/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/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:47:51,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:47:51,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:47:51,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:47:51,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:47:51,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:47:51,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:47:51,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:47:51,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:47:51,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:47:51,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:47:51,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:47:51,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:47:51,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:47:51,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:47:51,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:47:51,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:47:51,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:47:51,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:47:51,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:47:51,196 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 22:47:51,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:47:51,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:47:51,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:47:51,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:47:51,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:47:51,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:47:51,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:47:51,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:47:51,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:47:51,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:47:51,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:47:51,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:47:51,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:47:51,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:47:51,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:47:51,220 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:47:51,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:47:51,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:47:51,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:47:51,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:47:51,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:47:51,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:47:51,222 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 22:47:51,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:47:51,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:47:51,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:47:51,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:47:51,509 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:47:51,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-08-22 22:47:51,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b30118/b4403c42473d4962bee28243f5168d12/FLAG46d79c48b [2020-08-22 22:47:52,137 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:47:52,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-08-22 22:47:52,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b30118/b4403c42473d4962bee28243f5168d12/FLAG46d79c48b [2020-08-22 22:47:52,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b30118/b4403c42473d4962bee28243f5168d12 [2020-08-22 22:47:52,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:47:52,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:47:52,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:47:52,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:47:52,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:47:52,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:47:52" (1/1) ... [2020-08-22 22:47:52,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:52, skipping insertion in model container [2020-08-22 22:47:52,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:47:52" (1/1) ... [2020-08-22 22:47:52,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:47:52,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:47:52,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:47:52,899 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:47:53,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:47:53,164 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:47:53,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53 WrapperNode [2020-08-22 22:47:53,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:47:53,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:47:53,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:47:53,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:47:53,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (1/1) ... [2020-08-22 22:47:53,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:47:53,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:47:53,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:47:53,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:47:53,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (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 22:47:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:47:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:47:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-22 22:47:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:47:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:47:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:47:54,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:47:54,741 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:47:54,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:47:54 BoogieIcfgContainer [2020-08-22 22:47:54,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:47:54,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:47:54,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:47:54,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:47:54,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:47:52" (1/3) ... [2020-08-22 22:47:54,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756f0caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:47:54, skipping insertion in model container [2020-08-22 22:47:54,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:53" (2/3) ... [2020-08-22 22:47:54,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756f0caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:47:54, skipping insertion in model container [2020-08-22 22:47:54,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:47:54" (3/3) ... [2020-08-22 22:47:54,759 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-08-22 22:47:54,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:47:54,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:47:54,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:47:54,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:47:54,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:47:54,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:47:54,822 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:47:54,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:47:54,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:47:54,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:47:54,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:47:54,847 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-08-22 22:47:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 22:47:54,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:47:54,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:54,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:47:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:47:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-08-22 22:47:54,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:47:54,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709321996] [2020-08-22 22:47:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:47:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:47:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:47:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:47:55,362 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 22:47:55,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709321996] [2020-08-22 22:47:55,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:47:55,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:47:55,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287580925] [2020-08-22 22:47:55,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:47:55,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:47:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:47:55,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:47:55,396 