/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:11:09,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:11:09,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:11:09,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:11:09,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:11:09,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:11:09,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:11:09,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:11:09,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:11:09,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:11:09,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:11:09,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:11:09,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:11:09,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:11:09,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:11:09,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:11:09,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:11:09,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:11:09,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:11:09,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:11:09,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:11:09,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:11:09,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:11:09,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:11:09,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:11:09,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:11:09,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:11:09,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:11:09,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:11:09,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:11:09,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:11:09,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:11:09,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:11:09,561 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:11:09,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:11:09,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:11:09,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:11:09,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:11:09,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:11:09,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:11:09,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:11:09,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:11:09,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:11:09,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:11:09,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:11:09,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:11:09,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:11:09,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:11:09,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:11:09,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:11:09,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:11:09,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:11:09,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:11:09,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:11:09,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:11:09,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:09,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:11:09,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:11:09,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:11:09,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:11:09,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:11:09,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:11:09,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:11:09,879 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:11:09,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-20 21:11:09,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced400777/6c93da9d9dd64560aa8ac1f46996f8e6/FLAGa28fa1efd [2020-07-20 21:11:10,367 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:11:10,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-20 21:11:10,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced400777/6c93da9d9dd64560aa8ac1f46996f8e6/FLAGa28fa1efd [2020-07-20 21:11:10,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced400777/6c93da9d9dd64560aa8ac1f46996f8e6 [2020-07-20 21:11:10,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:11:10,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:11:10,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:11:10,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:11:10,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:11:10,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:11:10" (1/1) ... [2020-07-20 21:11:10,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5914c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:10, skipping insertion in model container [2020-07-20 21:11:10,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:11:10" (1/1) ... [2020-07-20 21:11:10,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:11:10,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:11:11,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:11:11,013 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:11:11,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:11:11,045 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:11:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11 WrapperNode [2020-07-20 21:11:11,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:11:11,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:11:11,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:11:11,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:11:11,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (1/1) ... [2020-07-20 21:11:11,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:11:11,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:11:11,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:11:11,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:11:11,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (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 [2020-07-20 21:11:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:11:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:11:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-20 21:11:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:11:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:11:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:11:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-20 21:11:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:11:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:11:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:11:11,438 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:11:11,438 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:11:11,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:11:11 BoogieIcfgContainer [2020-07-20 21:11:11,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:11:11,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:11:11,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:11:11,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:11:11,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:11:10" (1/3) ... [2020-07-20 21:11:11,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c50f3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:11:11, skipping insertion in model container [2020-07-20 21:11:11,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:11:11" (2/3) ... [2020-07-20 21:11:11,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c50f3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:11:11, skipping insertion in model container [2020-07-20 21:11:11,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:11:11" (3/3) ... [2020-07-20 21:11:11,472 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-20 21:11:11,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:11:11,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:11:11,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:11:11,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:11:11,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:11:11,548 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:11:11,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:11:11,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:11:11,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:11:11,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:11:11,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:11:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-20 21:11:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 21:11:11,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:11,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:11,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-07-20 21:11:11,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:11,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172664621] [2020-07-20 21:11:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:11,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:11:11,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:11,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:11:11,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 21:11:11,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:11:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 21:11:11,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172664621] [2020-07-20 21:11:11,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:11:11,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 21:11:11,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901755988] [2020-07-20 21:11:11,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 21:11:11,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:11:11,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 21:11:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:11:11,880 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-20 21:11:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:11:12,007 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-07-20 21:11:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:11:12,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 21:11:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:11:12,020 INFO L225 Difference]: With dead ends: 41 [2020-07-20 21:11:12,020 INFO L226 Difference]: Without dead ends: 25 [2020-07-20 21:11:12,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:11:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-20 21:11:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-20 21:11:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 21:11:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-07-20 21:11:12,073 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2020-07-20 21:11:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:11:12,074 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-07-20 21:11:12,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 21:11:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-07-20 21:11:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 21:11:12,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:12,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:12,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:12,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-07-20 21:11:12,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:12,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701158264] [2020-07-20 21:11:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:12,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:11:12,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:12,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:11:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 21:11:12,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:11:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701158264] [2020-07-20 21:11:12,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:11:12,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:11:12,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936949925] [2020-07-20 21:11:12,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:11:12,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:11:12,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:11:12,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:11:12,380 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 5 states. [2020-07-20 21:11:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:11:12,459 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-20 21:11:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:11:12,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 21:11:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:11:12,461 INFO L225 Difference]: With dead ends: 29 [2020-07-20 21:11:12,462 INFO L226 Difference]: Without dead ends: 25 [2020-07-20 21:11:12,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:11:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-20 21:11:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-20 21:11:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 21:11:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-07-20 21:11:12,471 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2020-07-20 21:11:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:11:12,472 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-07-20 21:11:12,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:11:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-07-20 21:11:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 21:11:12,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:12,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:12,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:12,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:12,691 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-07-20 21:11:12,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:12,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500590470] [2020-07-20 21:11:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:12,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:11:12,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:12,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-20 21:11:12,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-20 21:11:12,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:11:13,103 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:11:13,109 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-20 21:11:13,272 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,273 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:13,276 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:13,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,279 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:13,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:13,281 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:13,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,594 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-20 21:11:13,597 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,599 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,601 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,602 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:13,603 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,605 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:13,607 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:11:13,610 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:13,612 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:13,613 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:13,615 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:11:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 21:11:13,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500590470] [2020-07-20 21:11:13,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:11:13,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 22 [2020-07-20 21:11:13,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926202090] [2020-07-20 21:11:13,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 21:11:13,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:11:13,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 21:11:13,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-07-20 21:11:13,672 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 22 states. [2020-07-20 21:11:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:11:14,060 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-20 21:11:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 21:11:14,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2020-07-20 21:11:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:11:14,062 INFO L225 Difference]: With dead ends: 40 [2020-07-20 21:11:14,062 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 21:11:14,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-07-20 21:11:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 21:11:14,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-07-20 21:11:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 21:11:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-20 21:11:14,075 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 37 [2020-07-20 21:11:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:11:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-20 21:11:14,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 21:11:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-07-20 21:11:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 21:11:14,078 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:14,078 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:14,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:14,292 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 1 times [2020-07-20 21:11:14,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:14,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353429011] [2020-07-20 21:11:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:14,333 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:11:14,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:14,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:11:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 21:11:14,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:11:14,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:14,462 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-20 21:11:14,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353429011] [2020-07-20 21:11:14,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:11:14,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-20 21:11:14,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973875655] [2020-07-20 21:11:14,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:11:14,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:11:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:11:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:11:14,509 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 8 states. [2020-07-20 21:11:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:11:14,588 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-07-20 21:11:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:11:14,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-07-20 21:11:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:11:14,590 INFO L225 Difference]: With dead ends: 39 [2020-07-20 21:11:14,590 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 21:11:14,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 21:11:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 21:11:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 21:11:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 21:11:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2020-07-20 21:11:14,601 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 