/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:38:59,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:38:59,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:38:59,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 08:38:59,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:38:59,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:38:59,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:38:59,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:38:59,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:38:59,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:38:59,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:38:59,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:38:59,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:38:59,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:38:59,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:38:59,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:38:59,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:38:59,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:38:59,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:38:59,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:38:59,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:38:59,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:38:59,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:38:59,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:38:59,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:38:59,251 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:38:59,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:38:59,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:38:59,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:38:59,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:38:59,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:38:59,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:38:59,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:38:59,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:38:59,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:38:59,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:38:59,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:38:59,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:38:59,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:38:59,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:38:59,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:38:59,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:38:59,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:38:59,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:38:59,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:38:59,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:38:59,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:38:59,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:38:59,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:38:59,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:38:59,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:38:59,704 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:38:59,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:38:59,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2b663c6/4e9023e538e1468ba8d3e65411756f1c/FLAGbb054291e [2020-12-22 08:39:00,566 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:39:00,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:39:00,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2b663c6/4e9023e538e1468ba8d3e65411756f1c/FLAGbb054291e [2020-12-22 08:39:00,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2b663c6/4e9023e538e1468ba8d3e65411756f1c [2020-12-22 08:39:00,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:39:00,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:39:00,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:39:00,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:39:00,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:39:00,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:39:00" (1/1) ... [2020-12-22 08:39:00,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2d1d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:00, skipping insertion in model container [2020-12-22 08:39:00,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:39:00" (1/1) ... [2020-12-22 08:39:00,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:39:00,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:39:01,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[3701,3714] [2020-12-22 08:39:01,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:39:01,203 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:39:01,245 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[3701,3714] [2020-12-22 08:39:01,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:39:01,287 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:39:01,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01 WrapperNode [2020-12-22 08:39:01,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:39:01,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:39:01,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:39:01,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:39:01,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:39:01,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:39:01,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:39:01,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:39:01,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (1/1) ... [2020-12-22 08:39:01,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:39:01,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:39:01,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:39:01,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:39:01,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (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 [2020-12-22 08:39:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:39:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:39:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:39:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:39:02,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:39:02,409 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:39:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:39:02 BoogieIcfgContainer [2020-12-22 08:39:02,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:39:02,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:39:02,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:39:02,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:39:02,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:39:00" (1/3) ... [2020-12-22 08:39:02,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41137f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:39:02, skipping insertion in model container [2020-12-22 08:39:02,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:39:01" (2/3) ... [2020-12-22 08:39:02,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41137f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:39:02, skipping insertion in model container [2020-12-22 08:39:02,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:39:02" (3/3) ... [2020-12-22 08:39:02,433 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:39:02,443 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:39:02,450 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:39:02,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:39:02,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:39:02,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:39:02,531 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:39:02,531 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:39:02,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:39:02,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:39:02,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:39:02,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:39:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-12-22 08:39:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 08:39:02,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:02,572 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] [2020-12-22 08:39:02,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:02,581 INFO L82 PathProgramCache]: Analyzing trace with hash -976687966, now seen corresponding path program 1 times [2020-12-22 08:39:02,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:02,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227590556] [2020-12-22 08:39:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:02,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227590556] [2020-12-22 