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-08-22 22:47:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:47:58,146 INFO L93 Difference]: Finished difference Result 1246 states and 1816 transitions. [2020-08-22 22:47:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:47:58,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-08-22 22:47:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:47:58,169 INFO L225 Difference]: With dead ends: 1246 [2020-08-22 22:47:58,169 INFO L226 Difference]: Without dead ends: 727 [2020-08-22 22:47:58,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:47:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-22 22:47:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 697. [2020-08-22 22:47:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-08-22 22:47:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 849 transitions. [2020-08-22 22:47:58,351 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 849 transitions. Word has length 76 [2020-08-22 22:47:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:47:58,352 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 849 transitions. [2020-08-22 22:47:58,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:47:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 849 transitions. [2020-08-22 22:47:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-08-22 22:47:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:47:58,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 22:47:58,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:47:58,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:47:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:47:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-08-22 22:47:58,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:47:58,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112265474] [2020-08-22 22:47:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:47:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:47:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:47:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:47:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:47:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:47:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:47:58,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112265474] [2020-08-22 22:47:58,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:47:58,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:47:58,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825811192] [2020-08-22 22:47:58,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:47:58,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:47:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:47:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:47:58,774 INFO L87 Difference]: Start difference. First operand 697 states and 849 transitions. Second operand 8 states. [2020-08-22 22:48:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:01,960 INFO L93 Difference]: Finished difference Result 2464 states and 3167 transitions. [2020-08-22 22:48:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:48:01,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-08-22 22:48:01,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:01,989 INFO L225 Difference]: With dead ends: 2464 [2020-08-22 22:48:01,990 INFO L226 Difference]: Without dead ends: 1782 [2020-08-22 22:48:01,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:48:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-08-22 22:48:02,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1667. [2020-08-22 22:48:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-08-22 22:48:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2089 transitions. [2020-08-22 22:48:02,192 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2089 transitions. Word has length 165 [2020-08-22 22:48:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:02,193 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2089 transitions. [2020-08-22 22:48:02,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:48:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2089 transitions. [2020-08-22 22:48:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-22 22:48:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:02,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:02,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:48:02,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1682807623, now seen corresponding path program 1 times [2020-08-22 22:48:02,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:02,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271358110] [2020-08-22 22:48:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:02,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271358110] [2020-08-22 22:48:02,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:48:02,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:48:02,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780987491] [2020-08-22 22:48:02,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:48:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:02,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:48:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:48:02,480 INFO L87 Difference]: Start difference. First operand 1667 states and 2089 transitions. Second operand 8 states. [2020-08-22 22:48:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:04,819 INFO L93 Difference]: Finished difference Result 4069 states and 5422 transitions. [2020-08-22 22:48:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:48:04,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-08-22 22:48:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:04,854 INFO L225 Difference]: With dead ends: 4069 [2020-08-22 22:48:04,854 INFO L226 Difference]: Without dead ends: 2417 [2020-08-22 22:48:04,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:48:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2020-08-22 22:48:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2303. [2020-08-22 22:48:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-08-22 22:48:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2900 transitions. [2020-08-22 22:48:05,109 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2900 transitions. Word has length 208 [2020-08-22 22:48:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:05,111 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2900 transitions. [2020-08-22 22:48:05,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:48:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2900 transitions. [2020-08-22 22:48:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-08-22 22:48:05,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:05,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:05,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:48:05,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1390539425, now seen corresponding path program 1 times [2020-08-22 22:48:05,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:05,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305222336] [2020-08-22 22:48:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:05,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 22:48:05,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305222336] [2020-08-22 22:48:05,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:05,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:05,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118556100] [2020-08-22 22:48:05,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:05,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:05,549 INFO L87 Difference]: Start difference. First operand 2303 states and 2900 transitions. Second operand 7 states. [2020-08-22 22:48:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:08,114 INFO L93 Difference]: Finished difference Result 3985 states and 5163 transitions. [2020-08-22 22:48:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:48:08,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-08-22 22:48:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:08,158 INFO L225 Difference]: With dead ends: 3985 [2020-08-22 22:48:08,158 INFO L226 Difference]: Without dead ends: 3983 [2020-08-22 22:48:08,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:48:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2020-08-22 22:48:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3067. [2020-08-22 22:48:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3067 states. [2020-08-22 22:48:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 3950 transitions. [2020-08-22 22:48:08,605 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 