43 [2020-07-20 21:11:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:11:14,602 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2020-07-20 21:11:14,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:11:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2020-07-20 21:11:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 21:11:14,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:14,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:14,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:14,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:14,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-07-20 21:11:14,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:14,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432933654] [2020-07-20 21:11:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:14,863 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:11:14,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:14,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-20 21:11:14,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-20 21:11:15,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:11:15,334 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:15,520 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:15,521 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:15,522 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:15,523 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:11:15,646 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:15,647 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:15,648 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:15,649 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:11:16,013 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:16,014 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:16,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:16,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:16,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:16,018 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:11:16,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:16,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:16,024 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:11:18,075 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) .cse0 (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (let ((.cse2 (div .cse1 (- 2)))) (or (<= 3 (div (+ .cse1 (- 1)) (- 2))) (< .cse2 1) (< .cse2 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 2)) 1)))))) (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div .cse3 (- 2)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)))))) is different from false [2020-07-20 21:11:20,102 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) (forall ((v_prenex_2 Int)) (let ((.cse1 (* v_prenex_2 (- 1)))) (or (< (div .cse1 (- 2)) 1) (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3) (<= 3 (div (+ .cse1 (- 1)) (- 2)))))) .cse0 (forall ((v_prenex_1 Int)) (let ((.cse3 (* v_prenex_1 (- 1)))) (let ((.cse2 (div .cse3 (- 2)))) (or (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 2)) 1)) (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 2))))))))) is different from false [2020-07-20 21:11:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 8 not checked. [2020-07-20 21:11:20,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432933654] [2020-07-20 21:11:20,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:11:20,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2020-07-20 21:11:20,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719750841] [2020-07-20 21:11:20,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-20 21:11:20,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:11:20,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-20 21:11:20,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=948, Unknown=2, NotChecked=126, Total=1190 [2020-07-20 21:11:20,184 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand 35 states. [2020-07-20 21:12:01,184 WARN L193 SmtUtils]: Spent 40.76 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-20 21:12:06,114 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-20 21:12:06,525 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2020-07-20 21:12:07,126 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:12:07,523 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:12:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:12:11,536 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-07-20 21:12:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 21:12:11,536 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 44 [2020-07-20 21:12:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:12:11,539 INFO L225 Difference]: With dead ends: 62 [2020-07-20 21:12:11,539 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 21:12:11,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=207, Invalid=1691, Unknown=2, NotChecked=170, Total=2070 [2020-07-20 21:12:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 21:12:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-07-20 21:12:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 21:12:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 66 transitions. [2020-07-20 21:12:11,555 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 66 transitions. Word has length 44 [2020-07-20 21:12:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:12:11,555 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 66 transitions. [2020-07-20 21:12:11,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-20 21:12:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 66 transitions. [2020-07-20 21:12:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 21:12:11,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:12:11,558 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:12:11,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:11,759 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:12:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:12:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash -58046165, now seen corresponding path program 2 times [2020-07-20 21:12:11,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:12:11,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643949717] [2020-07-20 21:12:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:11,798 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:12:11,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:12:11,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:12:11,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:12:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-20 21:12:11,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:12:11,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643949717] [2020-07-20 21:12:11,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:12:11,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:12:11,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512102826] [2020-07-20 21:12:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:12:11,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:12:11,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:12:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:12:11,867 INFO L87 Difference]: Start difference. First operand 44 states and 66 transitions. Second operand 5 states. [2020-07-20 21:12:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:12:12,155 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-07-20 21:12:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:12:12,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-07-20 21:12:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:12:12,164 INFO L225 Difference]: With dead ends: 72 [2020-07-20 21:12:12,164 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 21:12:12,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:12:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 21:12:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 21:12:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 21:12:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2020-07-20 21:12:12,175 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 56 [2020-07-20 21:12:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:12:12,176 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2020-07-20 21:12:12,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:12:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-07-20 21:12:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 21:12:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:12:12,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:12:12,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:12,388 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:12:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:12:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 4 times [2020-07-20 21:12:12,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:12:12,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900149896] [2020-07-20 21:12:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:12,425 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:12:12,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:12:12,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-20 21:12:12,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:12:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-20 21:12:13,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:12:14,454 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:14,455 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:12:15,194 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:15,195 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:15,196 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:15,203 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:15,204 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:17,149 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-20 21:12:17,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:17,654 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:17,655 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:17,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 21:12:17,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900149896] [2020-07-20 21:12:17,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:12:17,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 32 [2020-07-20 21:12:17,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179781343] [2020-07-20 21:12:17,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-20 21:12:17,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:12:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-20 21:12:17,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2020-07-20 21:12:17,873 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand 32 states. [2020-07-20 21:12:20,515 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:12:20,890 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 21:12:23,621 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:12:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:12:23,857 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2020-07-20 21:12:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 21:12:23,866 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 44 [2020-07-20 21:12:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:12:23,869 INFO L225 Difference]: With dead ends: 78 [2020-07-20 21:12:23,869 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 21:12:23,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=346, Invalid=2204, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 21:12:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 21:12:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2020-07-20 21:12:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 21:12:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions. [2020-07-20 21:12:23,881 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 44 [2020-07-20 21:12:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:12:23,882 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 78 transitions. [2020-07-20 21:12:23,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-20 21:12:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions. [2020-07-20 21:12:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 21:12:23,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:12:23,885 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:12:24,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:24,090 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:12:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:12:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 5 times [2020-07-20 21:12:24,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:12:24,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075989146] [2020-07-20 21:12:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:24,144 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:12:24,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:12:24,162 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-20 21:12:24,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:12:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 21:12:25,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:12:26,924 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:12:27,242 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:28,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:28,295 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-20 21:12:29,111 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:12:29,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:29,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:29,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:29,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:29,711 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-20 21:12:30,667 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-20 21:12:31,039 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-20 21:12:32,256 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-20 21:12:32,785 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:12:33,487 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 21:12:33,488 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:33,489 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:33,490 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:33,916 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:33,917 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-20 21:12:33,918 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 116 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 21:12:34,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075989146] [2020-07-20 21:12:34,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:12:34,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 36 [2020-07-20 21:12:34,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132555567] [2020-07-20 21:12:34,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 21:12:34,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:12:34,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 21:12:34,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 21:12:34,621 INFO L87 Difference]: Start difference. First operand 51 states and 78 transitions. Second operand 36 states. [2020-07-20 21:12:35,673 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-07-20 21:12:35,948 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-07-20 21:12:36,222 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-07-20 21:12:36,693 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-20 21:12:37,149 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-20 21:12:37,647 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-20 21:12:40,325 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-07-20 21:12:40,900 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-07-20 21:12:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:12:42,104 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2020-07-20 21:12:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 21:12:42,113 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2020-07-20 21:12:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:12:42,115 INFO L225 Difference]: With dead ends: 78 [2020-07-20 21:12:42,116 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 21:12:42,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 79 SyntacticMatches, 16 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=351, Invalid=2511, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 21:12:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 21:12:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2020-07-20 21:12:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 21:12:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 87 transitions. [2020-07-20 21:12:42,127 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 87 transitions. Word has length 65 [2020-07-20 21:12:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:12:42,128 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 87 transitions. [2020-07-20 21:12:42,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 21:12:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 87 transitions. [2020-07-20 21:12:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:12:42,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:12:42,130 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:12:42,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:42,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:12:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:12:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash 53714530, now seen corresponding path program 3 times [2020-07-20 21:12:42,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:12:42,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682483677] [2020-07-20 21:12:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:42,399 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:12:42,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:12:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 21:12:42,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:12:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 21:12:42,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:12:44,097 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:44,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 21:12:44,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682483677] [2020-07-20 21:12:44,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:12:44,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 21:12:44,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974362682] [2020-07-20 21:12:44,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 21:12:44,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:12:44,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 21:12:44,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-20 21:12:44,423 INFO L87 Difference]: Start difference. First operand 56 states and 87 transitions. Second operand 12 states. [2020-07-20 21:12:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:12:44,930 INFO L93 Difference]: Finished difference Result 85 states and 127 transitions. [2020-07-20 21:12:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 21:12:44,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-07-20 21:12:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:12:44,939 INFO L225 Difference]: With dead ends: 85 [2020-07-20 21:12:44,940 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 21:12:44,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-07-20 21:12:44,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 21:12:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-07-20 21:12:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 21:12:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-07-20 21:12:44,952 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 