/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 BIGGEST_EQUIVALENCE_CLASS --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 [2020-07-21 00:32:18,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:32:18,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:32:18,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:32:18,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:32:18,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:32:18,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:32:18,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:32:18,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:32:18,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:32:18,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:32:18,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:32:18,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:32:18,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:32:18,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:32:18,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:32:18,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:32:18,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:32:18,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:32:18,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:32:18,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:32:18,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:32:18,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:32:18,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:32:18,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:32:18,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:32:18,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:32:18,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:32:18,129 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 [2020-07-21 00:32:18,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:32:18,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:32:18,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:32:18,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:32:18,145 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:32:18,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:32:18,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:32:18,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:32:18,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:32:18,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:32:18,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:32:18,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:32:18,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:32:18,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:32:18,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:32:18,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:32:18,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:32:18,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:32:18,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:32:18,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:32:18,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:32:18,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:18,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:32:18,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:32:18,150 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 00:32:18,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:32:18,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:32:18,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:32:18,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:32:18,434 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:32:18,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 00:32:18,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80c89ff8/775d26700f444bfcaaad142add408fb1/FLAG94aa919a0 [2020-07-21 00:32:18,901 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:32:18,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 00:32:18,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80c89ff8/775d26700f444bfcaaad142add408fb1/FLAG94aa919a0 [2020-07-21 00:32:19,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80c89ff8/775d26700f444bfcaaad142add408fb1 [2020-07-21 00:32:19,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:32:19,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:32:19,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:19,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:32:19,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:32:19,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2954c7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19, skipping insertion in model container [2020-07-21 00:32:19,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:32:19,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:32:19,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:19,532 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:32:19,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:19,562 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:32:19,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19 WrapperNode [2020-07-21 00:32:19,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:19,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:32:19,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:32:19,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:32:19,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (1/1) ... [2020-07-21 00:32:19,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:32:19,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:32:19,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:32:19,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:32:19,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (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 [2020-07-21 00:32:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:32:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:32:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-21 00:32:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:32:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:32:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 00:32:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-21 00:32:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:32:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:32:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:32:19,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:32:19,937 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 00:32:19,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:19 BoogieIcfgContainer [2020-07-21 00:32:19,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:32:19,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:32:19,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:32:19,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:32:19,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:32:19" (1/3) ... [2020-07-21 00:32:19,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4969f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:19, skipping insertion in model container [2020-07-21 00:32:19,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:19" (2/3) ... [2020-07-21 00:32:19,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4969f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:19, skipping insertion in model container [2020-07-21 00:32:19,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:19" (3/3) ... [2020-07-21 00:32:19,954 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-21 00:32:19,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:32:20,004 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:32:20,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:32:20,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:32:20,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:32:20,046 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:32:20,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:32:20,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:32:20,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:32:20,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:32:20,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:32:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 00:32:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 00:32:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:20,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:32:20,074 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-07-21 00:32:20,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:20,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278641113] [2020-07-21 00:32:20,087 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 [2020-07-21 00:32:20,172 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:20,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:20,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 00:32:20,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 00:32:20,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:32:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 00:32:20,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278641113] [2020-07-21 00:32:20,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:32:20,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 00:32:20,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731389113] [2020-07-21 00:32:20,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 00:32:20,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 00:32:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 00:32:20,390 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-21 00:32:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:32:20,514 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-07-21 00:32:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 00:32:20,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-21 00:32:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:32:20,528 INFO L225 Difference]: With dead ends: 41 [2020-07-21 00:32:20,528 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 00:32:20,532 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 [2020-07-21 00:32:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 00:32:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 00:32:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 00:32:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-07-21 00:32:20,583 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2020-07-21 00:32:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:32:20,584 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-07-21 00:32:20,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 00:32:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-07-21 00:32:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 00:32:20,590 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:20,590 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] [2020-07-21 00:32:20,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:20,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-07-21 00:32:20,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:20,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287135108] [2020-07-21 00:32:20,809 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 [2020-07-21 00:32:20,856 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:20,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:20,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 00:32:20,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 00:32:20,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:32:20,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287135108] [2020-07-21 00:32:20,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:32:20,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 00:32:20,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389714772] [2020-07-21 00:32:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 00:32:20,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 00:32:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 00:32:20,892 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 5 states. [2020-07-21 00:32:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:32:20,960 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-21 00:32:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 00:32:20,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 00:32:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:32:20,963 INFO L225 Difference]: With dead ends: 29 [2020-07-21 00:32:20,963 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 00:32:20,964 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 [2020-07-21 00:32:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 00:32:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 00:32:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 00:32:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-07-21 00:32:20,973 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2020-07-21 00:32:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:32:20,973 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-07-21 00:32:20,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 00:32:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-07-21 00:32:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 00:32:20,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:20,976 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] [2020-07-21 00:32:21,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:21,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-07-21 00:32:21,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:21,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077853818] [2020-07-21 00:32:21,195 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 [2020-07-21 00:32:21,253 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:21,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-21 00:32:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 00:32:21,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:32:21,768 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:21,925 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:21,927 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:32:21,929 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:22,332 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:32:22,335 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,337 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,340 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:22,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:22,344 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:22,347 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,348 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:22,349 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:22,350 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:22,352 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 00:32:22,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077853818] [2020-07-21 00:32:22,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:32:22,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 00:32:22,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390184104] [2020-07-21 00:32:22,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 00:32:22,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:22,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 00:32:22,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2020-07-21 00:32:22,403 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 30 states. [2020-07-21 00:32:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:32:23,181 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2020-07-21 00:32:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 00:32:23,181 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 37 [2020-07-21 00:32:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:32:23,185 INFO L225 Difference]: With dead ends: 43 [2020-07-21 00:32:23,185 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 00:32:23,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2020-07-21 00:32:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 00:32:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-07-21 00:32:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 00:32:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-21 00:32:23,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 37 [2020-07-21 00:32:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:32:23,218 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-21 00:32:23,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-21 00:32:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-07-21 00:32:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 00:32:23,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:23,222 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] [2020-07-21 00:32:23,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:23,431 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:23,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 1 times [2020-07-21 00:32:23,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:23,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190187792] [2020-07-21 00:32:23,434 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 [2020-07-21 00:32:23,476 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 00:32:23,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 00:32:23,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 00:32:23,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:32:23,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190187792] [2020-07-21 00:32:23,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:32:23,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 00:32:23,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432084237] [2020-07-21 00:32:23,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 00:32:23,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:23,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 00:32:23,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 00:32:23,506 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 5 states. [2020-07-21 00:32:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:32:23,579 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-07-21 00:32:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 00:32:23,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-21 00:32:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:32:23,582 INFO L225 Difference]: With dead ends: 57 [2020-07-21 00:32:23,582 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 00:32:23,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 00:32:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 00:32:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 00:32:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 00:32:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2020-07-21 00:32:23,608 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2020-07-21 00:32:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:32:23,608 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2020-07-21 00:32:23,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 00:32:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-07-21 00:32:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 00:32:23,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:23,612 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] [2020-07-21 00:32:23,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:23,827 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:23,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-07-21 00:32:23,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:23,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857629606] [2020-07-21 00:32:23,830 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 [2020-07-21 00:32:23,864 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:23,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:23,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 00:32:23,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 00:32:24,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:32:24,377 