3950 transitions. Word has length 222 [2020-08-22 22:48:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:08,606 INFO L479 AbstractCegarLoop]: Abstraction has 3067 states and 3950 transitions. [2020-08-22 22:48:08,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 3950 transitions. [2020-08-22 22:48:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-22 22:48:08,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:08,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:08,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:48:08,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:08,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1504222835, now seen corresponding path program 1 times [2020-08-22 22:48:08,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:08,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543470278] [2020-08-22 22:48:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 186 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:48:08,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543470278] [2020-08-22 22:48:08,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:08,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:48:08,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451441318] [2020-08-22 22:48:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:48:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:48:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:48:08,937 INFO L87 Difference]: Start difference. First operand 3067 states and 3950 transitions. Second operand 10 states. [2020-08-22 22:48:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:13,558 INFO L93 Difference]: Finished difference Result 7409 states and 9548 transitions. [2020-08-22 22:48:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:48:13,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-08-22 22:48:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:13,590 INFO L225 Difference]: With dead ends: 7409 [2020-08-22 22:48:13,591 INFO L226 Difference]: Without dead ends: 4357 [2020-08-22 22:48:13,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:48:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2020-08-22 22:48:14,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3423. [2020-08-22 22:48:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2020-08-22 22:48:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4237 transitions. [2020-08-22 22:48:14,048 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4237 transitions. Word has length 244 [2020-08-22 22:48:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:14,049 INFO L479 AbstractCegarLoop]: Abstraction has 3423 states and 4237 transitions. [2020-08-22 22:48:14,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:48:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4237 transitions. [2020-08-22 22:48:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-22 22:48:14,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:14,063 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:14,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:48:14,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:14,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2056188943, now seen corresponding path program 1 times [2020-08-22 22:48:14,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:14,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503905790] [2020-08-22 22:48:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 22:48:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 263 proven. 73 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-08-22 22:48:14,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503905790] [2020-08-22 22:48:14,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:14,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:14,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256302391] [2020-08-22 22:48:14,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:14,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:14,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:14,382 INFO L87 Difference]: Start difference. First operand 3423 states and 4237 transitions. Second operand 7 states. [2020-08-22 22:48:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:16,558 INFO L93 Difference]: Finished difference Result 7031 states and 8729 transitions. [2020-08-22 22:48:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:48:16,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-08-22 22:48:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:16,586 INFO L225 Difference]: With dead ends: 7031 [2020-08-22 22:48:16,586 INFO L226 Difference]: Without dead ends: 3623 [2020-08-22 22:48:16,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:48:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2020-08-22 22:48:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3591. [2020-08-22 22:48:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-08-22 22:48:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 4376 transitions. [2020-08-22 22:48:17,153 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 4376 transitions. Word has length 327 [2020-08-22 22:48:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:17,153 INFO L479 AbstractCegarLoop]: Abstraction has 3591 states and 4376 transitions. [2020-08-22 22:48:17,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 4376 transitions. [2020-08-22 22:48:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-08-22 22:48:17,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:17,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 22:48:17,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:48:17,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:17,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1129363078, now seen corresponding path program 1 times [2020-08-22 22:48:17,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:17,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057993135] [2020-08-22 22:48:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:17,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 22:48:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 22:48:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 180 proven. 141 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-08-22 22:48:17,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057993135] [2020-08-22 22:48:17,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:17,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:17,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941987232] [2020-08-22 22:48:17,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:17,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:17,501 INFO L87 Difference]: Start difference. First operand 3591 states and 4376 transitions. Second operand 7 states. [2020-08-22 22:48:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:19,315 INFO L93 Difference]: Finished difference Result 7348 states and 8960 transitions. [2020-08-22 22:48:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:48:19,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-08-22 22:48:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:19,345 INFO L225 Difference]: With dead ends: 7348 [2020-08-22 22:48:19,345 INFO L226 Difference]: Without dead ends: 3772 [2020-08-22 22:48:19,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:48:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2020-08-22 22:48:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3149. [2020-08-22 22:48:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2020-08-22 22:48:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 3768 transitions. [2020-08-22 22:48:19,774 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 3768 transitions. Word has length 334 [2020-08-22 22:48:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:19,775 INFO L479 AbstractCegarLoop]: Abstraction has 3149 states and 3768 transitions. [2020-08-22 22:48:19,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 3768 transitions. [2020-08-22 22:48:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-08-22 22:48:19,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:19,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:19,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:48:19,789 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1318397123, now seen corresponding path program 1 times [2020-08-22 22:48:19,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:19,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132696191] [2020-08-22 22:48:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 22:48:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 200 proven. 