57 [2020-07-20 21:12:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:12:44,952 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-07-20 21:12:44,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 21:12:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-07-20 21:12:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 21:12:44,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:12:44,953 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:12:45,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:45,155 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:12:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:12:45,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1602258660, now seen corresponding path program 6 times [2020-07-20 21:12:45,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:12:45,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958232624] [2020-07-20 21:12:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:12:45,229 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:12:45,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:12:45,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 93 conjunts are in the unsatisfiable core [2020-07-20 21:12:45,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:12:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 80 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-20 21:12:47,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:12:49,054 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:49,348 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-20 21:12:50,978 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:50,979 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:50,980 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:50,980 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:12:52,522 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:52,524 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:53,909 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:53,910 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:12:53,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:55,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:55,076 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:12:55,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:56,000 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:56,002 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:56,003 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:56,003 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:12:58,206 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 21:12:58,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:58,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:12:58,212 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:58,212 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:58,213 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:58,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:58,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:12:58,215 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:00,240 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_40 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_40 (- 1)))) (or (< (div .cse0 (- 5)) 1) (< (div (+ (* |c_mult_#res| (- 1)) .cse0 (- 1)) (- 5)) 3) (<= 3 (div (+ .cse0 (- 1)) (- 5)))))) .cse1 (forall ((v_mult_~n_BEFORE_CALL_40 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_40 (- 1)))) (let ((.cse2 (div .cse3 (- 5)))) (or (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 5))) (< .cse2 (+ (div (+ (* |c_mult_#res| (- 1)) .cse3) (- 5)) 1)))))) (or .cse1 (forall ((v_mult_~n_BEFORE_CALL_40 Int)) (< (div (+ (* |c_mult_#res| (- 1)) (* v_mult_~n_BEFORE_CALL_40 (- 1)) (- 1)) (- 5)) 3))))) is different from false [2020-07-20 21:13:02,290 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (< |c_mult_#in~m| 1))) (and (forall ((v_prenex_3 Int)) (let ((.cse1 (* v_prenex_3 (- 1)))) (let ((.cse0 (div .cse1 (- 5)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 5)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 5))) (< .cse0 1))))) (forall ((v_mult_~n_BEFORE_CALL_40 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_40 (- 1)))) (or (< (div .cse2 (- 5)) 1) (< (div (+ (* |c_mult_#res| (- 1)) .cse2 (- 1)) (- 5)) 3) (<= 3 (div (+ .cse2 (- 1)) (- 5)))))) .cse3 (or .cse3 (forall ((v_prenex_4 Int)) (< (div (+ (* v_prenex_4 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 5)) 3))))) is different from false [2020-07-20 21:13:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 5 proven. 123 refuted. 0 times theorem prover too weak. 28 trivial. 14 not checked. [2020-07-20 21:13:02,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958232624] [2020-07-20 21:13:02,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:13:02,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 50 [2020-07-20 21:13:02,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833693016] [2020-07-20 21:13:02,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-20 21:13:02,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:13:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-20 21:13:02,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2106, Unknown=2, NotChecked=186, Total=2450 [2020-07-20 21:13:02,643 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 50 states. [2020-07-20 21:13:03,561 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-20 21:13:05,795 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:13:06,281 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:13:10,093 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-07-20 21:13:10,547 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-20 21:13:10,965 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:13:11,417 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:13:11,863 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:13:13,016 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-20 21:13:13,550 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-20 21:13:15,384 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:15,747 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:13:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:13:15,900 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2020-07-20 21:13:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 21:13:15,909 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 65 [2020-07-20 21:13:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:13:15,910 INFO L225 Difference]: With dead ends: 82 [2020-07-20 21:13:15,910 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 21:13:15,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=514, Invalid=4748, Unknown=2, NotChecked=286, Total=5550 [2020-07-20 21:13:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 21:13:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-07-20 21:13:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 21:13:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 77 transitions. [2020-07-20 21:13:15,922 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 77 transitions. Word has length 65 [2020-07-20 21:13:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:13:15,922 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 77 transitions. [2020-07-20 21:13:15,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-20 21:13:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 77 transitions. [2020-07-20 21:13:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-20 21:13:15,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:13:15,924 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:13:16,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:13:16,126 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:13:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:13:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1124697265, now seen corresponding path program 7 times [2020-07-20 21:13:16,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:13:16,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739320390] [2020-07-20 21:13:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:13:16,183 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:13:16,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:13:16,186 WARN L261 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 105 conjunts are in the unsatisfiable core [2020-07-20 21:13:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:13:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 37 proven. 104 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-07-20 21:13:18,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:13:21,028 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:13:23,346 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:13:23,347 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:13:25,375 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:25,376 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:13:27,156 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:27,157 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:13:28,235 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:13:28,732 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:28,734 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:13:28,735 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:30,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:30,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:30,064 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:13:31,151 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:31,152 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:13:31,152 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:13:31,153 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,020 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:13:33,611 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 21:13:33,616 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,617 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,618 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:13:33,619 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:13:33,619 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,620 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,621 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,622 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:33,623 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:13:35,668 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or .cse0 (forall ((v_mult_~n_BEFORE_CALL_54 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_54 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) .cse0 (forall ((v_mult_~n_BEFORE_CALL_54 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_54 (- 1)))) (let ((.cse2 (div .cse1 (- 6)))) (or (<= 3 (div (+ .cse1 (- 1)) (- 6))) (< .cse2 1) (< .cse2 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 6)) 1)))))) (forall ((v_mult_~n_BEFORE_CALL_54 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_54 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 6))) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3) (< (div .cse3 (- 6)) 1)))))) is different from false [2020-07-20 21:13:37,712 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or .cse0 (forall ((v_mult_~n_BEFORE_CALL_54 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_54 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) (forall ((v_prenex_6 Int)) (let ((.cse1 (* v_prenex_6 (- 1)))) (or (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3) (< (div .cse1 (- 6)) 1) (<= 3 (div (+ .cse1 (- 1)) (- 6)))))) .cse0 (forall ((v_prenex_5 Int)) (let ((.cse3 (* v_prenex_5 (- 1)))) (let ((.cse2 (div .cse3 (- 6)))) (or (< .cse2 1) (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 6)) 1)) (<= 3 (div (+ .cse3 (- 1)) (- 6))))))))) is different from false [2020-07-20 21:13:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 165 refuted. 0 times theorem prover too weak. 36 trivial. 16 not checked. [2020-07-20 21:13:38,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739320390] [2020-07-20 21:13:38,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:13:38,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 55 [2020-07-20 21:13:38,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701514476] [2020-07-20 21:13:38,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-20 21:13:38,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:13:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-20 21:13:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2592, Unknown=2, NotChecked=206, Total=2970 [2020-07-20 21:13:38,098 INFO L87 Difference]: Start difference. First operand 55 states and 77 transitions. Second operand 55 states. [2020-07-20 21:14:21,979 WARN L193 SmtUtils]: Spent 43.19 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-20 21:14:26,510 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 37 DAG size of output: 11 [2020-07-20 21:14:29,874 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:14:30,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:14:36,924 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:14:38,110 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:14:38,808 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:14:40,456 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:14:42,007 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-20 21:14:42,959 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-20 21:14:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:14:44,550 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-07-20 21:14:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 21:14:44,562 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 72 [2020-07-20 21:14:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:14:44,563 INFO L225 Difference]: With dead ends: 82 [2020-07-20 21:14:44,563 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 21:14:44,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 69.9s TimeCoverageRelationStatistics Valid=540, Invalid=5317, Unknown=3, NotChecked=302, Total=6162 [2020-07-20 21:14:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 21:14:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-07-20 21:14:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:14:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 88 transitions. [2020-07-20 21:14:44,576 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 88 transitions. Word has length 72 [2020-07-20 21:14:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:14:44,577 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 88 transitions. [2020-07-20 21:14:44,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-20 21:14:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 88 transitions. [2020-07-20 21:14:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 21:14:44,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:14:44,578 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:14:44,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:14:44,793 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:14:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:14:44,794 INFO L82 PathProgramCache]: Analyzing trace with hash 921134702, now seen corresponding path program 8 times [2020-07-20 21:14:44,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:14:44,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393810437] [2020-07-20 21:14:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:14:44,854 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:14:44,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:14:44,857 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-20 21:14:44,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:14:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 79 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-20 21:14:46,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:14:47,325 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:47,721 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:14:48,123 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:14:48,289 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:14:48,531 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:14:49,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:49,609 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:49,997 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:14:50,408 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:14:50,952 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:51,531 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:51,692 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:14:51,937 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:14:52,506 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:52,506 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:52,507 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:53,146 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:53,318 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:14:53,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:53,732 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:53,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:54,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:55,488 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:55,874 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:14:57,120 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:57,720 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:59,243 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:14:59,248 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:59,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:14:59,258 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:14:59,258 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:14:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 23 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 21:14:59,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393810437] [2020-07-20 21:14:59,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:14:59,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26] total 36 [2020-07-20 21:14:59,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900645274] [2020-07-20 21:14:59,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 21:14:59,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:14:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 21:14:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 21:14:59,377 INFO L87 Difference]: Start difference. First operand 60 states and 88 transitions. Second operand 36 states. [2020-07-20 21:15:03,522 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:06,565 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:15:07,362 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:15:07,991 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:15:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:15:10,282 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2020-07-20 21:15:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 21:15:10,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2020-07-20 21:15:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:15:10,283 INFO L225 Difference]: With dead ends: 76 [2020-07-20 21:15:10,283 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 21:15:10,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=336, Invalid=2634, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 21:15:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 21:15:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2020-07-20 21:15:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:15:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2020-07-20 21:15:10,294 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 65 [2020-07-20 21:15:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:15:10,294 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2020-07-20 21:15:10,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 