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:24,598 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:32:24,599 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:24,600 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:24,602 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:24,603 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:32:24,757 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:32:24,759 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:32:24,760 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:24,761 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,194 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,196 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,202 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,204 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,204 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,206 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,209 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,211 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,212 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,216 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,217 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,218 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,219 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,222 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,223 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,224 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,225 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,229 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:32:25,230 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:25,231 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:25,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:32:27,271 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 [2020-07-21 00:32:29,304 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_3 Int)) (let ((.cse2 (* v_prenex_3 (- 1)))) (let ((.cse1 (div .cse2 (- 2)))) (or (< .cse1 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 2)) 1)) (<= 3 (div (+ .cse2 (- 1)) (- 2))) (< .cse1 1))))) .cse0 (forall ((v_prenex_4 Int)) (let ((.cse3 (* v_prenex_4 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3) (< (div .cse3 (- 2)) 1)))))) is different from false [2020-07-21 00:32:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 8 not checked. [2020-07-21 00:32:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857629606] [2020-07-21 00:32:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:32:29,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 37 [2020-07-21 00:32:29,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594644503] [2020-07-21 00:32:29,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-21 00:32:29,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:29,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-21 00:32:29,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1070, Unknown=2, NotChecked=134, Total=1332 [2020-07-21 00:32:29,436 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 37 states. [2020-07-21 00:32:29,678 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 00:33:18,782 WARN L193 SmtUtils]: Spent 48.97 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-07-21 00:33:22,021 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-21 00:33:23,142 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:33:23,748 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 00:33:24,090 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:33:24,832 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:33:28,099 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:33:28,425 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:33:28,779 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:33:29,290 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-07-21 00:33:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:33:29,941 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-07-21 00:33:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 00:33:29,952 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 44 [2020-07-21 00:33:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:33:29,955 INFO L225 Difference]: With dead ends: 68 [2020-07-21 00:33:29,955 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 00:33:29,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=299, Invalid=2257, Unknown=2, NotChecked=198, Total=2756 [2020-07-21 00:33:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 00:33:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-07-21 00:33:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 00:33:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 69 transitions. [2020-07-21 00:33:29,974 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 69 transitions. Word has length 44 [2020-07-21 00:33:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:33:29,975 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 69 transitions. [2020-07-21 00:33:29,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-21 00:33:29,975 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2020-07-21 00:33:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 00:33:29,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:33:29,977 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] [2020-07-21 00:33:30,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:30,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:33:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:33:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 4 times [2020-07-21 00:33:30,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:33:30,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83685466] [2020-07-21 00:33:30,181 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 [2020-07-21 00:33:30,233 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:33:30,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:33:30,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 61 conjunts are in the unsatisfiable core [2020-07-21 00:33:30,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:33:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-21 00:33:31,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:33:31,907 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:32,425 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:32,427 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:33:33,503 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:33:34,655 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:33:34,656 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:33:34,837 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:34,839 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:33:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-21 00:33:34,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83685466] [2020-07-21 00:33:34,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:33:34,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 00:33:34,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499998258] [2020-07-21 00:33:34,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 00:33:34,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:34,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 00:33:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-07-21 00:33:34,909 INFO L87 Difference]: Start difference. First operand 47 states and 69 transitions. Second operand 25 states. [2020-07-21 00:33:37,408 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:33:38,349 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-07-21 00:33:38,709 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2020-07-21 00:33:39,341 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-07-21 00:33:39,612 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2020-07-21 00:33:40,156 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:33:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:33:40,911 INFO L93 Difference]: Finished difference Result 84 states and 125 transitions. [2020-07-21 00:33:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 00:33:40,920 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 44 [2020-07-21 00:33:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:33:40,923 INFO L225 Difference]: With dead ends: 84 [2020-07-21 00:33:40,924 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 00:33:40,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2020-07-21 00:33:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 00:33:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-07-21 00:33:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 00:33:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 92 transitions. [2020-07-21 00:33:40,952 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 92 transitions. Word has length 44 [2020-07-21 00:33:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:33:40,952 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 92 transitions. [2020-07-21 00:33:40,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 00:33:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 92 transitions. [2020-07-21 00:33:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 00:33:40,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:33:40,959 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:33:41,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:41,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:33:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:33:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash 901551359, now seen corresponding path program 2 times [2020-07-21 00:33:41,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:33:41,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728062805] [2020-07-21 00:33:41,166 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 [2020-07-21 00:33:41,202 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 00:33:41,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:33:41,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 00:33:41,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:33:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-07-21 00:33:41,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:33:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-07-21 00:33:41,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728062805] [2020-07-21 00:33:41,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:33:41,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-21 00:33:41,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109737770] [2020-07-21 00:33:41,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 00:33:41,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 00:33:41,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 00:33:41,948 INFO L87 Difference]: Start difference. First operand 56 states and 92 transitions. Second operand 7 states. [2020-07-21 00:33:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:33:42,219 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-07-21 00:33:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 00:33:42,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-07-21 00:33:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:33:42,229 INFO L225 Difference]: With dead ends: 82 [2020-07-21 00:33:42,230 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 00:33:42,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 00:33:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 00:33:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 00:33:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 00:33:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-07-21 00:33:42,242 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 50 [2020-07-21 00:33:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:33:42,242 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-07-21 00:33:42,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 00:33:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-07-21 00:33:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 00:33:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:33:42,244 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:33:42,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:42,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:33:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:33:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash -272057979, now seen corresponding path program 5 times [2020-07-21 00:33:42,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:33:42,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594410761] [2020-07-21 00:33:42,450 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 [2020-07-21 00:33:42,505 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:33:42,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:33:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 81 conjunts are in the unsatisfiable core [2020-07-21 00:33:42,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:33:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 00:33:44,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:33:45,372 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:33:46,303 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:47,612 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:33:48,028 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:48,029 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:48,030 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:48,031 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:48,032 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:33:49,078 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:33:49,565 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:49,565 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:49,566 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:49,567 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:33:50,729 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:50,730 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:50,731 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:33:50,733 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:51,800 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:51,801 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:33:51,802 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:51,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:51,803 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:33:53,379 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:33:53,751 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 00:33:54,260 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:33:54,264 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,265 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,266 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,266 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,267 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,269 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,269 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,270 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,275 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,280 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,285 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,291 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:54,294 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,295 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:33:54,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:33:54,297 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:56,318 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and .cse0 (forall ((v_mult_~n_BEFORE_CALL_26 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_26 (- 1)))) (or (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3) (< (div .cse1 (- 4)) 1) (<= 3 (div (+ .cse1 (- 1)) (- 4)))))) (forall ((v_mult_~n_BEFORE_CALL_26 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_26 (- 1)))) (let ((.cse2 (div .cse3 (- 4)))) (or (< .cse2 1) (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 4)) 1)) (<= 3 (div (+ .cse3 (- 1)) (- 4))))))) (or (forall ((v_mult_~n_BEFORE_CALL_26 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_26 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3)) .cse0))) is different from false [2020-07-21 00:33:58,380 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (< |c_mult_#in~m| 1))) (and (forall ((v_prenex_8 Int)) (let ((.cse0 (* v_prenex_8 (- 1)))) (let ((.cse1 (div .cse0 (- 4)))) (or (<= 3 (div (+ .cse0 (- 1)) (- 4))) (< .cse1 1) (< .cse1 (+ (div (+ .cse0 (* |c_mult_#res| (- 1))) (- 4)) 1)))))) (or (forall ((v_prenex_9 Int)) (< (div (+ (* |c_mult_#res| (- 1)) (* v_prenex_9 (- 1)) (- 1)) (- 4)) 3)) .cse2) .cse2 (forall ((v_mult_~n_BEFORE_CALL_26 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_26 (- 1)))) (or (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3) (< (div .cse3 (- 4)) 1) (<= 3 (div (+ .cse3 (- 1)) (- 4)))))))) is different from false [2020-07-21 00:33:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 86 refuted. 0 times theorem prover too weak. 21 trivial. 