204 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 22:48:20,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132696191] [2020-08-22 22:48:20,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:20,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:48:20,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231861029] [2020-08-22 22:48:20,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:48:20,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:20,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:48:20,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:20,578 INFO L87 Difference]: Start difference. First operand 3149 states and 3768 transitions. Second operand 11 states. [2020-08-22 22:48:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:24,345 INFO L93 Difference]: Finished difference Result 7355 states and 8941 transitions. [2020-08-22 22:48:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:48:24,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 339 [2020-08-22 22:48:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:24,371 INFO L225 Difference]: With dead ends: 7355 [2020-08-22 22:48:24,371 INFO L226 Difference]: Without dead ends: 4371 [2020-08-22 22:48:24,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:48:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2020-08-22 22:48:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4122. [2020-08-22 22:48:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-08-22 22:48:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4977 transitions. [2020-08-22 22:48:24,908 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4977 transitions. Word has length 339 [2020-08-22 22:48:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:24,909 INFO L479 AbstractCegarLoop]: Abstraction has 4122 states and 4977 transitions. [2020-08-22 22:48:24,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:48:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4977 transitions. [2020-08-22 22:48:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-08-22 22:48:24,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:24,929 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:24,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:48:24,929 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1305997719, now seen corresponding path program 1 times [2020-08-22 22:48:24,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:24,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575333494] [2020-08-22 22:48:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 22:48:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 22:48:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 344 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:48:25,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575333494] [2020-08-22 22:48:25,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:25,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:48:25,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338560534] [2020-08-22 22:48:25,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:48:25,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:48:25,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:25,822 INFO L87 Difference]: Start difference. First operand 4122 states and 4977 transitions. Second operand 11 states. [2020-08-22 22:48:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:30,277 INFO L93 Difference]: Finished difference Result 10649 states and 12967 transitions. [2020-08-22 22:48:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:48:30,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 402 [2020-08-22 22:48:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:30,311 INFO L225 Difference]: With dead ends: 10649 [2020-08-22 22:48:30,311 INFO L226 Difference]: Without dead ends: 4615 [2020-08-22 22:48:30,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:48:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2020-08-22 22:48:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3552. [2020-08-22 22:48:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2020-08-22 22:48:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 3945 transitions. [2020-08-22 22:48:30,780 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 3945 transitions. Word has length 402 [2020-08-22 22:48:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:30,781 INFO L479 AbstractCegarLoop]: Abstraction has 3552 states and 3945 transitions. [2020-08-22 22:48:30,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:48:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 3945 transitions. [2020-08-22 22:48:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-08-22 22:48:30,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:30,800 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:30,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:48:30,800 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1447415977, now seen corresponding path program 1 times [2020-08-22 22:48:30,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:30,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115488173] [2020-08-22 22:48:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 22:48:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 22:48:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 22:48:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 215 proven. 431 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-22 22:48:31,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115488173] [2020-08-22 22:48:31,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:31,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 22:48:31,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026436142] [2020-08-22 22:48:31,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 22:48:31,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:31,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 22:48:31,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:48:31,602 INFO L87 Difference]: Start difference. First operand 3552 states and 3945 transitions. Second operand 16 states. [2020-08-22 22:48:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:37,273 INFO L93 Difference]: Finished difference Result 9207 states and 10393 transitions. [2020-08-22 22:48:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 22:48:37,274 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 458 [2020-08-22 22:48:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:37,302 INFO L225 Difference]: With dead ends: 9207 [2020-08-22 22:48:37,302 INFO L226 Difference]: Without dead ends: 5669 [2020-08-22 22:48:37,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 22:48:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2020-08-22 22:48:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4637. [2020-08-22 22:48:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4637 states. [2020-08-22 22:48:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 5203 transitions. [2020-08-22 22:48:38,203 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 5203 transitions. Word has length 458 [2020-08-22 22:48:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:38,203 INFO L479 AbstractCegarLoop]: Abstraction has 4637 states and 5203 transitions. [2020-08-22 22:48:38,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 22:48:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 5203 transitions. [2020-08-22 22:48:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-08-22 22:48:38,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:38,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:38,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:48:38,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -968828418, now seen corresponding path program 1 times [2020-08-22 22:48:38,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:38,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633969052] [2020-08-22 22:48:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:48:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 22:48:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-22 22:48:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 288 proven. 