08:39:02,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:02,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:02,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581683222] [2020-12-22 08:39:02,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:02,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:02,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:02,934 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-12-22 08:39:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:03,008 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2020-12-22 08:39:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:03,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 08:39:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:03,023 INFO L225 Difference]: With dead ends: 146 [2020-12-22 08:39:03,023 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 08:39:03,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 08:39:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-12-22 08:39:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 08:39:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2020-12-22 08:39:03,082 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2020-12-22 08:39:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:03,083 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2020-12-22 08:39:03,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2020-12-22 08:39:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 08:39:03,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:03,085 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] [2020-12-22 08:39:03,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:39:03,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1572742836, now seen corresponding path program 1 times [2020-12-22 08:39:03,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:03,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116177117] [2020-12-22 08:39:03,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:03,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116177117] [2020-12-22 08:39:03,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:03,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:03,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713512801] [2020-12-22 08:39:03,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:03,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:03,331 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand 3 states. [2020-12-22 08:39:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:03,393 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2020-12-22 08:39:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:03,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 08:39:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:03,398 INFO L225 Difference]: With dead ends: 225 [2020-12-22 08:39:03,398 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 08:39:03,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 08:39:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-12-22 08:39:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 08:39:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2020-12-22 08:39:03,450 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2020-12-22 08:39:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:03,451 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2020-12-22 08:39:03,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2020-12-22 08:39:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 08:39:03,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:03,453 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] [2020-12-22 08:39:03,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:39:03,453 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:03,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1624580866, now seen corresponding path program 1 times [2020-12-22 08:39:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:03,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597051977] [2020-12-22 08:39:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:03,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597051977] [2020-12-22 08:39:03,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:03,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:39:03,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236409285] [2020-12-22 08:39:03,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:03,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:03,574 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand 5 states. [2020-12-22 08:39:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:03,765 INFO L93 Difference]: Finished difference Result 279 states and 429 transitions. [2020-12-22 08:39:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:03,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 08:39:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:03,770 INFO L225 Difference]: With dead ends: 279 [2020-12-22 08:39:03,772 INFO L226 Difference]: Without dead ends: 149 [2020-12-22 08:39:03,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:39:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-22 08:39:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-22 08:39:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 08:39:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 220 transitions. [2020-12-22 08:39:03,855 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 220 transitions. Word has length 39 [2020-12-22 08:39:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:03,856 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 220 transitions. [2020-12-22 08:39:03,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 220 transitions. [2020-12-22 08:39:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 08:39:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:03,865 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] [2020-12-22 08:39:03,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:39:03,866 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1223356835, now seen corresponding path program 1 times [2020-12-22 08:39:03,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:03,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989797740] [2020-12-22 08:39:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:04,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989797740] [2020-12-22 08:39:04,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:04,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:39:04,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235166120] [2020-12-22 08:39:04,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:04,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:04,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:04,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:04,010 INFO L87 Difference]: Start difference. First operand 149 states and 220 transitions. Second operand 5 states. [2020-12-22 08:39:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:04,101 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-12-22 08:39:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:04,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 08:39:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:04,104 INFO L225 Difference]: With dead ends: 279 [2020-12-22 08:39:04,104 INFO L226 Difference]: Without dead ends: 149 [2020-12-22 08:39:04,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:39:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-22 08:39:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-22 08:39:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 08:39:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 218 transitions. [2020-12-22 08:39:04,128 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 218 transitions. Word has length 39 [2020-12-22 08:39:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:04,128 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 218 transitions. [2020-12-22 08:39:04,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 218 transitions. [2020-12-22 08:39:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 08:39:04,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:04,130 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] [2020-12-22 08:39:04,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:39:04,131 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash -618673698, now seen corresponding path program 1 times [2020-12-22 08:39:04,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:04,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709520879] [2020-12-22 