21:15:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2020-07-20 21:15:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 21:15:10,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:15:10,296 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:15:10,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:15:10,509 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:15:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:15:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 9 times [2020-07-20 21:15:10,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:15:10,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178896937] [2020-07-20 21:15:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:15:10,574 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:15:10,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:15:10,576 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-20 21:15:10,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:15:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-20 21:15:12,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:15:13,032 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:13,427 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:13,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:14,506 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:15,043 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:15,044 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:15,045 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:15,785 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:15,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:15,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:16,706 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:17,096 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:17,359 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:15:17,503 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:17,901 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:19,102 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:19,498 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:19,899 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:20,473 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:21,067 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:21,456 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:22,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,059 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,479 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:22,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:22,981 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-20 21:15:23,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178896937] [2020-07-20 21:15:23,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:15:23,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 31 [2020-07-20 21:15:23,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242433363] [2020-07-20 21:15:23,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 21:15:23,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:15:23,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 21:15:23,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-07-20 21:15:23,043 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand 31 states. [2020-07-20 21:15:27,967 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:28,986 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:15:29,518 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-20 21:15:30,060 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:15:31,453 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:15:32,095 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:15:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:15:32,942 INFO L93 Difference]: Finished difference Result 83 states and 115 transitions. [2020-07-20 21:15:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 21:15:32,954 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-07-20 21:15:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:15:32,956 INFO L225 Difference]: With dead ends: 83 [2020-07-20 21:15:32,956 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 21:15:32,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 21:15:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 21:15:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-07-20 21:15:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:15:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-07-20 21:15:32,966 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 65 [2020-07-20 21:15:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:15:32,967 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-07-20 21:15:32,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 21:15:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-07-20 21:15:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-20 21:15:32,968 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:15:32,968 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:15:33,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:15:33,172 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:15:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:15:33,172 INFO L82 PathProgramCache]: Analyzing trace with hash -180332919, now seen corresponding path program 10 times [2020-07-20 21:15:33,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:15:33,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388909940] [2020-07-20 21:15:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:15:33,250 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:15:33,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:15:33,253 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-20 21:15:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:15:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 14 proven. 160 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-07-20 21:15:36,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:15:37,154 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:37,560 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:37,965 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:38,367 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:38,769 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:39,171 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:39,576 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:40,162 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:40,766 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:41,162 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:41,424 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:15:41,569 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:41,978 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:42,381 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:42,785 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:43,400 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:43,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:43,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:44,183 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:44,573 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:44,978 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:45,382 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:45,790 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:46,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:46,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:46,423 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:47,187 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:47,582 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:47,986 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:48,393 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:49,040 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:49,679 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:50,071 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:50,476 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:15:51,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:51,139 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:51,140 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:51,783 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:52,181 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:52,859 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:52,859 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:52,860 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:53,581 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:54,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:54,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:54,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:55,222 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:15:56,510 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:56,904 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:15:58,425 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:15:59,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:01,012 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:01,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:01,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:01,018 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-20 21:16:01,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388909940] [2020-07-20 21:16:01,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:16:01,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 35] total 48 [2020-07-20 21:16:01,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039247794] [2020-07-20 21:16:01,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-20 21:16:01,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:16:01,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-20 21:16:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2101, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 21:16:01,124 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 48 states. [2020-07-20 21:16:06,583 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:14,017 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:16:15,808 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:16:16,388 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:16:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:16:18,626 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-20 21:16:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 21:16:18,626 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 86 [2020-07-20 21:16:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:16:18,628 INFO L225 Difference]: With dead ends: 85 [2020-07-20 21:16:18,628 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 21:16:18,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=522, Invalid=4734, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 21:16:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 21:16:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-07-20 21:16:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 21:16:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2020-07-20 21:16:18,638 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 86 [2020-07-20 21:16:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:16:18,642 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2020-07-20 21:16:18,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-20 21:16:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2020-07-20 21:16:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-20 21:16:18,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:16:18,644 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:16:18,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:16:18,845 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:16:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:16:18,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1080603673, now seen corresponding path program 11 times [2020-07-20 21:16:18,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:16:18,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545128483] [2020-07-20 21:16:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:16:18,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:16:18,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:16:18,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 129 conjunts are in the unsatisfiable core [2020-07-20 21:16:18,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:16:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 47 proven. 161 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-20 21:16:23,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:16:24,637 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:25,042 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:25,447 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:25,865 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:26,283 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:26,695 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:26,965 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:27,112 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:27,523 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:28,221 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:16:28,688 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-20 21:16:29,455 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:29,858 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:30,284 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:30,451 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:30,702 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:31,127 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:31,401 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:31,551 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:31,969 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:32,683 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:16:32,684 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:16:34,041 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:34,449 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:34,616 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:34,873 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:35,292 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:35,459 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:35,709 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:36,127 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:36,878 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:36,883 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:36,884 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:16:38,132 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:38,295 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:16:38,542 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:38,813 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:38,963 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:39,384 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:39,553 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:39,806 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:40,583 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:40,588 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:40,589 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:16:41,896 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:42,304 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:42,574 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:42,725 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:43,143 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:43,310 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:43,946 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:43,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:43,951 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:43,952 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:16:45,313 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:45,720 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:45,888 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:46,142 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:16:46,413 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:46,969 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:46,974 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:46,975 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:16:46,976 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:48,378 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:48,787 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:16:48,956 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:49,066 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:16:49,644 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:49,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:49,650 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:49,650 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:16:51,095 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:51,964 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:16:51,969 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:51,969 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:16:51,970 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:53,895 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:16:53,899 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:53,900 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:53,900 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:55,405 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:55,606 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 21:16:55,723 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 21:16:56,433 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:16:57,161 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:16:58,167 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 21:16:58,171 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:16:58,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,175 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:16:58,175 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:17:00,333 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (or (< (div (+ .cse0 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3) (<= 3 (div (+ .cse0 (- 1)) (- 8))) (< (div .cse0 (- 8)) 1)))) .cse1 (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (let ((.cse3 (div .cse2 (- 8)))) (or (<= 3 (div (+ .cse2 (- 1)) (- 8))) (< .cse3 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 8)) 1)) (< .cse3 1))))) (or .cse1 (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_114 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3))))) is different from false [2020-07-20 21:17:02,365 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (or (< (div (+ .cse0 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3) (<= 3 (div (+ .cse0 (- 1)) (- 8))) (< (div .cse0 (- 8)) 1)))) (or (forall ((v_prenex_8 Int)) (< (div (+ (* v_prenex_8 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3)) .cse1) .cse1 (forall ((v_prenex_7 Int)) (let ((.cse3 (* v_prenex_7 (- 1)))) (let ((.cse2 (div .cse3 (- 8)))) (or (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 8)) 1)) (<= 3 (div (+ .cse3 (- 1)) (- 8))) (< .cse2 1))))))) is different from false [2020-07-20 21:17:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 267 refuted. 0 times theorem prover too weak. 55 trivial. 