12 not checked. [2020-07-21 00:33:58,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594410761] [2020-07-21 00:33:58,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:33:58,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 47 [2020-07-21 00:33:58,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087783349] [2020-07-21 00:33:58,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-21 00:33:58,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:58,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-21 00:33:58,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1832, Unknown=2, NotChecked=174, Total=2162 [2020-07-21 00:33:58,704 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 47 states. [2020-07-21 00:34:19,724 WARN L193 SmtUtils]: Spent 20.27 s on a formula simplification. DAG size of input: 51 DAG size of output: 13 [2020-07-21 00:34:20,514 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:34:20,922 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:34:21,349 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:34:22,819 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 00:34:23,779 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:24,242 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:34:24,837 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:34:25,449 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:34:26,127 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:34:27,114 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:34:27,855 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 17 [2020-07-21 00:34:28,725 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-07-21 00:34:31,509 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 18 [2020-07-21 00:34:32,472 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 17 [2020-07-21 00:34:33,015 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:34:33,559 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:34:34,095 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:34:34,938 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-21 00:34:35,505 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:34:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:34:35,525 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-07-21 00:34:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 00:34:35,536 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 58 [2020-07-21 00:34:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:34:35,538 INFO L225 Difference]: With dead ends: 81 [2020-07-21 00:34:35,538 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 00:34:35,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=547, Invalid=4289, Unknown=2, NotChecked=274, Total=5112 [2020-07-21 00:34:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 00:34:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2020-07-21 00:34:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 00:34:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 73 transitions. [2020-07-21 00:34:35,552 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 73 transitions. Word has length 58 [2020-07-21 00:34:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:34:35,552 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 73 transitions. [2020-07-21 00:34:35,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-21 00:34:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 73 transitions. [2020-07-21 00:34:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 00:34:35,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:34:35,554 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] [2020-07-21 00:34:35,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:34:35,757 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:34:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:34:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 6 times [2020-07-21 00:34:35,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:34:35,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883979569] [2020-07-21 00:34:35,759 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 [2020-07-21 00:34:35,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:34:35,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:34:35,818 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 00:34:35,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:34:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-07-21 00:34:37,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:34:38,566 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:38,810 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:34:38,943 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:34:39,379 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:40,201 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:40,650 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:40,651 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:40,651 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:40,652 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:41,656 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:41,657 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:41,658 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:41,659 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:42,300 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:42,301 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:42,302 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:42,302 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:43,516 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:34:43,864 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:44,230 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:34:45,375 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:34:45,728 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:46,264 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:34:46,265 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:46,921 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:46,922 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:46,923 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:46,924 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:47,144 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:34:47,145 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:34:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 00:34:47,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883979569] [2020-07-21 00:34:47,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:34:47,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 31 [2020-07-21 00:34:47,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782408071] [2020-07-21 00:34:47,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-21 00:34:47,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:34:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-21 00:34:47,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2020-07-21 00:34:47,230 INFO L87 Difference]: Start difference. First operand 52 states and 73 transitions. Second operand 31 states. [2020-07-21 00:34:47,832 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:34:48,272 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:34:48,590 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:34:48,907 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:34:49,307 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:34:49,772 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:34:50,216 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:34:50,680 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:34:51,062 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:34:52,456 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:34:52,994 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-21 00:34:53,619 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-21 00:34:53,984 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:34:54,319 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:34:54,718 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:34:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:34:54,813 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2020-07-21 00:34:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 00:34:54,823 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-07-21 00:34:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:34:54,824 INFO L225 Difference]: With dead ends: 68 [2020-07-21 00:34:54,824 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 00:34:54,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=297, Invalid=2153, Unknown=0, NotChecked=0, Total=2450 [2020-07-21 00:34:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 00:34:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-07-21 00:34:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 00:34:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2020-07-21 00:34:54,835 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 65 [2020-07-21 00:34:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:34:54,836 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2020-07-21 00:34:54,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-21 00:34:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2020-07-21 00:34:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 00:34:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:34:54,838 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] [2020-07-21 00:34:55,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:34:55,052 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:34:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:34:55,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1602258660, now seen corresponding path program 7 times [2020-07-21 00:34:55,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:34:55,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37084221] [2020-07-21 00:34:55,054 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 [2020-07-21 00:34:55,110 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:34:55,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:34:55,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 93 conjunts are in the unsatisfiable core [2020-07-21 00:34:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:34:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 80 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-21 00:34:58,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:34:59,271 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:34:59,612 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:34:59,957 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:00,290 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:00,753 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:35:01,062 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:35:02,027 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:02,370 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:02,725 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:03,255 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:03,255 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:35:03,256 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:35:03,257 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:35:03,257 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:35:04,170 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:35:04,578 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:04,754 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:04,867 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:05,034 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:05,296 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:05,704 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:05,705 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:05,706 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:35:05,707 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:06,848 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:07,482 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:35:07,487 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:07,488 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:07,489 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:07,489 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:08,955 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:08,956 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:08,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:10,127 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:10,129 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:10,130 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:10,130 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:11,990 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:35:12,407 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:13,023 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:13,026 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:35:13,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,029 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,030 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:13,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:13,038 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,039 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:13,039 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:35:13,040 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 134 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-21 00:35:13,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37084221] [2020-07-21 00:35:13,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:35:13,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 50 [2020-07-21 00:35:13,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111157607] [2020-07-21 00:35:13,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-21 00:35:13,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:35:13,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-21 00:35:13,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2020-07-21 00:35:13,459 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand 50 states. [2020-07-21 00:35:15,017 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:35:17,472 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 00:35:18,535 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:35:19,412 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:35:20,193 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:35:21,057 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:35:23,198 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 00:35:24,154 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2020-07-21 00:35:24,733 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 00:35:25,306 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 18 [2020-07-21 00:35:25,857 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 00:35:26,491 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 18 [2020-07-21 00:35:27,039 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 00:35:27,652 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 00:35:28,198 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2020-07-21 00:35:29,399 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 00:35:30,954 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:35:31,830 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:35:32,329 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 00:35:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:35:32,709 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2020-07-21 00:35:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-21 00:35:32,717 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 65 [2020-07-21 00:35:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:35:32,720 INFO L225 Difference]: With dead ends: 102 [2020-07-21 00:35:32,720 INFO L226 Difference]: Without dead ends: 93 [2020-07-21 00:35:32,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 71 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=727, Invalid=5593, Unknown=0, NotChecked=0, Total=6320 [2020-07-21 00:35:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-21 00:35:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2020-07-21 00:35:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 00:35:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2020-07-21 00:35:32,737 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 65 [2020-07-21 00:35:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:35:32,737 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2020-07-21 00:35:32,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-21 00:35:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2020-07-21 00:35:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 00:35:32,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:35:32,739 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:35:32,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:35:32,948 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:35:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:35:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash -335786642, now seen corresponding path program 8 times [2020-07-21 00:35:32,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:35:32,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747597275] [2020-07-21 00:35:32,950 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 [2020-07-21 00:35:33,020 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:35:33,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:35:33,024 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 00:35:33,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:35:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 6 proven. 197 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-07-21 00:35:35,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:35:36,582 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:36,933 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:37,098 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:37,211 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:37,374 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:37,557 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:37,791 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:37,974 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:38,183 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:38,632 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:39,465 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:39,789 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:40,144 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:40,483 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:41,025 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:41,026 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:41,027 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:41,027 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:41,900 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:35:42,074 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:35:42,190 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:35:42,341 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:42,525 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:42,635 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:42,793 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:42,986 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:43,106 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:43,303 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:43,515 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:43,642 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:35:44,050 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:44,050 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:44,876 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:45,191 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:45,704 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:45,705 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:45,706 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:45,707 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:46,554 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:47,068 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:47,069 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:48,195 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:48,195 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:48,196 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:48,197 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:48,998 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:48,998 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:50,582 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:50,896 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:51,226 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:52,734 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:53,068 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:35:53,647 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:35:53,647 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:55,336 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:35:56,036 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:35:56,041 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:35:56,043 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:35:56,043 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:35:56,705 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 00:35:58,217 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 00:35:58,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747597275] [2020-07-21 00:35:58,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:35:58,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-21 00:35:58,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245171134] [2020-07-21 00:35:58,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 00:35:58,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:35:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 00:35:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2188, Unknown=0, NotChecked=0, Total=2352 [2020-07-21 00:35:58,224 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand 22 states. [2020-07-21 00:35:59,044 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:36:00,282 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:36:00,748 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:01,221 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:01,685 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:02,052 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:02,404 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:02,777 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:03,224 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:04,198 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:05,410 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:36:05,891 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:36:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:36:06,074 