08:39:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:04,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709520879] [2020-12-22 08:39:04,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:04,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:04,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775557920] [2020-12-22 08:39:04,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:04,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:04,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:04,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:04,255 INFO L87 Difference]: Start difference. First operand 149 states and 218 transitions. Second operand 5 states. [2020-12-22 08:39:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:04,355 INFO L93 Difference]: Finished difference Result 669 states and 1014 transitions. [2020-12-22 08:39:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:04,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 08:39:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:04,360 INFO L225 Difference]: With dead ends: 669 [2020-12-22 08:39:04,360 INFO L226 Difference]: Without dead ends: 539 [2020-12-22 08:39:04,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-22 08:39:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 277. [2020-12-22 08:39:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-22 08:39:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 408 transitions. [2020-12-22 08:39:04,398 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 408 transitions. Word has length 39 [2020-12-22 08:39:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:04,399 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 408 transitions. [2020-12-22 08:39:04,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 408 transitions. [2020-12-22 08:39:04,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 08:39:04,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:04,400 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] [2020-12-22 08:39:04,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:39:04,401 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:04,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1533207258, now seen corresponding path program 1 times [2020-12-22 08:39:04,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:04,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562664181] [2020-12-22 08:39:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562664181] [2020-12-22 08:39:04,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:04,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621472251] [2020-12-22 08:39:04,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:04,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:04,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:04,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:04,466 INFO L87 Difference]: Start difference. First operand 277 states and 408 transitions. Second operand 3 states. [2020-12-22 08:39:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:04,540 INFO L93 Difference]: Finished difference Result 749 states and 1110 transitions. [2020-12-22 08:39:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:04,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 08:39:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:04,558 INFO L225 Difference]: With dead ends: 749 [2020-12-22 08:39:04,559 INFO L226 Difference]: Without dead ends: 491 [2020-12-22 08:39:04,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-12-22 08:39:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2020-12-22 08:39:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-12-22 08:39:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 692 transitions. [2020-12-22 08:39:04,611 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 692 transitions. Word has length 41 [2020-12-22 08:39:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:04,612 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 692 transitions. [2020-12-22 08:39:04,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 692 transitions. [2020-12-22 08:39:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 08:39:04,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:04,614 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] [2020-12-22 08:39:04,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:39:04,614 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1554209913, now seen corresponding path program 1 times [2020-12-22 08:39:04,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:04,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865037604] [2020-12-22 08:39:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:04,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865037604] [2020-12-22 08:39:04,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:04,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:04,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074469538] [2020-12-22 08:39:04,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:04,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:04,769 INFO L87 Difference]: Start difference. First operand 481 states and 692 transitions. Second operand 5 states. [2020-12-22 08:39:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:04,922 INFO L93 Difference]: Finished difference Result 1305 states and 1906 transitions. [2020-12-22 08:39:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:04,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 08:39:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:04,928 INFO L225 Difference]: With dead ends: 1305 [2020-12-22 08:39:04,929 INFO L226 Difference]: Without dead ends: 843 [2020-12-22 08:39:04,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-12-22 08:39:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 481. [2020-12-22 08:39:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-12-22 08:39:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 684 transitions. [2020-12-22 08:39:04,997 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 684 transitions. Word has length 41 [2020-12-22 08:39:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:04,997 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 684 transitions. [2020-12-22 08:39:04,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 684 transitions. [2020-12-22 08:39:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 08:39:04,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:04,999 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] [2020-12-22 08:39:04,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:39:04,999 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:05,000 INFO L82 PathProgramCache]: Analyzing trace with hash 933957624, now seen corresponding path program 1 times [2020-12-22 08:39:05,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:05,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185344022] [2020-12-22 08:39:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:05,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185344022] [2020-12-22 08:39:05,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:05,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:05,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992191052] [2020-12-22 08:39:05,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:05,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:05,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:05,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:05,110 INFO L87 Difference]: Start difference. First operand 481 states and 684 transitions. Second operand 5 states. [2020-12-22 08:39:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:05,269 INFO L93 Difference]: Finished difference Result 816 states and 1163 transitions. [2020-12-22 08:39:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:39:05,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 08:39:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:05,275 INFO L225 Difference]: With dead ends: 816 [2020-12-22 08:39:05,275 INFO L226 Difference]: Without dead ends: 814 [2020-12-22 08:39:05,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:39:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-12-22 08:39:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 497. [2020-12-22 08:39:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:39:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 696 transitions. [2020-12-22 08:39:05,349 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 696 transitions. Word has length 42 [2020-12-22 08:39:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:05,349 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 696 transitions. [2020-12-22 