,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875584988] [2020-08-22 21:56:14,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-08-22 21:56:14,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:56:14,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-08-22 21:56:14,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 21:56:14,933 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 75 states. [2020-08-22 21:56:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:56:32,000 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2020-08-22 21:56:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-08-22 21:56:32,001 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 318 [2020-08-22 21:56:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:56:32,003 INFO L225 Difference]: With dead ends: 372 [2020-08-22 21:56:32,003 INFO L226 Difference]: Without dead ends: 365 [2020-08-22 21:56:32,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5320 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=661, Invalid=30845, Unknown=0, NotChecked=0, Total=31506 [2020-08-22 21:56:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-22 21:56:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 203. [2020-08-22 21:56:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-22 21:56:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2020-08-22 21:56:32,274 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 318 [2020-08-22 21:56:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:56:32,275 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2020-08-22 21:56:32,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-08-22 21:56:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2020-08-22 21:56:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-22 21:56:32,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:56:32,277 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:56:32,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-22 21:56:32,278 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:56:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:56:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash 661506653, now seen corresponding path program 17 times [2020-08-22 21:56:32,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:56:32,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372000366] [2020-08-22 21:56:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:56:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:32,613 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-08-22 21:56:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:56:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:56:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:35,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:36,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:38,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:56:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:56:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2533 backedges. 0 proven. 1394 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-08-22 21:56:41,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372000366] [2020-08-22 21:56:41,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:56:41,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-08-22 21:56:41,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658717344] [2020-08-22 21:56:41,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-08-22 21:56:41,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:56:41,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-08-22 21:56:41,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=5850, Unknown=0, NotChecked=0, Total=6006 [2020-08-22 21:56:41,538 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 78 states. [2020-08-22 21:56:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:56:59,509 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2020-08-22 21:56:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-08-22 21:56:59,511 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 327 [2020-08-22 21:56:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:56:59,514 INFO L225 Difference]: With dead ends: 382 [2020-08-22 21:56:59,515 INFO L226 Difference]: Without dead ends: 375 [2020-08-22 21:56:59,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5988 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=686, Invalid=32986, Unknown=0, NotChecked=0, Total=33672 [2020-08-22 21:56:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-08-22 21:56:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 208. [2020-08-22 21:56:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-22 21:56:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2020-08-22 21:56:59,859 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 327 [2020-08-22 21:56:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:56:59,860 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2020-08-22 21:56:59,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-08-22 21:56:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2020-08-22 21:56:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-08-22 21:56:59,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:56:59,863 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:56:59,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-22 21:56:59,863 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:56:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:56:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 318181912, now seen corresponding path program 17 times [2020-08-22 21:56:59,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:56:59,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457146279] [2020-08-22 21:56:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:56:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,220 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-08-22 21:57:00,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:57:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:57:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:05,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 1479 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-08-22 21:57:10,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457146279] [2020-08-22 21:57:10,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:57:10,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-08-22 21:57:10,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373675027] [2020-08-22 21:57:10,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-08-22 21:57:10,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:57:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-08-22 21:57:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6161, Unknown=0, NotChecked=0, Total=6320 [2020-08-22 21:57:10,166 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 80 states. [2020-08-22 21:57:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:57:32,132 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2020-08-22 21:57:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-08-22 21:57:32,132 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 336 [2020-08-22 21:57:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:57:32,135 INFO L225 Difference]: With dead ends: 392 [2020-08-22 21:57:32,135 INFO L226 Difference]: Without dead ends: 385 [2020-08-22 21:57:32,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=710, Invalid=35200, Unknown=0, NotChecked=0, Total=35910 [2020-08-22 21:57:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-08-22 21:57:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 213. [2020-08-22 21:57:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 21:57:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2020-08-22 21:57:32,411 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 336 [2020-08-22 21:57:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:57:32,412 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2020-08-22 21:57:32,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-08-22 21:57:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2020-08-22 21:57:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-08-22 21:57:32,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:57:32,415 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:57:32,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-22 21:57:32,416 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:57:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:57:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash -943565995, now seen corresponding path program 18 times [2020-08-22 21:57:32,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:57:32,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637843982] [2020-08-22 21:57:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:57:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:32,805 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-08-22 21:57:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:57:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:57:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:34,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:35,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:36,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:36,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:37,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:38,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:57:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:57:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 0 proven. 