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2020-07-21 00:36:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-21 00:36:06,084 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 93 [2020-07-21 00:36:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:36:06,085 INFO L225 Difference]: With dead ends: 90 [2020-07-21 00:36:06,086 INFO L226 Difference]: Without dead ends: 86 [2020-07-21 00:36:06,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=449, Invalid=3711, Unknown=0, NotChecked=0, Total=4160 [2020-07-21 00:36:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-21 00:36:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2020-07-21 00:36:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-21 00:36:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 110 transitions. [2020-07-21 00:36:06,099 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 110 transitions. Word has length 93 [2020-07-21 00:36:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:36:06,100 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 110 transitions. [2020-07-21 00:36:06,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 00:36:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 110 transitions. [2020-07-21 00:36:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 00:36:06,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:36:06,102 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:36:06,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:36:06,316 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:36:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:36:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1806425208, now seen corresponding path program 9 times [2020-07-21 00:36:06,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:36:06,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441395843] [2020-07-21 00:36:06,318 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 [2020-07-21 00:36:06,389 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:36:06,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:36:06,393 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 121 conjunts are in the unsatisfiable core [2020-07-21 00:36:06,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:36:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-21 00:36:09,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:36:10,285 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:36:10,461 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:10,568 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:10,733 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:10,924 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:11,036 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:11,189 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:11,377 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:11,487 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:11,602 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:11,941 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:12,271 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:12,758 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:13,617 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:13,964 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:14,149 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:14,407 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:14,592 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:14,710 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:14,874 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:15,170 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:15,592 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:15,593 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:16,559 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:36:16,841 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:17,006 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:17,196 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:17,310 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:17,476 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:17,654 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:17,785 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:36:17,925 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:18,443 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:18,444 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:19,371 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:19,707 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:20,228 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:20,229 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:21,160 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:21,734 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:21,734 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:22,981 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:22,984 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:23,850 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:23,851 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:25,515 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:27,296 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:36:27,297 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:28,825 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:36:28,830 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:28,832 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:36:28,833 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:36:28,854 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:28,861 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 00:36:28,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441395843] [2020-07-21 00:36:28,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:36:28,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 33] total 46 [2020-07-21 00:36:28,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036230047] [2020-07-21 00:36:28,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-21 00:36:28,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:36:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-21 00:36:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2020-07-21 00:36:28,961 INFO L87 Difference]: Start difference. First operand 79 states and 110 transitions. Second operand 46 states. [2020-07-21 00:36:31,295 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:36:31,866 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:32,501 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:33,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:33,730 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:36:34,124 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:34,893 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:35,939 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:36,688 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:37,098 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:37,700 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:38,822 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:36:40,754 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:36:41,236 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:41,932 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:36:42,461 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:36:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:36:42,622 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2020-07-21 00:36:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 00:36:42,631 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 79 [2020-07-21 00:36:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:36:42,632 INFO L225 Difference]: With dead ends: 98 [2020-07-21 00:36:42,633 INFO L226 Difference]: Without dead ends: 88 [2020-07-21 00:36:42,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 101 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=555, Invalid=4415, Unknown=0, NotChecked=0, Total=4970 [2020-07-21 00:36:42,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-21 00:36:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2020-07-21 00:36:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-21 00:36:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2020-07-21 00:36:42,652 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 79 [2020-07-21 00:36:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:36:42,653 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2020-07-21 00:36:42,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-21 00:36:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2020-07-21 00:36:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 00:36:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:36:42,656 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] [2020-07-21 00:36:42,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:36:42,857 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:36:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:36:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 10 times [2020-07-21 00:36:42,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:36:42,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074041943] [2020-07-21 00:36:42,858 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 [2020-07-21 00:36:42,923 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:36:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:36:42,926 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 00:36:42,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:36:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-21 00:36:44,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:36:45,500 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:36:45,662 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:45,781 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:45,959 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:46,148 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:36:46,261 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:36:46,574 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:47,283 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:36:47,465 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:47,580 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:36:47,989 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:36:47,996 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:47,996 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:47,997 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:47,998 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:48,989 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:48,990 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:36:50,567 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:50,942 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:51,296 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:51,556 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:36:52,971 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:53,308 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:36:53,829 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:36:53,830 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:36:54,785 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:36:55,318 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,319 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,320 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,321 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,911 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,912 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,913 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:55,914 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:56,143 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:56,144 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:56,145 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:56,145 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:36:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 00:36:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074041943] [2020-07-21 00:36:56,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:36:56,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 33 [2020-07-21 00:36:56,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38418404] [2020-07-21 00:36:56,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-21 00:36:56,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:36:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-21 00:36:56,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2020-07-21 00:36:56,243 INFO L87 Difference]: Start difference. First operand 79 states and 105 transitions. Second operand 33 states. [2020-07-21 00:36:56,961 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:36:57,471 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:36:57,783 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:36:58,228 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:36:58,663 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:59,176 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:36:59,481 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:36:59,807 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:00,106 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:00,600 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:37:00,975 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:37:01,470 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:37:02,739 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-07-21 00:37:03,327 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-07-21 00:37:04,006 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:37:04,867 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:05,790 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-07-21 00:37:06,282 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:37:07,115 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:07,670 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:37:07,792 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2020-07-21 00:37:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 00:37:07,801 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2020-07-21 00:37:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:37:07,802 INFO L225 Difference]: With dead ends: 104 [2020-07-21 00:37:07,802 INFO L226 Difference]: Without dead ends: 92 [2020-07-21 00:37:07,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 89 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=426, Invalid=2766, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 00:37:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-21 00:37:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-07-21 00:37:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 00:37:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-07-21 00:37:07,814 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 65 [2020-07-21 00:37:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:37:07,814 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-07-21 00:37:07,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-21 00:37:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-07-21 00:37:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 00:37:07,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:37:07,816 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] [2020-07-21 00:37:08,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:37:08,028 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:37:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:37:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -180332919, now seen corresponding path program 11 times [2020-07-21 00:37:08,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:37:08,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900944604] [2020-07-21 00:37:08,030 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 [2020-07-21 00:37:08,110 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:37:08,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:37:08,113 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 00:37:08,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:37:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-07-21 00:37:11,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:37:12,469 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:12,865 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:13,037 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:13,272 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:13,629 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:13,987 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:14,347 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:14,714 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:15,252 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:16,194 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:16,538 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:16,904 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:17,278 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:17,634 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:18,184 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:18,185 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:18,185 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:18,186 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:18,987 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:19,369 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:19,739 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:20,096 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:20,443 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:21,106 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:37:21,111 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:21,112 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:22,184 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:22,364 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:37:22,613 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:22,790 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:23,062 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:23,263 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:23,381 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:23,544 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:23,727 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:23,839 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:37:24,298 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:24,298 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:25,072 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:25,437 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:25,801 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:26,425 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:26,425 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:27,112 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:27,501 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:28,143 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:28,144 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:29,491 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:29,491 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:29,492 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:29,493 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:30,457 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:30,458 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:32,066 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:32,430 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:33,901 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:34,610 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:37:34,611 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:36,416 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 00:37:36,420 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:36,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:37:36,421 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:36,428 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:37:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 