20 not checked. [2020-07-20 21:17:03,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545128483] [2020-07-20 21:17:03,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:17:03,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38] total 65 [2020-07-20 21:17:03,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23285744] [2020-07-20 21:17:03,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-20 21:17:03,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:17:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-20 21:17:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3714, Unknown=2, NotChecked=246, Total=4160 [2020-07-20 21:17:03,023 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand 65 states. [2020-07-20 21:17:48,530 WARN L193 SmtUtils]: Spent 44.37 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-20 21:17:54,715 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-20 21:17:58,507 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:17:59,641 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:12,769 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:18:15,532 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-20 21:18:17,028 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-20 21:18:21,203 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:18:22,567 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:18:23,322 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:18:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:18:23,813 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-07-20 21:18:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 21:18:23,831 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 86 [2020-07-20 21:18:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:18:23,832 INFO L225 Difference]: With dead ends: 90 [2020-07-20 21:18:23,832 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 21:18:23,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 87.3s TimeCoverageRelationStatistics Valid=620, Invalid=7218, Unknown=2, NotChecked=350, Total=8190 [2020-07-20 21:18:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 21:18:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2020-07-20 21:18:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 21:18:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 21:18:23,851 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 86 [2020-07-20 21:18:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:18:23,852 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 21:18:23,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-20 21:18:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 21:18:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 21:18:23,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:18:23,855 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:18:24,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:18:24,064 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:18:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:18:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash -567080281, now seen corresponding path program 12 times [2020-07-20 21:18:24,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:18:24,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323297944] [2020-07-20 21:18:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:18:24,168 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:18:24,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:18:24,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-20 21:18:24,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:18:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 228 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-07-20 21:18:27,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:18:28,772 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:29,038 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:29,259 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:29,397 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:29,593 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:29,817 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:29,954 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:30,150 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:30,378 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:30,518 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:30,717 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:30,943 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:31,083 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:31,289 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:31,501 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:18:31,629 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:18:32,066 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:32,893 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:33,111 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:33,245 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:33,447 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:33,667 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:33,801 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:34,013 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:34,238 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:34,376 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:34,574 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:34,800 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:34,945 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:35,431 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:36,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:36,127 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:36,290 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:36,508 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:36,648 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:36,860 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:37,090 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:37,228 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:37,432 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:37,655 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:37,790 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:38,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:38,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:38,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:38,870 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:39,127 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:39,341 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:39,474 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:39,667 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:39,889 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:40,032 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:40,543 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:40,543 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:40,544 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:41,246 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:41,504 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:41,724 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:41,857 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:42,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:42,385 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:42,385 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:42,989 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:43,629 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:44,981 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:45,141 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:45,357 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:45,493 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:45,691 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:45,918 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:46,056 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:46,254 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:46,489 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:46,630 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:46,838 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:47,066 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:47,208 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:47,412 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:47,634 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:47,774 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:47,978 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:48,185 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:18:48,315 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:18:49,936 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:50,151 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:50,279 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:50,485 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:50,712 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:50,853 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:51,057 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:51,286 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:51,427 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:51,626 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:51,853 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:51,997 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:52,193 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:52,427 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:52,569 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:53,139 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:53,833 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:54,646 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 21:18:54,884 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:54,990 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:18:55,149 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:55,369 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:55,505 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:55,705 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:18:55,936 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:56,074 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:56,274 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:56,502 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:56,643 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:56,849 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:18:57,079 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:57,223 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:18:58,022 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:18:58,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:18:58,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:18:58,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:18:59,636 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:18:59,852 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:18:59,982 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:00,185 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:00,413 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:00,556 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:00,763 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:00,995 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:01,138 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:01,917 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 21:19:01,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323297944] [2020-07-20 21:19:01,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:19:01,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-20 21:19:01,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322187457] [2020-07-20 21:19:01,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:19:01,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:19:01,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:19:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 21:19:01,924 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand 21 states. [2020-07-20 21:19:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:19:12,291 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-07-20 21:19:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 21:19:12,291 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-07-20 21:19:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:19:12,292 INFO L225 Difference]: With dead ends: 76 [2020-07-20 21:19:12,292 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 21:19:12,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=362, Invalid=3178, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 21:19:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 21:19:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-07-20 21:19:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-20 21:19:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-07-20 21:19:12,311 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 100 [2020-07-20 21:19:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:19:12,312 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-07-20 21:19:12,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 21:19:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-07-20 21:19:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 21:19:12,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:19:12,315 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:19:12,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:19:12,529 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:19:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:19:12,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1182847487, now seen corresponding path program 13 times [2020-07-20 21:19:12,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:19:12,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998495345] [2020-07-20 21:19:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:19:12,637 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:19:12,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:19:12,641 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-20 21:19:12,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:19:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 229 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-07-20 21:19:18,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:19:19,518 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:19,625 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:19,792 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:20,009 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:20,144 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:20,354 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:20,582 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:20,722 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:20,933 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:21,168 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:21,312 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:21,518 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:21,756 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:21,902 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:22,118 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:22,345 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:22,489 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:22,703 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:22,932 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:23,077 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:23,288 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:23,526 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:23,672 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:23,881 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:24,116 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:24,260 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:24,466 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:24,690 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:19:24,825 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:19:25,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:26,058 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:26,166 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:26,325 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:26,547 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:26,694 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:26,904 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:27,135 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:27,277 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:27,490 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:27,727 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:27,871 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:28,083 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:28,316 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:28,458 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:28,671 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:28,909 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:29,056 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:29,276 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:29,502 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:29,646 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:29,857 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:30,084 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:30,233 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:30,447 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:30,684 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:30,832 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:31,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:31,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:31,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:32,352 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:32,461 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:32,624 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:32,852 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:32,995 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:33,217 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:33,445 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:33,590 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:33,805 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:34,043 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:34,193 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:34,407 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:34,647 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:34,797 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:35,010 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:35,240 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:35,385 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:35,596 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:35,838 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:35,986 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:36,208 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:36,453 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:36,604 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:37,209 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:37,216 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:37,888 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:38,004 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:38,169 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:38,392 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:38,530 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:38,744 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:38,993 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:39,136 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:39,347 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:39,585 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:39,726 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:39,945 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:40,185 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:40,334 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:40,553 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:40,786 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:40,933 