370 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-22 22:48:38,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633969052] [2020-08-22 22:48:38,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:38,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:48:38,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822929890] [2020-08-22 22:48:38,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:48:38,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:48:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:48:38,989 INFO L87 Difference]: Start difference. First operand 4637 states and 5203 transitions. Second operand 17 states. [2020-08-22 22:48:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:46,260 INFO L93 Difference]: Finished difference Result 13156 states and 14911 transitions. [2020-08-22 22:48:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 22:48:46,261 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 476 [2020-08-22 22:48:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:46,298 INFO L225 Difference]: With dead ends: 13156 [2020-08-22 22:48:46,298 INFO L226 Difference]: Without dead ends: 8689 [2020-08-22 22:48:46,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1073, Invalid=3087, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 22:48:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8689 states. [2020-08-22 22:48:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8689 to 7187. [2020-08-22 22:48:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7187 states. [2020-08-22 22:48:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7187 states to 7187 states and 8165 transitions. [2020-08-22 22:48:47,158 INFO L78 Accepts]: Start accepts. Automaton has 7187 states and 8165 transitions. Word has length 476 [2020-08-22 22:48:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:47,158 INFO L479 AbstractCegarLoop]: Abstraction has 7187 states and 8165 transitions. [2020-08-22 22:48:47,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:48:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7187 states and 8165 transitions. [2020-08-22 22:48:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-08-22 22:48:47,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:47,177 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:47,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:48:47,178 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1319219488, now seen corresponding path program 1 times [2020-08-22 22:48:47,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:47,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476167276] [2020-08-22 22:48:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 22:48:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 22:48:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 22:48:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 421 proven. 73 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-08-22 22:48:47,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476167276] [2020-08-22 22:48:47,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:47,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652060529] [2020-08-22 22:48:47,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:47,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:47,570 INFO L87 Difference]: Start difference. First operand 7187 states and 8165 transitions. Second operand 7 states. [2020-08-22 22:48:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:50,180 INFO L93 Difference]: Finished difference Result 14841 states and 16969 transitions. [2020-08-22 22:48:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:48:50,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-08-22 22:48:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:50,216 INFO L225 Difference]: With dead ends: 14841 [2020-08-22 22:48:50,217 INFO L226 Difference]: Without dead ends: 7824 [2020-08-22 22:48:50,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2020-08-22 22:48:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 7174. [2020-08-22 22:48:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7174 states. [2020-08-22 22:48:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7174 states to 7174 states and 8097 transitions. [2020-08-22 22:48:51,135 INFO L78 Accepts]: Start accepts. Automaton has 7174 states and 8097 transitions. Word has length 491 [2020-08-22 22:48:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:51,136 INFO L479 AbstractCegarLoop]: Abstraction has 7174 states and 8097 transitions. [2020-08-22 22:48:51,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7174 states and 8097 transitions. [2020-08-22 22:48:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-08-22 22:48:51,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:51,165 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:51,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:48:51,165 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:51,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:51,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1638987856, now seen corresponding path program 1 times [2020-08-22 22:48:51,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:51,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925743553] [2020-08-22 22:48:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 22:48:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 22:48:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 22:48:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 356 proven. 149 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-08-22 22:48:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925743553] [2020-08-22 22:48:51,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:51,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:51,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267238583] [2020-08-22 22:48:51,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:51,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:51,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:51,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:51,564 INFO L87 Difference]: Start difference. First operand 7174 states and 8097 transitions. Second operand 7 states. [2020-08-22 22:48:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:54,026 INFO L93 Difference]: Finished difference Result 13552 states and 15350 transitions. [2020-08-22 22:48:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:48:54,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 495 [2020-08-22 22:48:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:54,057 INFO L225 Difference]: With dead ends: 13552 [2020-08-22 22:48:54,057 INFO L226 Difference]: Without dead ends: 6548 [2020-08-22 22:48:54,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:48:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2020-08-22 22:48:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6376. [2020-08-22 22:48:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6376 states. [2020-08-22 22:48:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 6966 transitions. [2020-08-22 22:48:54,836 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 6966 transitions. Word has length 495 [2020-08-22 22:48:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:54,837 INFO L479 AbstractCegarLoop]: Abstraction has 6376 states and 6966 transitions. [2020-08-22 22:48:54,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 6966 transitions. [2020-08-22 22:48:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-08-22 22:48:54,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:54,857 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:54,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:48:54,857 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:54,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2093968034, now seen corresponding path program 1 times [2020-08-22 22:48:54,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:54,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984094784] [2020-08-22 22:48:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:48:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 22:48:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 22:48:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 199 proven. 