00:37:36,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900944604] [2020-07-21 00:37:36,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:37:36,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 36] total 50 [2020-07-21 00:37:36,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311122992] [2020-07-21 00:37:36,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-21 00:37:36,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:37:36,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-21 00:37:36,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2020-07-21 00:37:36,557 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 50 states. [2020-07-21 00:37:37,395 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:37:38,049 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:37:38,455 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:37:38,875 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:37:39,441 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:40,120 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:40,653 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:41,396 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:37:41,863 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:42,726 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:43,795 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:44,487 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:44,957 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:45,542 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:46,030 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:37:46,562 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:37:47,053 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:37:48,040 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:37:49,994 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:50,607 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:37:52,009 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:52,646 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:37:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:37:52,651 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2020-07-21 00:37:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 00:37:52,651 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 86 [2020-07-21 00:37:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:37:52,652 INFO L225 Difference]: With dead ends: 105 [2020-07-21 00:37:52,653 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 00:37:52,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 107 SyntacticMatches, 16 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=630, Invalid=5222, Unknown=0, NotChecked=0, Total=5852 [2020-07-21 00:37:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 00:37:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2020-07-21 00:37:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 00:37:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2020-07-21 00:37:52,665 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 86 [2020-07-21 00:37:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:37:52,666 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2020-07-21 00:37:52,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-21 00:37:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2020-07-21 00:37:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 00:37:52,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:37:52,668 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] [2020-07-21 00:37:52,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:37:52,880 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:37:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:37:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1525719705, now seen corresponding path program 12 times [2020-07-21 00:37:52,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:37:52,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341578586] [2020-07-21 00:37:52,882 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 [2020-07-21 00:37:52,974 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:37:52,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:37:52,978 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 00:37:52,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:37:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-07-21 00:37:55,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:37:56,179 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:37:56,538 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:56,909 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:57,262 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:57,776 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:58,735 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:37:59,101 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:37:59,640 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:59,640 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:59,641 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:37:59,641 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:00,595 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:01,138 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:01,140 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:01,141 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:01,142 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:02,376 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:02,377 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:03,199 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:03,200 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:04,543 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:04,905 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:05,281 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:05,639 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:06,026 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:07,354 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:07,725 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:08,117 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:08,378 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:08,542 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:08,718 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:09,223 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:38:09,224 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:38:09,709 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:10,224 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:38:10,588 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:10,783 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:38:10,903 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:38:11,072 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:11,274 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:11,409 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:11,579 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:12,480 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:38:12,486 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:12,487 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:12,487 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:38:13,185 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 00:38:13,978 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:14,278 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:38:14,445 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:15,360 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-07-21 00:38:15,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341578586] [2020-07-21 00:38:15,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:38:15,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-07-21 00:38:15,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506451960] [2020-07-21 00:38:15,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 00:38:15,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:38:15,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 00:38:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2020-07-21 00:38:15,366 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand 20 states. [2020-07-21 00:38:16,167 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:38:16,774 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:38:17,134 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:38:17,610 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:38:18,000 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:38:18,578 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:38:18,953 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:38:19,342 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:38:19,715 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:38:20,188 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:38:20,612 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:38:21,918 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-07-21 00:38:22,542 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-07-21 00:38:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:38:22,545 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-07-21 00:38:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 00:38:22,546 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-07-21 00:38:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:38:22,547 INFO L225 Difference]: With dead ends: 88 [2020-07-21 00:38:22,548 INFO L226 Difference]: Without dead ends: 84 [2020-07-21 00:38:22,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=362, Invalid=2830, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 00:38:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-21 00:38:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-07-21 00:38:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 00:38:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2020-07-21 00:38:22,562 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 86 [2020-07-21 00:38:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:38:22,562 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2020-07-21 00:38:22,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 00:38:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2020-07-21 00:38:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 00:38:22,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:38:22,565 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] [2020-07-21 00:38:22,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:38:22,780 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:38:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:38:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash -330893523, now seen corresponding path program 13 times [2020-07-21 00:38:22,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:38:22,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405210603] [2020-07-21 00:38:22,782 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 [2020-07-21 00:38:22,897 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:38:22,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:38:22,904 WARN L261 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 181 conjunts are in the unsatisfiable core [2020-07-21 00:38:22,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:38:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 8 proven. 315 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-07-21 00:38:27,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:38:28,480 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:38:28,639 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:28,808 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:28,913 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:29,051 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:29,442 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:29,831 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:30,224 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:30,612 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:30,785 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:30,895 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:31,050 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:31,683 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:32,368 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:32,765 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:32,945 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:33,049 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:33,190 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:33,353 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:33,587 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:33,973 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:34,405 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:34,608 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:34,750 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:34,931 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:35,588 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:35,589 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:36,259 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:36,600 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:36,765 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:37,009 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:37,453 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:37,671 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:37,789 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:37,944 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:38,329 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:39,003 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:39,004 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:39,004 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:39,005 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:39,938 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:40,309 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:40,681 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:40,869 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:40,998 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:41,144 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:41,542 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:42,204 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:42,205 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:42,206 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:42,207 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:43,107 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:43,507 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:43,916 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:44,092 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:44,322 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:45,040 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:45,040 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:45,807 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:46,200 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:46,567 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:47,311 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:47,312 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:48,074 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:48,444 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:49,185 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:49,185 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:49,186 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:49,187 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:50,752 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:50,753 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:51,892 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:38:51,893 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:38:53,647 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:54,030 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:54,417 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:54,818 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:55,081 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:55,230 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:56,979 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:38:57,241 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:38:57,380 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:38:57,646 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:57,777 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:58,151 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:38:58,315 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:58,419 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:38:58,993 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:38:58,994 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:38:59,713 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:39:00,711 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:39:01,108 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:01,276 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:39:01,384 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:39:01,533 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:01,733 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:39:01,847 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:39:02,478 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:39:02,482 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:02,482 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:39:02,492 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:02,498 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:03,262 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 00:39:04,347 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:39:04,615 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:39:04,764 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:05,042 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:39:05,800 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 00:39:05,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405210603] [2020-07-21 00:39:05,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:39:05,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-07-21 00:39:05,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416409078] [2020-07-21 00:39:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 00:39:05,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:39:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 00:39:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3000, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 00:39:05,807 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand 26 states. [2020-07-21 00:39:06,978 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:39:07,799 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:39:08,331 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:39:08,829 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:39:09,457 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:10,145 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:10,821 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:11,320 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:11,852 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:12,352 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:12,984 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:13,490 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:14,166 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:14,945 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:15,572 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:16,114 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:16,770 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:17,934 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 00:39:18,669 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 00:39:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:39:19,129 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-07-21 00:39:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 00:39:19,140 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 114 [2020-07-21 00:39:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:39:19,142 INFO L225 Difference]: With dead ends: 94 [2020-07-21 00:39:19,142 INFO L226 Difference]: Without dead ends: 90 [2020-07-21 00:39:19,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 125 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=591, Invalid=5261, Unknown=0, NotChecked=0, Total=5852 [2020-07-21 00:39:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-21 00:39:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2020-07-21 00:39:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 00:39:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2020-07-21 00:39:19,152 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 114 [2020-07-21 00:39:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:39:19,152 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2020-07-21 00:39:19,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 00:39:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2020-07-21 00:39:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 00:39:19,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:39:19,154 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:39:19,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:39:19,368 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:39:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:39:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash 365189506, now seen corresponding path program 14 times [2020-07-21 00:39:19,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:39:19,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451064255] [2020-07-21 00:39:19,370 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 [2020-07-21 00:39:19,492 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:39:19,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:39:19,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 00:39:19,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:39:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 8 proven. 