1566 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-08-22 21:57:43,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637843982] [2020-08-22 21:57:43,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:57:43,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-08-22 21:57:43,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777293255] [2020-08-22 21:57:43,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-08-22 21:57:43,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:57:43,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-08-22 21:57:43,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6478, Unknown=0, NotChecked=0, Total=6642 [2020-08-22 21:57:43,727 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 82 states. [2020-08-22 21:58:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:58:05,928 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2020-08-22 21:58:05,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-08-22 21:58:05,930 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 345 [2020-08-22 21:58:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:58:05,933 INFO L225 Difference]: With dead ends: 402 [2020-08-22 21:58:05,933 INFO L226 Difference]: Without dead ends: 395 [2020-08-22 21:58:05,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6663 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=724, Invalid=36718, Unknown=0, NotChecked=0, Total=37442 [2020-08-22 21:58:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-22 21:58:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 218. [2020-08-22 21:58:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 21:58:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2020-08-22 21:58:06,169 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 345 [2020-08-22 21:58:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:58:06,170 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2020-08-22 21:58:06,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-08-22 21:58:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2020-08-22 21:58:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-08-22 21:58:06,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:58:06,173 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:58:06,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-22 21:58:06,173 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:58:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:58:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1845228252, now seen corresponding path program 18 times [2020-08-22 21:58:06,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:58:06,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861935433] [2020-08-22 21:58:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:58:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:06,485 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 [2020-08-22 21:58:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:58:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:58:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:06,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:06,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:12,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 0 proven. 1656 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-08-22 21:58:18,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861935433] [2020-08-22 21:58:18,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:58:18,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-08-22 21:58:18,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597770138] [2020-08-22 21:58:18,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-08-22 21:58:18,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:58:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-08-22 21:58:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6805, Unknown=0, NotChecked=0, Total=6972 [2020-08-22 21:58:18,148 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 84 states. [2020-08-22 21:58:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:58:42,283 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2020-08-22 21:58:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-08-22 21:58:42,284 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 354 [2020-08-22 21:58:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:58:42,286 INFO L225 Difference]: With dead ends: 412 [2020-08-22 21:58:42,286 INFO L226 Difference]: Without dead ends: 405 [2020-08-22 21:58:42,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6938 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=748, Invalid=39052, Unknown=0, NotChecked=0, Total=39800 [2020-08-22 21:58:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-22 21:58:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 223. [2020-08-22 21:58:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-22 21:58:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2020-08-22 21:58:42,542 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 354 [2020-08-22 21:58:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:58:42,543 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2020-08-22 21:58:42,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-08-22 21:58:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2020-08-22 21:58:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-08-22 21:58:42,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:58:42,545 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:58:42,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-22 21:58:42,545 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:58:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:58:42,546 INFO L82 PathProgramCache]: Analyzing trace with hash 592020429, now seen corresponding path program 19 times [2020-08-22 21:58:42,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:58:42,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004977706] [2020-08-22 21:58:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:58:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:42,908 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-08-22 21:58:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:58:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:58:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:58:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:58:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 1748 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-08-22 21:58:56,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004977706] [2020-08-22 21:58:56,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:58:56,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-08-22 21:58:56,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268491079] [2020-08-22 21:58:56,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-08-22 21:58:56,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:58:56,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-08-22 21:58:56,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7138, Unknown=0, NotChecked=0, Total=7310 [2020-08-22 21:58:56,260 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 86 states. [2020-08-22 21:59:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:59:27,749 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2020-08-22 21:59:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-08-22 21:59:27,752 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 