113 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2020-08-22 22:48:56,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984094784] [2020-08-22 22:48:56,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:56,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:48:56,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376629594] [2020-08-22 22:48:56,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:48:56,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:56,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:48:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:48:56,027 INFO L87 Difference]: Start difference. First operand 6376 states and 6966 transitions. Second operand 19 states. [2020-08-22 22:49:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:03,144 INFO L93 Difference]: Finished difference Result 16099 states and 17700 transitions. [2020-08-22 22:49:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:49:03,145 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 520 [2020-08-22 22:49:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:03,183 INFO L225 Difference]: With dead ends: 16099 [2020-08-22 22:49:03,183 INFO L226 Difference]: Without dead ends: 9893 [2020-08-22 22:49:03,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2020-08-22 22:49:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2020-08-22 22:49:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 8396. [2020-08-22 22:49:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2020-08-22 22:49:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 9238 transitions. [2020-08-22 22:49:04,319 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 9238 transitions. Word has length 520 [2020-08-22 22:49:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:04,319 INFO L479 AbstractCegarLoop]: Abstraction has 8396 states and 9238 transitions. [2020-08-22 22:49:04,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:49:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 9238 transitions. [2020-08-22 22:49:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-08-22 22:49:04,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:49:04,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 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 22:49:04,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:49:04,332 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:49:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:49:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 185982704, now seen corresponding path program 1 times [2020-08-22 22:49:04,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:49:04,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413323608] [2020-08-22 22:49:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:49:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:49:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:49:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:49:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 22:49:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-08-22 22:49:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 479 proven. 232 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-08-22 22:49:05,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413323608] [2020-08-22 22:49:05,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:49:05,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 22:49:05,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415468840] [2020-08-22 22:49:05,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 22:49:05,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:49:05,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 22:49:05,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:49:05,314 INFO L87 Difference]: Start difference. First operand 8396 states and 9238 transitions. Second operand 20 states. [2020-08-22 22:49:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:13,706 INFO L93 Difference]: Finished difference Result 18065 states and 19880 transitions. [2020-08-22 22:49:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 22:49:13,707 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 526 [2020-08-22 22:49:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:13,716 INFO L225 Difference]: With dead ends: 18065 [2020-08-22 22:49:13,716 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:49:13,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=785, Invalid=2637, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 22:49:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:49:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:49:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:49:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:49:13,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 526 [2020-08-22 22:49:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:13,755 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:49:13,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 22:49:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:49:13,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:49:13,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:49:13,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:49:21,154 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-08-22 22:49:22,016 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:49:22,341 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:49:22,658 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:49:28,962 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-08-22 22:49:32,788 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:49:46,214 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-08-22 22:50:17,877 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:50:25,865 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-08-22 22:50:49,433 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 411 DAG size of output: 315 [2020-08-22 22:50:49,745 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 411 DAG size of output: 315 [2020-08-22 22:50:50,063 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 411 DAG size of output: 315 [2020-08-22 22:50:50,383 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:51:26,198 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 316 [2020-08-22 22:51:35,000 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 315 DAG size of output: 66 [2020-08-22 22:51:36,579 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 318 DAG size of output: 76 [2020-08-22 22:51:38,143 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 322 DAG size of output: 63 [2020-08-22 22:51:39,632 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 298 DAG size of output: 64 [2020-08-22 22:51:40,928 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 302 DAG size of output: 65 [2020-08-22 22:51:42,345 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 311 DAG size of output: 62 [2020-08-22 22:51:45,419 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:51:46,913 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 311 DAG size of output: 67 [2020-08-22 22:51:48,558 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 323 DAG size of output: 74 [2020-08-22 22:51:50,219 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 316 DAG size of output: 73 [2020-08-22 22:51:53,336 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:51:56,452 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:51:58,199 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 315 DAG size of output: 78 [2020-08-22 22:51:59,713 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 324 DAG size of output: 75 [2020-08-22 22:52:01,215 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 319 DAG size of output: 69 [2020-08-22 22:52:02,901 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 342 DAG size of output: 62 [2020-08-22 22:52:04,698 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 344 DAG size of output: 76 [2020-08-22 22:52:06,456 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 325 DAG size of output: 78 [2020-08-22 22:52:08,045 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 315 DAG size of output: 73 [2020-08-22 22:52:09,968 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 365 DAG size of output: 72 [2020-08-22 22:52:11,397 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 305 DAG size of output: 60 [2020-08-22 22:52:13,072 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 327 DAG size of output: 62 [2020-08-22 22:52:14,746 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 319 DAG size of output: 73 [2020-08-22 22:52:16,284 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 310 DAG size of output: 66 [2020-08-22 22:52:18,142 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 347 DAG size of output: 69 [2020-08-22 22:52:19,918 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 317 DAG size of output: 80 [2020-08-22 22:52:21,422 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2020-08-22 22:52:22,911 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2020-08-22 22:52:24,416 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2020-08-22 22:52:26,155 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 313 DAG size of output: 83 [2020-08-22 22:52:27,884 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 342 DAG size of output: 68 [2020-08-22 22:52:31,093 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:52:34,094 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:52:35,747 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:52:37,420 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:52:39,091 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:52:42,138 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:52:43,676 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 308 DAG size of output: 60 [2020-08-22 22:52:46,712 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:52:49,924 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:52:51,579 