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:41,150 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:41,384 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:41,532 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:42,166 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:42,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:42,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:42,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:43,080 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:43,189 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:43,355 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:43,590 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:43,731 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:43,944 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:44,182 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:44,331 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:44,556 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:44,789 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:44,937 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:45,152 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:45,387 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:45,535 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:45,757 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:45,999 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:46,148 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:46,791 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:46,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:46,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:46,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:47,721 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:47,829 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:47,989 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:48,221 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:48,359 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:48,575 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:48,806 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:48,958 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:49,173 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:49,413 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:49,561 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:49,780 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:50,029 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:50,176 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:50,863 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:50,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:50,870 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:50,870 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:51,600 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:51,711 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:51,883 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:52,135 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:52,284 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:52,504 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:52,753 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:52,905 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:53,121 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:19:53,367 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:53,515 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:54,229 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:54,235 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:54,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:54,237 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:54,981 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:55,096 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:55,270 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:55,505 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:55,653 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:55,874 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:19:56,119 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:56,271 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:19:56,998 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:57,004 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:57,872 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:57,988 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:19:58,155 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:19:58,389 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:58,538 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:19:59,296 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:19:59,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:59,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:19:59,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:00,080 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:00,197 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:00,941 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:20:00,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:02,727 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:02,839 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:03,015 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:20:03,258 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:03,405 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:03,640 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:20:03,885 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:20:04,033 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:20:05,964 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:06,082 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:06,259 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:20:06,497 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:06,649 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:07,478 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:08,542 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 21:20:09,633 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:20:09,897 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:10,014 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:13,324 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:20:13,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:13,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:13,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 35 proven. 380 refuted. 3 times theorem prover too weak. 82 trivial. 0 not checked. [2020-07-20 21:20:13,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998495345] [2020-07-20 21:20:13,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:20:13,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 41] total 56 [2020-07-20 21:20:13,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241908572] [2020-07-20 21:20:13,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-20 21:20:13,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:20:13,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-20 21:20:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2897, Unknown=1, NotChecked=0, Total=3080 [2020-07-20 21:20:13,513 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand 56 states. [2020-07-20 21:20:22,808 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:20:23,737 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:36,626 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:20:38,289 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:20:40,269 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:20:42,194 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:43,590 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:20:44,676 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:20:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:20:48,409 INFO L93 Difference]: Finished difference Result 91 states and 125 transitions. [2020-07-20 21:20:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 21:20:48,409 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 100 [2020-07-20 21:20:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:20:48,411 INFO L225 Difference]: With dead ends: 91 [2020-07-20 21:20:48,411 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 21:20:48,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=665, Invalid=6474, Unknown=1, NotChecked=0, Total=7140 [2020-07-20 21:20:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 21:20:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2020-07-20 21:20:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:20:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2020-07-20 21:20:48,426 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 100 [2020-07-20 21:20:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:20:48,427 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-07-20 21:20:48,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-20 21:20:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2020-07-20 21:20:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-20 21:20:48,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:20:48,428 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:20:48,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:20:48,632 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:20:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:20:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash -547887379, now seen corresponding path program 14 times [2020-07-20 21:20:48,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:20:48,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576125918] [2020-07-20 21:20:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:20:48,759 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:20:48,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:20:48,763 WARN L261 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 181 conjunts are in the unsatisfiable core [2020-07-20 21:20:48,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:20:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 12 proven. 308 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-07-20 21:20:53,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:20:54,614 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:54,736 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:54,925 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:20:55,167 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:55,312 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:20:55,530 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:20:55,804 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:56,004 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:56,280 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:20:56,549 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:56,700 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:56,914 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:20:57,154 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:57,312 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:57,541 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:20:57,802 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:57,961 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:20:58,189 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:20:58,439 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:20:58,592 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:20:59,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:20:59,834 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:20:59,950 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:00,124 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:00,372 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:00,528 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:00,766 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:01,021 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:01,172 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:01,394 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:01,658 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:01,812 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:02,055 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:02,318 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:02,482 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:02,719 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:02,984 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:03,147 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:03,735 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:21:03,741 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:04,631 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:04,755 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:04,941 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:05,194 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:05,353 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:05,588 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:05,849 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:06,012 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:06,250 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:06,513 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:06,675 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:06,920 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:07,183 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:07,344 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:07,950 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:21:07,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:07,958 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:07,958 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:08,672 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:08,794 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:08,979 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:09,227 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:09,390 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:09,675 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:09,796 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:21:09,990 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:10,184 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:10,452 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:10,717 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:10,879 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:11,505 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:21:11,513 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:11,514 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:11,515 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:12,244 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:12,365 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:12,535 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:12,778 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:12,931 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:13,160 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:13,419 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:13,580 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:14,228 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:21:14,234 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:15,057 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:15,177 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:15,361 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:15,614 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:15,772 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:16,447 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:21:16,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:16,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:16,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:17,202 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:17,321 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:17,973 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:21:17,979 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:17,980 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:17,981 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:19,558 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:19,682 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:19,873 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:20,122 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:20,276 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:20,514 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:20,773 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:20,931 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:21,160 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:21,421 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:21,584 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:21,820 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:22,084 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:22,254 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:22,494 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:22,757 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:22,914 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:23,138 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:23,397 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:23,559 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:23,797 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:24,050 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:21:24,204 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:21:25,888 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:26,012 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:26,197 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:26,449 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:26,606 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:26,844 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:27,109 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:27,275 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:27,514 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:27,778 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:27,940 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:28,175 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:28,442 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:28,604 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:28,837 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:29,100 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:29,263 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:29,504 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:29,772 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:29,937 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:30,654 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:30,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:31,536 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:32,882 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 21:21:33,160 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:33,280 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:33,469 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:33,718 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:33,876 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:34,113 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:34,376 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:34,540 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:34,779 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:35,039 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:35,203 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:35,441 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:35,711 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:35,875 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:36,115 