08:39:05,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 696 transitions. [2020-12-22 08:39:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 08:39:05,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:05,351 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] [2020-12-22 08:39:05,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:39:05,351 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:05,352 INFO L82 PathProgramCache]: Analyzing trace with hash 883353381, now seen corresponding path program 1 times [2020-12-22 08:39:05,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:05,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217028318] [2020-12-22 08:39:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:05,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217028318] [2020-12-22 08:39:05,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:05,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:05,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823827628] [2020-12-22 08:39:05,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:05,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:05,394 INFO L87 Difference]: Start difference. First operand 497 states and 696 transitions. Second operand 3 states. [2020-12-22 08:39:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:05,499 INFO L93 Difference]: Finished difference Result 968 states and 1382 transitions. [2020-12-22 08:39:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:05,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 08:39:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:05,504 INFO L225 Difference]: With dead ends: 968 [2020-12-22 08:39:05,504 INFO L226 Difference]: Without dead ends: 693 [2020-12-22 08:39:05,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-12-22 08:39:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-12-22 08:39:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-12-22 08:39:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 970 transitions. [2020-12-22 08:39:05,599 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 970 transitions. Word has length 42 [2020-12-22 08:39:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:05,599 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 970 transitions. [2020-12-22 08:39:05,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 970 transitions. [2020-12-22 08:39:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:39:05,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:05,601 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:05,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:39:05,601 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:05,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1515661308, now seen corresponding path program 1 times [2020-12-22 08:39:05,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:05,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77990567] [2020-12-22 08:39:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 08:39:05,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77990567] [2020-12-22 08:39:05,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:05,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:05,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104222764] [2020-12-22 08:39:05,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:05,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:05,710 INFO L87 Difference]: Start difference. First operand 691 states and 970 transitions. Second operand 5 states. [2020-12-22 08:39:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:06,022 INFO L93 Difference]: Finished difference Result 2835 states and 4000 transitions. [2020-12-22 08:39:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:06,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:39:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:06,040 INFO L225 Difference]: With dead ends: 2835 [2020-12-22 08:39:06,040 INFO L226 Difference]: Without dead ends: 2165 [2020-12-22 08:39:06,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-12-22 08:39:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1359. [2020-12-22 08:39:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-12-22 08:39:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1906 transitions. [2020-12-22 08:39:06,276 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1906 transitions. Word has length 61 [2020-12-22 08:39:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:06,277 INFO L481 AbstractCegarLoop]: Abstraction has 1359 states and 1906 transitions. [2020-12-22 08:39:06,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1906 transitions. [2020-12-22 08:39:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:39:06,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:06,278 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:06,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:39:06,279 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:06,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1625359882, now seen corresponding path program 1 times [2020-12-22 08:39:06,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:06,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960751042] [2020-12-22 08:39:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 08:39:06,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960751042] [2020-12-22 08:39:06,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:06,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:06,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134642123] [2020-12-22 08:39:06,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:06,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:06,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:06,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:06,367 INFO L87 Difference]: Start difference. First operand 1359 states and 1906 transitions. Second operand 5 states. [2020-12-22 08:39:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:06,797 INFO L93 Difference]: Finished difference Result 3503 states and 4936 transitions. [2020-12-22 08:39:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:06,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:39:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:06,814 INFO L225 Difference]: With dead ends: 3503 [2020-12-22 08:39:06,814 INFO L226 Difference]: Without dead ends: 2833 [2020-12-22 08:39:06,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-12-22 08:39:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2363. [2020-12-22 08:39:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 08:39:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3300 transitions. [2020-12-22 08:39:07,138 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3300 transitions. Word has length 61 [2020-12-22 08:39:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:07,139 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3300 transitions. [2020-12-22 08:39:07,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3300 transitions. [2020-12-22 08:39:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:39:07,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:07,141 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:07,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:39:07,141 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:07,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2114297975, now seen corresponding path program 1 times [2020-12-22 08:39:07,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:07,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364206054] [2020-12-22 08:39:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:39:07,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364206054] [2020-12-22 08:39:07,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:07,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:39:07,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127547126] [2020-12-22 08:39:07,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:39:07,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:39:07,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:07,228 INFO L87 Difference]: Start difference. First operand 2363 states and 3300 transitions. Second operand 5 states. [2020-12-22 08:39:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:07,736 INFO L93 Difference]: Finished difference Result 3967 states and 5596 transitions. [2020-12-22 08:39:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:39:07,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 08:39:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:07,757 INFO L225 Difference]: With dead ends: 3967 [2020-12-22 08:39:07,758 INFO L226 