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:52:53,213 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 22:52:56,270 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:52:59,295 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:00,963 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:53:04,071 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:07,081 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:10,161 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:11,849 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:53:13,564 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:53:15,260 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:53:18,371 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:19,986 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:53:23,052 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:53:24,574 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2020-08-22 22:53:26,576 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 323 DAG size of output: 80 [2020-08-22 22:53:29,905 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:53:33,227 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:53:36,519 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:53:38,213 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 318 DAG size of output: 76 [2020-08-22 22:53:41,538 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:53:44,837 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:53:46,565 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 316 DAG size of output: 66 [2020-08-22 22:53:48,442 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 338 DAG size of output: 62 [2020-08-22 22:53:50,241 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 322 DAG size of output: 71 [2020-08-22 22:53:51,936 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 311 DAG size of output: 67 [2020-08-22 22:53:53,450 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 305 DAG size of output: 67 [2020-08-22 22:53:56,798 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:00,177 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:02,012 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 321 DAG size of output: 80 [2020-08-22 22:54:05,407 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:06,971 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 312 DAG size of output: 70 [2020-08-22 22:54:08,958 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 329 DAG size of output: 79 [2020-08-22 22:54:10,472 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 303 DAG size of output: 60 [2020-08-22 22:54:12,358 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 321 DAG size of output: 70 [2020-08-22 22:54:15,754 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:17,514 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 315 DAG size of output: 73 [2020-08-22 22:54:20,949 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:22,589 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 334 DAG size of output: 65 [2020-08-22 22:54:24,764 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 370 DAG size of output: 77 [2020-08-22 22:54:26,497 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 331 DAG size of output: 63 [2020-08-22 22:54:28,123 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 310 DAG size of output: 70 [2020-08-22 22:54:31,524 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:34,910 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:36,526 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 313 DAG size of output: 66 [2020-08-22 22:54:38,582 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 346 DAG size of output: 70 [2020-08-22 22:54:40,654 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 318 DAG size of output: 69 [2020-08-22 22:54:42,311 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 313 DAG size of output: 71 [2020-08-22 22:54:44,095 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 317 DAG size of output: 75 [2020-08-22 22:54:45,538 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 304 DAG size of output: 69 [2020-08-22 22:54:48,959 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:54:50,775 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:54:53,975 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:54:55,593 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 304 DAG size of output: 67 [2020-08-22 22:54:59,056 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:55:00,861 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 351 DAG size of output: 61 [2020-08-22 22:55:02,598 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 329 DAG size of output: 63 [2020-08-22 22:55:06,053 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:55:07,778 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 334 DAG size of output: 65 [2020-08-22 22:55:09,845 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 359 DAG size of output: 77 [2020-08-22 22:55:11,662 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 315 DAG size of output: 64 [2020-08-22 22:55:13,625 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 351 DAG size of output: 63 [2020-08-22 22:55:15,714 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 324 DAG size of output: 79 [2020-08-22 22:55:17,644 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 315 DAG size of output: 78 [2020-08-22 22:55:19,362 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 315 DAG size of output: 67 [2020-08-22 22:55:22,869 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:55:24,531 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 307 DAG size of output: 64 [2020-08-22 22:55:26,310 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 328 DAG size of output: 64 [2020-08-22 22:55:29,822 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:55:33,386 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:55:35,236 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:55:37,341 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 316 DAG size of output: 77 [2020-08-22 22:55:39,194 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:55:40,875 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 319 DAG size of output: 76 [2020-08-22 22:55:42,703 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 318 DAG size of output: 72 [2020-08-22 22:55:44,917 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 365 DAG size of output: 72 [2020-08-22 22:55:46,881 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 316 DAG size of output: 74 [2020-08-22 22:55:48,620 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 317 DAG size of output: 70 [2020-08-22 22:55:50,792 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 360 DAG size of output: 70 [2020-08-22 22:55:54,113 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:55:57,490 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:55:59,330 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:56:01,168 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 22:56:03,022 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:56:06,433 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:56:08,318 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:56:11,730 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:56:15,186 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:56:17,025 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 313 DAG size of output: 71 [2020-08-22 22:56:18,792 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 315 DAG size of output: 70 [2020-08-22 22:56:20,488 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 312 DAG size of output: 66 [2020-08-22 22:56:24,143 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:56:25,929 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 323 DAG size of output: 66 [2020-08-22 22:56:28,151 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 311 DAG size of output: 77 [2020-08-22 22:56:29,950 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 320 DAG size of output: 67 [2020-08-22 22:56:32,000 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 314 DAG size of output: 73 [2020-08-22 22:56:33,825 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 341 DAG size of output: 64 [2020-08-22 22:56:35,876 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 321 DAG size of output: 80 [2020-08-22 22:56:39,441 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:56:41,596 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 359 DAG size of output: 77 [2020-08-22 22:56:43,548 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 336 DAG size of output: 61 [2020-08-22 22:56:45,576 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 322 DAG size of output: 79 [2020-08-22 22:56:47,711 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 360 DAG size of output: 71 [2020-08-22 22:56:49,410 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 302 DAG size of output: 62 [2020-08-22 22:56:51,156 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 318 DAG size of output: 66 [2020-08-22 22:56:54,798 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:56:58,440 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:02,111 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:05,767 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:07,596 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 323 DAG size of output: 63 [2020-08-22 22:57:11,275 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:12,759 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 312 DAG size of output: 62 [2020-08-22 22:57:14,796 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 330 DAG size of output: 65 [2020-08-22 22:57:16,830 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 340 DAG size of output: 64 [2020-08-22 22:57:20,518 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:22,522 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 315 DAG size of output: 71 [2020-08-22 22:57:26,201 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:29,898 WARN L193 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:31,703 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 316 DAG size of output: 63 [2020-08-22 22:57:35,404 WARN L193 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:37,559 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 310 DAG size of output: 71 [2020-08-22 22:57:39,780 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2020-08-22 22:57:41,564 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 311 DAG size of output: 70 [2020-08-22 22:57:45,349 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:47,388 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 336 DAG size of output: 61 [2020-08-22 22:57:49,138 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 298 DAG size of output: 62 [2020-08-22 22:57:52,949 WARN L193 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:57:55,417 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 370 DAG size of output: 77 [2020-08-22 22:57:57,564 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 322 DAG size of output: 79 [2020-08-22 22:57:59,395 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 325 DAG size of output: 62 [2020-08-22 22:58:01,152 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 316 DAG size of output: 66 [2020-08-22 22:58:03,157 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 319 DAG size of output: 76 [2020-08-22 22:58:04,855 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 289 DAG size of output: 51 [2020-08-22 22:58:06,865 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:58:10,474 WARN L193 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:14,025 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:16,042 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:58:18,051 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 336 DAG size of output: 62 [2020-08-22 22:58:19,901 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 322 DAG size of output: 66 [2020-08-22 22:58:21,829 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 308 DAG size of output: 60 [2020-08-22 22:58:23,834 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 312 DAG size of output: 73 [2020-08-22 22:58:25,705 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 316 DAG size of output: 73 [2020-08-22 22:58:27,882 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 316 DAG size of output: 76 [2020-08-22 22:58:29,777 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 323 DAG size of output: 75 [2020-08-22 22:58:33,362 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:36,997 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:39,072 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:58:41,117 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:58:43,139 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:58:46,785 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:48,801 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 22:58:50,779 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 22:58:54,432 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:58:56,441 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:59:00,127 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:59:03,785 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:59:05,730 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 22:59:09,667 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:59:11,839 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 316 DAG size of output: 76 [2020-08-22 22:59:15,782 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 22:59:19,420 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:59:23,026 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:59:26,762 WARN L193 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 22:59:28,783 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 22:59:30,664 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 312 DAG size of output: 62 [2020-08-22 22:59:32,623 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2020-08-22 22:59:34,293 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 300 DAG size of output: 62 [2020-08-22 22:59:36,363 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 319 DAG size of output: 76 [2020-08-22 22:59:38,840 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 363 DAG size of output: 67 [2020-08-22 22:59:40,815 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 313 DAG size of output: 67 [2020-08-22 22:59:42,949 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 321 DAG size of output: 66 [2020-08-22 22:59:44,935 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 316 DAG size of output: 67 [2020-08-22 22:59:47,592 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 313 DAG size of output: 79 [2020-08-22 22:59:49,675 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 342 DAG size of output: 62 [2020-08-22 22:59:51,833 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 312 DAG size of output: 71 [2020-08-22 22:59:53,856 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 314 DAG size of output: 71 [2020-08-22 22:59:56,155 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 313 DAG size of output: 82 [2020-08-22 22:59:58,310 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 313 DAG size of output: 70 [2020-08-22 23:00:02,361 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 23:00:04,615 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 337 DAG size of output: 63 [2020-08-22 23:00:08,673 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 23:00:11,804 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 387 DAG size of output: 70 [2020-08-22 23:00:14,362 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 361 DAG size of output: 67 [2020-08-22 23:00:16,244 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 317 DAG size of output: 60 [2020-08-22 23:00:20,334 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 23:00:22,923 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 322 DAG size of output: 80 [2020-08-22 23:00:26,775 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 23:00:28,775 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 309 DAG size of output: 59 [2020-08-22 23:00:32,618 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2020-08-22 23:00:34,736 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 310 DAG size of output: 62 [2020-08-22 23:00:37,098 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 317 DAG size of output: 80 [2020-08-22 23:00:39,120 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 318 DAG size of output: 66 [2020-08-22 23:00:41,287 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 321 DAG size of output: 70 [2020-08-22 23:00:42,966 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 305 DAG size of output: 64 [2020-08-22 23:00:47,122 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 526 DAG size of output: 71 [2020-08-22 23:00:49,858 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 374 DAG size of output: 71 [2020-08-22 23:00:52,018 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 341 DAG size of output: 64 [2020-08-22 23:00:54,509 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 361 DAG size of output: 67 [2020-08-22 23:00:57,071 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 323 DAG size of output: 80 [2020-08-22 23:00:59,075 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 329 DAG size of output: 70 [2020-08-22 23:01:01,086 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 310 DAG size of output: 65 [2020-08-22 23:01:03,245 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 309 DAG size of output: 59