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:36,382 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:36,543 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:37,551 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:21:37,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:21:37,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:21:37,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:21:39,183 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:39,307 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:21:39,496 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:21:39,750 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:39,908 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:21:40,143 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:21:40,405 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:40,568 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:40,805 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:41,066 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:41,225 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:41,461 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:21:41,722 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:41,883 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:21:42,798 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 21:21:42,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576125918] [2020-07-20 21:21:42,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:21:42,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-20 21:21:42,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586065869] [2020-07-20 21:21:42,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 21:21:42,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:21:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 21:21:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2192, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 21:21:42,807 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 23 states. [2020-07-20 21:21:50,887 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:21:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:21:56,982 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-07-20 21:21:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 21:21:56,982 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-07-20 21:21:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:21:56,983 INFO L225 Difference]: With dead ends: 70 [2020-07-20 21:21:56,984 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 21:21:56,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=422, Invalid=3868, Unknown=0, NotChecked=0, Total=4290 [2020-07-20 21:21:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 21:21:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-07-20 21:21:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 21:21:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2020-07-20 21:21:56,992 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 114 [2020-07-20 21:21:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:21:56,992 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2020-07-20 21:21:56,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 21:21:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-07-20 21:21:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-20 21:21:56,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:21:56,994 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:21:57,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:21:57,209 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:21:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:21:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1612628798, now seen corresponding path program 15 times [2020-07-20 21:21:57,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:21:57,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739486928] [2020-07-20 21:21:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:21:57,351 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:21:57,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:21:57,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 169 conjunts are in the unsatisfiable core [2020-07-20 21:21:57,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:22:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 10 proven. 269 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-07-20 21:22:02,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:22:03,282 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:03,403 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:03,585 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:03,830 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:03,983 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:04,208 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:04,467 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:04,635 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:04,871 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:05,134 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:05,280 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:05,522 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:05,787 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:05,946 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:06,166 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:06,411 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:22:06,565 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:22:07,120 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:07,814 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:07,933 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:08,107 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:08,352 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:08,512 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:08,743 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:08,992 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:09,147 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:09,387 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:09,647 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:09,806 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:10,045 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:10,307 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:10,469 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:11,057 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:11,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:11,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:11,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:11,768 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:11,888 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:12,062 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:12,300 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:12,458 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:12,700 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:12,960 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:13,120 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:13,357 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:13,627 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:13,785 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:14,378 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:14,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:15,076 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:15,203 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:15,392 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:15,638 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:15,794 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:16,028 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:16,137 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:16,301 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:16,459 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:17,064 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:17,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:17,902 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:18,024 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:18,209 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:18,460 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:18,613 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:19,265 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:19,271 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:19,983 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:20,109 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:20,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:22,354 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:22,476 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:22,655 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:22,886 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:23,046 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:23,288 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:23,540 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:23,696 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:23,935 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:24,197 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:24,359 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:24,599 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:24,857 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:25,021 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:25,265 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:25,389 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:25,562 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:25,731 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:25,975 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:26,244 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:26,409 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:26,654 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:26,916 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:22:27,075 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:22:28,748 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:28,866 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:29,051 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:29,302 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:29,459 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:29,699 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:29,962 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:30,127 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:30,366 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:30,626 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:30,786 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:31,017 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:31,273 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:31,433 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:31,671 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:31,920 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:32,089 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:32,323 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:32,586 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:32,749 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:33,444 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:33,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:34,424 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 21:22:35,238 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:35,515 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:35,640 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:35,831 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:36,078 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:36,234 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:36,466 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:36,720 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:36,885 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:37,124 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:37,381 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:37,548 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:37,787 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:38,050 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:38,217 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:38,455 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:38,710 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:38,856 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:39,736 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:39,744 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:22:39,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:22:39,746 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:22:41,396 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:42,949 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 21:22:43,256 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:43,387 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:22:43,579 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:22:43,821 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:43,985 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:22:44,237 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:22:44,347 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:44,522 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:44,694 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:44,945 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:45,052 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:45,228 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:45,402 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:45,626 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:22:45,854 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:46,007 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:22:46,984 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 21:22:46,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739486928] [2020-07-20 21:22:46,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:22:46,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-20 21:22:46,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808633121] [2020-07-20 21:22:46,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 21:22:46,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:22:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 21:22:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 21:22:46,993 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand 23 states. [2020-07-20 21:22:52,110 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:55,107 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:55,952 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:56,467 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:22:57,350 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:22:59,698 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:00,713 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:01,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:23:01,309 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2020-07-20 21:23:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 21:23:01,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 107 [2020-07-20 21:23:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:23:01,334 INFO L225 Difference]: With dead ends: 70 [2020-07-20 21:23:01,334 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 21:23:01,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2020-07-20 21:23:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 21:23:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-07-20 21:23:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:23:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2020-07-20 21:23:01,352 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 107 [2020-07-20 21:23:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:23:01,355 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-07-20 21:23:01,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 21:23:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2020-07-20 21:23:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 21:23:01,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:23:01,356 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:23:01,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:23:01,567 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:23:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:23:01,568 INFO L82 PathProgramCache]: Analyzing trace with hash -992427037, now seen corresponding path program 16 times [2020-07-20 21:23:01,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:23:01,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663669097] [2020-07-20 21:23:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:23:01,719 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:23:01,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:23:01,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 153 conjunts are in the unsatisfiable core [2020-07-20 21:23:01,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:23:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 57 proven. 