Difference]: Without dead ends: 3501 [2020-12-22 08:39:07,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:39:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-12-22 08:39:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2827. [2020-12-22 08:39:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-12-22 08:39:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3964 transitions. [2020-12-22 08:39:08,155 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3964 transitions. Word has length 62 [2020-12-22 08:39:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:08,155 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 3964 transitions. [2020-12-22 08:39:08,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:39:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3964 transitions. [2020-12-22 08:39:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:39:08,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:08,157 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:08,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:39:08,157 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash -344216809, now seen corresponding path program 1 times [2020-12-22 08:39:08,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:08,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178562890] [2020-12-22 08:39:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:08,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178562890] [2020-12-22 08:39:08,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:08,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:08,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692990653] [2020-12-22 08:39:08,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:08,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:08,236 INFO L87 Difference]: Start difference. First operand 2827 states and 3964 transitions. Second operand 3 states. [2020-12-22 08:39:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:08,521 INFO L93 Difference]: Finished difference Result 4945 states and 6985 transitions. [2020-12-22 08:39:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:08,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:39:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:08,532 INFO L225 Difference]: With dead ends: 4945 [2020-12-22 08:39:08,533 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 08:39:08,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 08:39:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2020-12-22 08:39:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-12-22 08:39:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3004 transitions. [2020-12-22 08:39:08,785 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3004 transitions. Word has length 63 [2020-12-22 08:39:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:08,785 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3004 transitions. [2020-12-22 08:39:08,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3004 transitions. [2020-12-22 08:39:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:39:08,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:08,787 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:08,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:39:08,787 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:08,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2058333971, now seen corresponding path program 1 times [2020-12-22 08:39:08,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:08,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833690116] [2020-12-22 08:39:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:09,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833690116] [2020-12-22 08:39:09,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838321857] [2020-12-22 08:39:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:39:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:09,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 08:39:09,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:39:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:39:09,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:39:09,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 08:39:09,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717820988] [2020-12-22 08:39:09,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:39:09,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:09,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:39:09,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:39:09,485 INFO L87 Difference]: Start difference. First operand 2137 states and 3004 transitions. Second operand 12 states. [2020-12-22 08:39:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:14,721 INFO L93 Difference]: Finished difference Result 15059 states and 20728 transitions. [2020-12-22 08:39:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-22 08:39:14,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-12-22 08:39:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:14,785 INFO L225 Difference]: With dead ends: 15059 [2020-12-22 08:39:14,785 INFO L226 Difference]: Without dead ends: 12957 [2020-12-22 08:39:14,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2020-12-22 08:39:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2020-12-22 08:39:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 6258. [2020-12-22 08:39:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6258 states. [2020-12-22 08:39:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 8401 transitions. [2020-12-22 08:39:15,950 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 8401 transitions. Word has length 63 [2020-12-22 08:39:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:15,951 INFO L481 AbstractCegarLoop]: Abstraction has 6258 states and 8401 transitions. [2020-12-22 08:39:15,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:39:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 8401 transitions. [2020-12-22 08:39:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:39:15,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:15,953 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:16,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 08:39:16,168 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:16,169 INFO L82 PathProgramCache]: Analyzing trace with hash 985811417, now seen corresponding path program 1 times [2020-12-22 08:39:16,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:16,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747000525] [2020-12-22 08:39:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747000525] [2020-12-22 08:39:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047455984] [2020-12-22 08:39:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:39:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:16,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 08:39:16,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:39:16,699 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 08:39:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:17,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:39:17,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 08:39:17,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212391649] [2020-12-22 08:39:17,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 08:39:17,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 08:39:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:39:17,034 INFO L87 Difference]: Start difference. First operand 6258 states and 8401 transitions. Second operand 17 states. [2020-12-22 08:39:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:22,176 INFO L93 Difference]: Finished difference Result 31762 states and 42589 transitions. [2020-12-22 08:39:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 08:39:22,177 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-12-22 08:39:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:22,251 INFO L225 Difference]: With dead ends: 31762 [2020-12-22 08:39:22,251 INFO L226 Difference]: Without dead ends: 26707 [2020-12-22 08:39:22,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:39:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26707 states. [2020-12-22 08:39:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26707 to 14128. [2020-12-22 08:39:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14128 states. [2020-12-22 08:39:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14128 states to 14128 states and 18941 transitions. [2020-12-22 08:39:24,261 INFO L78 Accepts]: Start accepts. Automaton has 14128 states and 18941 transitions. Word has length 64 [2020-12-22 