201 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-07-21 00:39:24,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:39:25,207 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:25,570 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:25,925 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:26,279 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:26,657 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:27,020 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:27,382 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:27,921 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:28,921 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:29,275 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:29,651 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:30,010 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:30,360 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:30,716 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:31,311 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:31,312 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:31,312 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:31,313 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:32,317 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:32,681 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:33,040 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:33,398 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:33,767 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:34,382 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:34,382 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:34,383 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:34,384 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:35,658 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:36,025 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:36,396 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:36,759 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:37,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:37,460 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:37,461 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:37,461 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:38,661 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:39,017 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:39,337 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:40,067 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:40,068 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:40,900 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:39:41,080 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:39:41,329 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:41,729 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:39:42,412 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:42,413 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:43,448 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:44,114 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:44,115 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:45,612 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:45,613 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:46,831 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:46,832 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:48,838 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:39:50,298 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:39:51,029 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:39:51,030 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:53,001 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 00:39:53,005 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:53,014 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:39:53,014 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:39:53,021 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:39:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 35 proven. 315 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-07-21 00:39:53,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451064255] [2020-07-21 00:39:53,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:39:53,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39] total 54 [2020-07-21 00:39:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365990650] [2020-07-21 00:39:53,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-21 00:39:53,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:39:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-21 00:39:53,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2684, Unknown=0, NotChecked=0, Total=2862 [2020-07-21 00:39:53,155 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand 54 states. [2020-07-21 00:39:54,298 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:39:55,160 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:39:55,662 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:39:56,141 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:39:56,851 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:57,725 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:39:58,595 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:39:59,660 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:40:00,169 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:01,078 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:01,567 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:40:02,542 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:03,481 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:03,987 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:04,782 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:05,314 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:06,050 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:06,699 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:07,468 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:08,040 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:40:08,956 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:40:10,906 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:40:11,852 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:40:13,463 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 00:40:14,180 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 00:40:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:40:14,184 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2020-07-21 00:40:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-21 00:40:14,184 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 93 [2020-07-21 00:40:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:40:14,185 INFO L225 Difference]: With dead ends: 108 [2020-07-21 00:40:14,186 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 00:40:14,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 16 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=709, Invalid=6097, Unknown=0, NotChecked=0, Total=6806 [2020-07-21 00:40:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 00:40:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-07-21 00:40:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 00:40:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-21 00:40:14,195 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 93 [2020-07-21 00:40:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:40:14,195 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-21 00:40:14,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-21 00:40:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-21 00:40:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 00:40:14,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:40:14,197 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] [2020-07-21 00:40:14,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:40:14,411 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:40:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:40:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash -567080281, now seen corresponding path program 15 times [2020-07-21 00:40:14,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:40:14,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153765163] [2020-07-21 00:40:14,413 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 [2020-07-21 00:40:14,543 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:40:14,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:40:14,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 00:40:14,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:40:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 5 proven. 233 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-07-21 00:40:18,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:40:18,926 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:40:19,081 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:19,455 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:19,829 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:20,192 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:20,563 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:21,082 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:21,689 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:22,065 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:22,344 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:40:22,508 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:22,696 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:40:22,812 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:40:22,945 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:23,527 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:23,527 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:40:24,419 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:24,753 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:25,375 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:40:25,379 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:25,380 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:40:26,455 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:27,062 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:27,063 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:27,064 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:27,064 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:28,417 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:28,418 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:28,418 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:28,419 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:29,322 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:29,322 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:29,323 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:29,323 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:30,031 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 00:40:30,886 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:40:30,996 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:40:31,150 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:31,544 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:31,932 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:32,317 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:32,714 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:32,983 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:40:33,157 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:34,708 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:34,930 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:40:35,072 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:40:35,258 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:35,456 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:40:35,672 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:36,037 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:36,417 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:37,104 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:40:37,104 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:38,596 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:38,961 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:39,347 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:39,721 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:40,720 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:40:40,724 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:40:40,725 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:40:40,725 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:40:41,361 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 00:40:42,240 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:40:42,620 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:40:42,999 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:40:43,857 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-07-21 00:40:43,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153765163] [2020-07-21 00:40:43,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:40:43,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-21 00:40:43,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405520508] [2020-07-21 00:40:43,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 00:40:43,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:40:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 00:40:43,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2007, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 00:40:43,863 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 22 states. [2020-07-21 00:40:44,753 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:40:45,455 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:40:45,855 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:40:46,249 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:40:46,723 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:47,212 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:47,696 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:48,186 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:48,623 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:49,029 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:49,549 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:50,070 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:40:50,823 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:40:52,250 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-07-21 00:40:52,850 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-07-21 00:40:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:40:53,265 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-07-21 00:40:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-21 00:40:53,275 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 100 [2020-07-21 00:40:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:40:53,277 INFO L225 Difference]: With dead ends: 93 [2020-07-21 00:40:53,277 INFO L226 Difference]: Without dead ends: 89 [2020-07-21 00:40:53,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=425, Invalid=3481, Unknown=0, NotChecked=0, Total=3906 [2020-07-21 00:40:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-21 00:40:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-07-21 00:40:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-21 00:40:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 112 transitions. [2020-07-21 00:40:53,294 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 112 transitions. Word has length 100 [2020-07-21 00:40:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:40:53,297 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 112 transitions. [2020-07-21 00:40:53,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 00:40:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2020-07-21 00:40:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 00:40:53,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:40:53,298 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:40:53,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:40:53,505 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:40:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:40:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1343946330, now seen corresponding path program 16 times [2020-07-21 00:40:53,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:40:53,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850524344] [2020-07-21 00:40:53,507 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 [2020-07-21 00:40:53,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:40:53,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:40:53,651 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 144 conjunts are in the unsatisfiable core [2020-07-21 00:40:53,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:40:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 202 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-07-21 00:40:58,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:40:59,723 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:40:59,937 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:00,063 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:00,230 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 00:41:00,451 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:00,587 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:00,757 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 00:41:00,976 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:01,103 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:01,272 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 00:41:01,486 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:01,611 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:01,951 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:02,687 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:41:02,890 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:03,015 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:03,177 