363 [2020-08-22 21:59:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:59:27,754 INFO L225 Difference]: With dead ends: 422 [2020-08-22 21:59:27,754 INFO L226 Difference]: Without dead ends: 415 [2020-08-22 21:59:27,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7374 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=762, Invalid=40650, Unknown=0, NotChecked=0, Total=41412 [2020-08-22 21:59:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-22 21:59:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 228. [2020-08-22 21:59:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-22 21:59:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 230 transitions. [2020-08-22 21:59:28,033 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 230 transitions. Word has length 363 [2020-08-22 21:59:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:59:28,034 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 230 transitions. [2020-08-22 21:59:28,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-08-22 21:59:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 230 transitions. [2020-08-22 21:59:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-08-22 21:59:28,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:59:28,036 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:59:28,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-08-22 21:59:28,037 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:59:28,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:59:28,037 INFO L82 PathProgramCache]: Analyzing trace with hash -844668640, now seen corresponding path program 19 times [2020-08-22 21:59:28,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:59:28,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649423737] [2020-08-22 21:59:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:59:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:28,354 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-08-22 21:59:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:59:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:59:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:29,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:38,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 21:59:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:59:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 1843 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-08-22 21:59:43,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649423737] [2020-08-22 21:59:43,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:59:43,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-08-22 21:59:43,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682395922] [2020-08-22 21:59:43,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-08-22 21:59:43,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:59:43,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-08-22 21:59:43,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2020-08-22 21:59:43,950 INFO L87 Difference]: Start difference. First operand 228 states and 230 transitions. Second operand 87 states. [2020-08-22 22:00:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:00:23,999 INFO L93 Difference]: Finished difference Result 432 states and 434 transitions. [2020-08-22 22:00:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-08-22 22:00:23,999 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 372 [2020-08-22 22:00:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:00:24,001 INFO L225 Difference]: With dead ends: 432 [2020-08-22 22:00:24,002 INFO L226 Difference]: Without dead ends: 425 [2020-08-22 22:00:24,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7339 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=775, Invalid=42281, Unknown=0, NotChecked=0, Total=43056 [2020-08-22 22:00:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-22 22:00:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 233. [2020-08-22 22:00:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 22:00:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2020-08-22 22:00:24,287 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 372 [2020-08-22 22:00:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:00:24,287 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2020-08-22 22:00:24,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-08-22 22:00:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2020-08-22 22:00:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-08-22 22:00:24,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:00:24,290 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:00:24,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-08-22 22:00:24,291 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:00:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:00:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 530815941, now seen corresponding path program 20 times [2020-08-22 22:00:24,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:00:24,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507840371] [2020-08-22 22:00:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:00:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:24,638 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-08-22 22:00:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:00:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 22:00:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:26,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:28,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:00:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:00:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3520 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-08-22 22:00:39,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507840371] [2020-08-22 22:00:39,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:00:39,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-08-22 22:00:39,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630419540] [2020-08-22 22:00:39,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-08-22 22:00:39,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:00:39,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-08-22 22:00:39,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=7830, Unknown=0, NotChecked=0, Total=8010 [2020-08-22 22:00:39,710 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 90 states. [2020-08-22 22:01:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:01:14,861 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2020-08-22 22:01:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2020-08-22 22:01:14,863 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 381 [2020-08-22 22:01:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:01:14,865 INFO L225 Difference]: With dead ends: 442 [2020-08-22 22:01:14,865 INFO L226 Difference]: Without dead ends: 435 [2020-08-22 22:01:14,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8121 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=800, Invalid=44782, Unknown=0, NotChecked=0, Total=45582 [2020-08-22 22:01:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-22 22:01:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 238. [2020-08-22 22:01:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 22:01:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2020-08-22 22:01:15,207 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 381 [2020-08-22 22:01:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:01:15,207 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2020-08-22 22:01:15,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-08-22 22:01:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2020-08-22 22:01:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-08-22 22:01:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:01:15,210 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:01:15,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-08-22 22:01:15,210 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:01:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:01:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1898896612, now seen corresponding path program 20 times [2020-08-22 22:01:15,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:01:15,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381902268] [2020-08-22 22:01:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:01:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:15,535 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-08-22 22:01:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:01:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 22:01:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:16,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:21,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:27,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:01:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:01:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3700 backedges. 