230 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-07-20 21:23:11,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:23:13,219 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:13,353 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:13,536 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:13,769 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:13,930 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:14,154 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:14,432 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:14,589 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:14,812 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:14,922 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:15,103 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:15,261 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:15,504 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:15,747 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:15,905 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:16,160 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:16,270 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:16,429 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:16,569 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:16,801 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:17,071 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:17,207 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:17,389 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:17,583 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:17,708 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:17,894 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:18,163 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:18,335 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:18,578 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:18,687 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:18,859 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:19,029 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:19,281 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:19,387 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:19,547 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:23:19,704 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 21:23:20,548 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:23:20,556 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:23:21,421 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-20 21:23:22,192 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:23:22,491 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:22,624 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:22,823 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:23,089 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:23,262 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:23,521 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:23,631 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:23,806 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:23,982 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:24,236 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:24,346 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:24,518 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:24,692 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:24,966 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:25,101 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:25,298 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:25,516 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:25,794 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:25,912 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:26,097 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:26,289 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:26,544 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:26,654 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:26,817 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:26,985 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:27,250 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:27,365 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:27,555 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:27,765 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:28,033 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:28,143 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:28,325 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:28,510 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:28,775 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:29,057 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:29,240 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:30,144 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:23:30,151 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:23:30,151 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:23:30,152 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:23:30,152 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:23:30,942 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:23:31,758 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:23:32,067 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:32,205 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:32,414 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:32,698 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:32,878 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:33,148 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:33,259 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:33,434 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:33,620 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:33,885 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:33,998 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:34,190 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:34,384 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:34,658 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:34,773 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:34,960 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:35,141 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:35,416 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:35,531 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:35,707 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:35,883 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:36,144 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:36,411 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:36,586 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:36,848 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:36,966 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:37,173 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:37,384 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:37,690 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:37,814 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:38,014 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:38,187 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:38,988 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:23:38,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:23:38,994 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:23:38,994 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:23:40,339 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:23:40,645 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:40,780 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:40,987 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:41,094 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:23:41,268 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:41,446 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:41,714 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:41,826 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:42,008 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:42,190 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:42,453 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:42,572 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:42,755 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:42,939 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:43,203 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:43,316 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:43,497 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:43,678 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:43,946 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:44,057 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:44,240 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:44,423 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:44,687 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:44,798 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:44,980 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:45,168 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:45,439 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:45,558 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:45,744 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:45,935 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:46,923 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:23:46,931 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:23:46,931 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:23:47,823 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:23:48,745 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:23:49,059 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:49,195 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:49,405 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:49,687 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:49,863 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:50,125 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:50,248 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:50,440 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:50,657 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:50,969 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:51,106 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:51,332 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:51,517 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:51,794 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:51,910 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:52,093 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:52,282 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:52,558 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:52,666 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:52,850 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:53,036 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:53,307 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:53,415 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:53,591 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:53,776 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:54,959 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:23:54,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:23:54,968 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:23:55,995 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:23:56,871 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:23:57,167 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:57,296 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:23:57,503 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:23:57,764 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:57,935 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:23:58,181 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:23:58,290 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:58,465 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:58,641 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:58,897 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:59,008 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:23:59,190 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:59,366 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:59,622 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:23:59,825 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:23:59,949 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:00,125 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:24:00,324 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:00,444 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:01,380 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:24:01,388 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:01,388 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:24:01,389 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:02,344 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:03,313 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:24:03,626 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:03,765 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:03,976 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:04,248 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:04,416 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:04,676 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:24:04,790 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:04,970 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:05,159 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:05,418 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:24:05,534 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:05,721 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:05,901 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:06,155 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:24:06,268 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:06,448 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:06,627 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:07,706 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:24:07,713 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:07,713 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:24:07,714 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:08,738 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:09,786 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:24:10,097 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:10,234 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:10,487 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:10,618 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:10,824 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:11,038 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:11,359 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:24:11,487 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:11,683 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:11,908 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:12,176 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:24:12,455 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:12,639 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:13,721 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:24:13,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:13,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:14,775 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:15,965 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:24:16,323 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:16,494 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:16,752 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:16,883 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:17,093 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:17,310 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:17,635 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:24:17,773 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:17,972 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:18,191 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-20 21:24:19,421 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:24:19,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:19,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:20,486 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:21,565 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:24:21,872 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:22,016 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:22,232 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:22,342 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:22,520 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:22,686 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 21:24:23,887 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 21:24:23,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:23,895 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 21:24:23,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:25,019 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-20 21:24:26,104 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:26,401 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:26,534 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:27,690 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:27,696 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:27,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:27,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:30,036 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:30,168 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-20 21:24:30,357 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 21:24:30,558 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 21:24:31,880 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:24:33,281 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:24:33,576 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:33,700 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 21:24:35,191 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 21:24:35,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:35,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:35,200 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:35,200 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:35,201 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:35,201 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:35,202 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:35,202 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:24:35,202 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 21:24:37,225 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_216 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_216 (- 1)))) (let ((.cse0 (div .cse1 (- 10)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 10)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 10))) (< .cse0 1))))) .cse2 (forall ((v_mult_~n_BEFORE_CALL_216 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_216 (- 1)))) (or (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 10)) 3) (<= 3 (div (+ .cse3 (- 1)) (- 10))) (< (div .cse3 (- 10)) 1)))) (or .cse2 (forall ((v_mult_~n_BEFORE_CALL_216 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_216 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 10)) 3))))) is different from false [2020-07-20 21:24:39,274 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_216 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_216 (- 1)))) (let ((.cse0 (div .cse1 (- 10)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 10)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 10))) (< .cse0 1))))) .cse2 (forall ((v_prenex_9 Int)) (let ((.cse3 (* v_prenex_9 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 10))) (< (div .cse3 (- 10)) 1) (< (div (+ (* |c_mult_#res| (- 1)) .cse3 (- 1)) (- 10)) 3)))) (or (forall ((v_prenex_10 Int)) (< (div (+ (* v_prenex_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 10)) 3)) .cse2))) is different from false [2020-07-20 21:24:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 5 proven. 393 refuted. 0 times theorem prover too weak. 78 trivial. 24 not checked. [2020-07-20 21:24:40,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663669097] [2020-07-20 21:24:40,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:24:40,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 44] total 75 [2020-07-20 21:24:40,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292613908] [2020-07-20 21:24:40,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-20 21:24:40,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:24:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-20 21:24:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=5036, Unknown=2, NotChecked=286, Total=5550 [2020-07-20 21:24:40,614 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 75 states. [2020-07-20 21:24:43,834 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-20 21:24:49,408 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 21:24:51,144 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:24:54,194 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:24:56,071 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:24:57,862 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:24:59,344 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:02,074 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:02,961 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:05,173 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:06,964 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:07,887 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:09,699 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:12,276 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:13,190 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:14,964 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:15,885 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:17,687 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 21:25:18,612 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:21,938 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-20 21:25:23,656 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-20 21:25:25,217 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:26,795 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-20 21:25:29,006 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:25:33,085 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-20 21:25:35,382 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:25:37,360 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 15