08:39:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 14128 states and 18941 transitions. [2020-12-22 08:39:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 08:39:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14128 states and 18941 transitions. [2020-12-22 08:39:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:39:24,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:24,263 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:24,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 08:39:24,479 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:24,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2139757523, now seen corresponding path program 1 times [2020-12-22 08:39:24,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:24,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687586364] [2020-12-22 08:39:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687586364] [2020-12-22 08:39:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876212003] [2020-12-22 08:39:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:39:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:24,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 08:39:24,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:39:25,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 08:39:25,256 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-12-22 08:39:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:25,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:39:25,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-22 08:39:25,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202144161] [2020-12-22 08:39:25,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:39:25,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:39:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:39:25,651 INFO L87 Difference]: Start difference. First operand 14128 states and 18941 transitions. Second operand 20 states. [2020-12-22 08:39:26,210 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:39:26,449 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:39:26,994 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:39:27,218 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:39:27,743 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:39:28,323 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:39:28,610 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:39:29,203 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:39:29,857 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-12-22 08:39:30,178 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-12-22 08:39:30,590 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-12-22 08:39:30,870 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:39:31,281 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-12-22 08:39:31,864 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:39:32,177 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:39:32,708 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:39:33,351 WARN L197 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-22 08:39:33,985 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:39:34,611 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-22 08:39:34,905 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-12-22 08:39:35,217 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:39:35,854 WARN L197 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:39:36,169 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:39:36,452 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:39:37,131 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-12-22 08:39:37,864 WARN L197 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-22 08:39:38,662 WARN L197 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-22 08:39:39,347 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:39:40,088 WARN L197 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:39:40,802 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:39:41,577 WARN L197 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:39:42,234 WARN L197 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:39:42,972 WARN L197 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:39:43,732 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:39:44,550 WARN L197 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-12-22 08:39:45,326 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:39:46,187 WARN L197 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:39:46,619 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:39:47,093 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-12-22 08:39:47,520 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:39:47,920 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:39:48,834 WARN L197 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:39:49,232 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:39:49,564 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:39:50,015 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:39:50,787 WARN L197 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:39:51,464 WARN L197 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:39:52,143 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:39:52,769 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:39:53,176 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:39:53,563 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:39:54,302 WARN L197 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:39:55,025 WARN L197 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:39:55,633 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-22 08:39:56,227 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:39:56,695 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:39:57,162 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:39:58,185 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:39:59,168 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:39:59,964 WARN L197 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:40:00,795 WARN L197 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:40:01,847 WARN L197 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-22 08:40:02,771 WARN L197 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:40:04,187 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:40:04,613 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:40:05,285 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:40:05,895 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-22 08:40:06,968 WARN L197 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:40:07,462 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:40:08,398 WARN L197 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:40:08,948 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:40:09,414 WARN L197 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:40:09,941 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:40:10,361 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:40:11,663 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:40:12,773 WARN L197 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:40:13,811 WARN L197 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:40:15,028 WARN L197 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:40:16,095 WARN L197 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:40:16,977 WARN L197 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:40:17,601 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:40:18,538 WARN L197 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:40:19,044 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 08:40:19,979 WARN L197 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:40:20,389 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:40:21,265 WARN L197 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:40:22,139 WARN L197 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:40:22,601 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 08:40:23,682 WARN L197 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:40:24,133 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-22 08:40:25,379 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:40:25,853 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:40:27,110 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:40:28,242 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:40:28,809 WARN L197 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:40:30,145 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:40:30,749 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 08:40:32,480 WARN L197 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:40:33,139 WARN L197 