0 proven. 2040 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2020-08-22 22:01:33,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381902268] [2020-08-22 22:01:33,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:01:33,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-08-22 22:01:33,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620622936] [2020-08-22 22:01:33,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-08-22 22:01:33,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:01:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-08-22 22:01:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8188, Unknown=0, NotChecked=0, Total=8372 [2020-08-22 22:01:33,811 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand 92 states. [2020-08-22 22:02:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:02:21,404 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2020-08-22 22:02:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2020-08-22 22:02:21,404 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 390 [2020-08-22 22:02:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:02:21,406 INFO L225 Difference]: With dead ends: 452 [2020-08-22 22:02:21,406 INFO L226 Difference]: Without dead ends: 445 [2020-08-22 22:02:21,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8508 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=819, Invalid=46923, Unknown=0, NotChecked=0, Total=47742 [2020-08-22 22:02:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-22 22:02:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 243. [2020-08-22 22:02:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-22 22:02:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2020-08-22 22:02:21,736 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 390 [2020-08-22 22:02:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:02:21,737 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2020-08-22 22:02:21,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-08-22 22:02:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2020-08-22 22:02:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-08-22 22:02:21,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:02:21,740 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:02:21,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-08-22 22:02:21,740 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:02:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:02:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash -277292227, now seen corresponding path program 21 times [2020-08-22 22:02:21,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:02:21,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17157105] [2020-08-22 22:02:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:02:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:21,978 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-08-22 22:02:22,184 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-08-22 22:02:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:02:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 22:02:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:22,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:25,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:02:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:02:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 0 proven. 2142 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2020-08-22 22:02:41,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17157105] [2020-08-22 22:02:41,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:02:41,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-08-22 22:02:41,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662485219] [2020-08-22 22:02:41,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-08-22 22:02:41,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:02:41,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-08-22 22:02:41,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8554, Unknown=0, NotChecked=0, Total=8742 [2020-08-22 22:02:41,950 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 94 states. [2020-08-22 22:03:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:03:39,303 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2020-08-22 22:03:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2020-08-22 22:03:39,306 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 399 [2020-08-22 22:03:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:03:39,309 INFO L225 Difference]: With dead ends: 462 [2020-08-22 22:03:39,309 INFO L226 Difference]: Without dead ends: 455 [2020-08-22 22:03:39,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8904 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=838, Invalid=49114, Unknown=0, NotChecked=0, Total=49952 [2020-08-22 22:03:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-22 22:03:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 248. [2020-08-22 22:03:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 22:03:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 250 transitions. [2020-08-22 22:03:39,722 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 250 transitions. Word has length 399 [2020-08-22 22:03:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:03:39,723 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 250 transitions. [2020-08-22 22:03:39,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-08-22 22:03:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 250 transitions. [2020-08-22 22:03:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-08-22 22:03:39,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:03:39,726 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:03:39,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-08-22 22:03:39,726 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:03:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:03:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1838147112, now seen corresponding path program 21 times [2020-08-22 22:03:39,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:03:39,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517552274] [2020-08-22 22:03:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:03:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,097 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-08-22 22:03:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:03:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 22:03:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:42,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:43,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:44,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:49,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:50,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:51,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:55,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:56,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:03:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:03:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:04:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 2247 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2020-08-22 22:04:01,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517552274] [2020-08-22 22:04:01,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:04:01,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-08-22 22:04:01,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509937391] [2020-08-22 22:04:01,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-08-22 22:04:01,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:04:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-08-22 22:04:01,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8742, Unknown=0, NotChecked=0, Total=8930 [2020-08-22 22:04:01,570 INFO L87 Difference]: Start difference. First operand 248 states and 250 transitions. Second operand 95 states.