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 00:41:03,398 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:03,527 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:03,698 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 00:41:03,922 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:04,056 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:04,439 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:04,440 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:41:05,157 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:41:05,372 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:05,496 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:05,659 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 00:41:05,870 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:05,992 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 00:41:06,379 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:06,380 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:06,380 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:06,381 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:07,098 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 00:41:07,310 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:07,435 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:07,943 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:07,948 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:41:07,949 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:41:09,015 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:09,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:41:09,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:41:09,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:41:09,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:41:11,383 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:11,573 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:11,687 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:11,845 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:12,019 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:12,123 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:12,260 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:12,643 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:13,027 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:14,484 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:14,854 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:15,269 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:15,655 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:16,036 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:16,727 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 00:41:16,728 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-07-21 00:41:17,903 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 00:41:18,170 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:18,274 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:18,446 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:18,685 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:41:18,831 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:41:19,028 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:19,274 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:19,429 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:19,644 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:19,874 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:20,026 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:20,242 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:20,493 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:20,626 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:23,281 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:23,285 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:23,286 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:41:23,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:41:24,905 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-07-21 00:41:28,213 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 00:41:28,488 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:28,607 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:28,768 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:29,192 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:29,593 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:30,432 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 00:41:30,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850524344] [2020-07-21 00:41:30,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:41:30,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-07-21 00:41:30,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015398793] [2020-07-21 00:41:30,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 00:41:30,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:41:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 00:41:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2259, Unknown=1, NotChecked=0, Total=2450 [2020-07-21 00:41:30,438 INFO L87 Difference]: Start difference. First operand 85 states and 112 transitions. Second operand 26 states. [2020-07-21 00:41:31,193 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:41:31,863 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-07-21 00:41:32,280 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2020-07-21 00:41:32,829 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2020-07-21 00:41:33,282 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-07-21 00:41:33,973 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 00:41:34,422 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-07-21 00:41:34,849 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 00:41:35,271 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-07-21 00:41:35,839 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 00:41:36,274 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-07-21 00:41:36,843 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 00:41:37,286 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-07-21 00:41:39,103 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:41:39,633 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:41:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:41:39,636 INFO L93 Difference]: Finished difference Result 93 states and 118 transitions. [2020-07-21 00:41:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 00:41:39,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 93 [2020-07-21 00:41:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:41:39,637 INFO L225 Difference]: With dead ends: 93 [2020-07-21 00:41:39,637 INFO L226 Difference]: Without dead ends: 89 [2020-07-21 00:41:39,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=469, Invalid=3690, Unknown=1, NotChecked=0, Total=4160 [2020-07-21 00:41:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-21 00:41:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-07-21 00:41:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 00:41:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-21 00:41:39,645 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 93 [2020-07-21 00:41:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:41:39,646 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-21 00:41:39,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 00:41:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-21 00:41:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 00:41:39,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:41:39,647 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:41:39,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:41:39,861 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:41:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:41:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash -173240844, now seen corresponding path program 17 times [2020-07-21 00:41:39,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:41:39,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323767637] [2020-07-21 00:41:39,863 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 [2020-07-21 00:41:40,014 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:41:40,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:41:40,018 WARN L261 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 193 conjunts are in the unsatisfiable core [2020-07-21 00:41:40,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:41:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 9 proven. 361 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-07-21 00:41:45,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:41:46,016 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:46,415 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:46,587 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:46,692 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:46,840 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:47,012 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:47,117 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:47,264 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:47,435 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:47,540 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:47,691 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:47,866 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:48,118 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:48,290 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:48,393 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:48,542 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:48,816 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:48,967 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:49,241 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:49,390 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:50,053 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:50,806 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:51,193 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:51,585 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:51,854 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:41:52,001 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:52,394 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:52,815 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:53,202 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:53,588 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:54,294 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:54,295 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:41:55,342 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:55,753 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:41:56,172 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:56,581 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:56,980 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:57,372 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:57,771 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:41:58,458 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:58,458 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:58,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:58,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:41:59,337 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:59,442 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:41:59,621 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:41:59,877 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:42:00,033 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:42:00,244 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:00,350 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:42:00,511 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:00,670 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:00,890 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:01,329 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:01,604 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:01,823 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:02,071 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:02,225 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:02,444 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:02,706 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:02,862 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:03,560 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:42:03,566 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:03,567 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:42:04,886 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:05,280 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:05,687 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:06,092 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:06,364 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:06,514 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:06,691 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:06,800 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:07,409 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:42:07,416 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:07,417 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:07,418 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:07,418 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:08,711 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:42:08,831 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:42:09,004 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:09,249 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:42:09,398 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:42:09,616 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:09,864 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:10,018 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:10,202 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:10,406 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:10,526 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:10,713 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:10,933 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:11,068 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:11,697 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:42:11,703 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:11,704 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:11,704 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:11,705 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:12,750 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:13,158 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:13,555 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:14,308 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:14,309 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:14,309 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:14,310 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:15,120 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:15,501 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:15,676 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:15,783 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:16,300 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:16,301 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:16,302 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:16,302 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:17,168 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:17,952 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:17,953 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:17,953 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:17,954 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:19,239 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:19,240 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:42:21,278 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:21,449 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:42:21,698 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:21,874 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:21,981 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:22,131 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:22,536 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:22,937 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:24,603 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:24,982 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:25,248 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:25,397 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:25,573 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:25,681 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:25,829 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:26,004 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:26,110 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:26,720 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:42:26,721 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:42:28,367 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:28,766 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:29,158 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:42:30,060 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:30,064 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:30,071 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:30,077 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:42:30,078 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 00:42:30,926 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 00:42:32,043 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:42:32,434 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:42:32,707 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:42:33,444 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 00:42:33,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323767637] [2020-07-21 00:42:33,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:42:33,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-07-21 00:42:33,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224247555] [2020-07-21 00:42:33,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 00:42:33,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:42:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 00:42:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3454, Unknown=0, NotChecked=0, Total=3660 [2020-07-21 00:42:33,450 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 28 states. [2020-07-21 00:42:34,649 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:42:35,529 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:42:36,105 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:42:36,853 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:42:37,486 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:38,290 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:38,764 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:39,214 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:39,665 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:40,351 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:40,950 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:41,977 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:43,028 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:44,318 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:45,178 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:46,270 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:46,870 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:47,616 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:42:48,234 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:42:50,450 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:42:51,420 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:42:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:42:51,424 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2020-07-21 00:42:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 00:42:51,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 121 [2020-07-21 00:42:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:42:51,425 INFO L225 Difference]: With dead ends: 99 [2020-07-21 00:42:51,425 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 00:42:51,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 15 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=668, Invalid=6138, Unknown=0, NotChecked=0, Total=6806 [2020-07-21 00:42:51,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 00:42:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2020-07-21 00:42:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-21 00:42:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2020-07-21 00:42:51,436 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 121 [2020-07-21 00:42:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:42:51,437 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2020-07-21 00:42:51,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 00:42:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2020-07-21 00:42:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 00:42:51,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:42:51,439 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:42:51,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:42:51,648 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:42:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:42:51,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1022743187, now seen corresponding path program 18 times [2020-07-21 00:42:51,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:42:51,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014491387] [2020-07-21 00:42:51,650 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:42:51,831 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:42:51,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:42:51,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 205 conjunts are in the unsatisfiable core [2020-07-21 00:42:51,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:42:59,635 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:00,339 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 9 proven. 