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:40:33,925 WARN L197 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-22 08:40:35,361 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:40:36,117 WARN L197 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:40:37,608 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:40:38,318 WARN L197 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:40:39,281 WARN L197 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-12-22 08:40:40,026 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:40:40,841 WARN L197 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-12-22 08:40:42,397 WARN L197 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:40:43,136 WARN L197 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-22 08:40:43,579 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-22 08:40:44,482 WARN L197 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-22 08:40:44,879 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-22 08:40:45,874 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-22 08:40:46,298 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 08:40:47,600 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:40:48,354 WARN L197 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-22 08:40:49,736 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:40:50,107 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-22 08:40:50,483 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-22 08:40:51,856 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 08:40:53,711 WARN L197 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-12-22 08:40:55,329 WARN L197 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:40:56,287 WARN L197 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 08:40:57,963 WARN L197 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:40:59,636 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 08:41:01,555 WARN L197 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:41:02,522 WARN L197 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 08:41:04,599 WARN L197 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:41:05,105 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 08:41:06,328 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:41:08,337 WARN L197 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:41:08,906 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 08:41:09,804 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:41:12,227 WARN L197 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:41:13,826 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 08:41:15,850 WARN L197 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-12-22 08:41:16,913 WARN L197 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:41:19,364 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:41:20,487 WARN L197 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-12-22 08:41:22,833 WARN L197 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:41:23,919 WARN L197 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-22 08:41:25,156 WARN L197 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:41:26,511 WARN L197 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-12-22 08:41:27,868 WARN L197 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:41:28,416 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 08:41:29,568 WARN L197 SmtUtils]: Spent 953.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 08:41:30,564 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:41:31,621 WARN L197 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:41:32,882 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 127 [2020-12-22 08:41:35,192 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-22 08:41:36,064 WARN L197 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:41:37,151 WARN L197 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-22 08:41:38,187 WARN L197 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:41:39,517 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 124 [2020-12-22 08:41:40,458 WARN L197 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:41:41,447 WARN L197 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:41:42,013 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 08:41:42,852 WARN L197 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:41:44,050 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 08:41:44,882 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:41:45,896 WARN L197 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:41:48,345 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2020-12-22 08:41:49,621 WARN L197 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:41:51,617 WARN L197 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:41:52,354 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 08:41:53,449 WARN L197 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-12-22 08:41:54,346 WARN L197 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:41:55,864 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 122 [2020-12-22 08:41:57,979 WARN L197 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:41:59,139 WARN L197 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-12-22 08:42:00,165 WARN L197 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:42:01,239 WARN L197 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 08:42:02,421 WARN L197 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-22 08:42:04,747 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:42:05,307 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-22 08:42:06,182 WARN L197 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:42:07,258 WARN L197 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:42:09,329 WARN L197 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:42:11,453 WARN L197 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:42:12,602 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-12-22 08:42:13,686 WARN L197 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:42:15,640 WARN L197 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:42:17,854 WARN L197 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:42:20,163 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-22 08:42:22,584 WARN L197 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:42:24,126 WARN L197 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:42:26,255 WARN L197 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:42:28,118 WARN L197 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:42:30,321 WARN L197 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:42:32,152 WARN L197 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:42:33,331 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 08:42:35,682 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:42:37,835 WARN L197 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:42:40,337 WARN L197 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:42:42,959 WARN L197 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:42:45,349 WARN L197 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:42:48,102 WARN L197 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:42:50,345 WARN L197 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:42:52,821 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:42:55,147 WARN L197 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2020-12-22 08:42:56,378 WARN L197 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-12-22 08:42:57,386 WARN L197 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:42:58,807 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-12-22 08:43:00,418 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 08:43:01,744 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-12-22 08:43:03,256 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:43:06,042 WARN L197 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:43:09,039 WARN L197 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-22 08:43:11,773 WARN L197 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:43:14,459 WARN L197 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:43:15,748 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:43:17,031 WARN L197 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-22 08:43:18,010 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:43:19,055 WARN L197 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:43:20,324 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:43:23,266 WARN L197 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:43:25,091 WARN L197 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 97 DAG size of output: 89