408 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-07-21 00:43:00,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:43:01,523 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:01,642 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:01,821 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:02,081 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:02,247 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:02,488 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:02,595 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:02,763 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:02,924 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:03,156 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:03,262 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:03,429 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:03,587 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:03,819 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:03,931 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:04,101 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:04,262 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:04,494 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:04,602 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:04,763 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:04,930 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:05,165 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:05,271 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:05,436 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:05,599 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:05,831 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:05,937 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:06,101 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:06,263 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:06,496 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:06,608 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:06,777 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:06,951 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:07,192 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:07,312 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:07,478 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:43:07,640 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:43:08,339 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:09,292 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:09,426 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:09,625 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:09,734 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:09,904 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:10,070 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:10,314 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:10,435 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:10,609 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:10,782 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:11,023 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:11,136 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:11,307 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:11,482 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:11,721 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:11,833 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:12,008 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:12,182 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:12,424 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:12,540 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:12,717 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:12,892 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:13,143 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:13,259 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:13,433 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:13,629 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:13,909 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:14,038 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:14,213 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:14,372 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:14,598 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:14,863 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:15,021 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:15,669 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:15,674 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:15,675 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:15,675 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:15,675 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:16,949 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:17,148 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:17,301 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:17,526 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:17,644 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:17,847 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:18,052 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:18,330 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:18,446 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:18,628 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:18,804 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:19,045 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:19,160 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:19,323 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:19,487 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:19,718 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:19,826 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:19,993 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:20,157 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:20,397 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:20,661 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:20,819 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:21,046 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:21,162 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:21,334 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:21,508 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:22,232 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:22,238 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:22,239 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:22,239 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:22,240 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:23,237 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:23,370 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:23,563 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:23,800 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:23,959 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:24,189 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:24,452 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:24,613 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:24,843 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:25,104 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:25,270 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:25,515 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:25,629 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:25,804 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:25,981 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:26,231 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:26,346 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:26,519 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:26,696 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:26,947 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:27,061 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:27,229 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:27,404 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:28,181 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:28,187 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:28,188 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:28,188 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:28,189 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:29,540 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:29,678 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:29,876 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:29,991 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:30,161 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:30,329 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:30,577 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:30,689 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:30,863 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:31,038 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:31,286 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:31,399 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:31,574 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:31,746 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:31,992 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:32,105 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:32,277 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:32,451 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:32,705 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:32,820 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:32,995 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:33,169 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:33,957 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:33,963 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:33,963 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:43:35,228 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:35,355 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:35,542 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:35,657 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:35,832 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:36,005 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:36,256 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:36,364 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:36,527 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:36,688 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:36,916 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:37,175 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:37,334 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:37,571 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:37,686 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:37,860 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:38,044 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:38,884 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:38,891 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:38,892 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:43:40,047 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:40,185 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:40,385 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:40,492 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:40,664 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:40,833 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:41,085 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:41,206 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:41,384 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:41,557 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:41,806 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:41,921 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:42,097 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:42,264 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:43,072 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:43,079 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:43,079 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:43,080 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:43,080 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:44,115 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:44,241 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:44,426 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:44,685 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:44,851 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:45,082 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:45,191 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:45,356 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:45,530 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:46,360 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:46,367 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:46,367 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:46,368 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:46,368 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:47,607 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:47,735 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:47,926 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:48,186 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:48,341 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:49,222 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:43:49,228 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:49,229 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:49,229 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:49,230 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:50,317 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:50,448 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:51,342 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:51,348 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:43:51,348 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:43:52,208 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 00:43:53,052 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 00:43:54,134 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 00:43:54,456 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:54,595 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:43:54,797 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:54,919 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:43:55,109 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:55,307 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:55,528 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:43:55,645 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:43:55,804 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:55,964 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:56,194 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:56,459 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:56,617 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:56,850 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:57,078 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:57,199 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:57,381 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:57,590 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:57,716 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:43:57,892 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:43:59,562 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:43:59,737 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:43:59,845 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:00,002 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:00,184 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:00,294 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:00,456 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:00,639 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:00,751 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:00,908 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:01,093 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:01,206 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:01,366 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:01,550 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:01,655 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:02,236 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:44:02,237 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:02,886 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:44:03,536 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:03,906 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:04,302 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:04,476 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:04,588 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:04,747 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:04,931 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:05,041 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:05,186 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:05,459 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:06,176 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:06,180 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:06,181 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:06,181 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:44:07,137 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 00:44:08,303 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:08,475 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:08,711 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:09,126 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:09,314 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:09,427 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:10,231 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 00:44:10,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014491387] [2020-07-21 00:44:10,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:44:10,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-07-21 00:44:10,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167498712] [2020-07-21 00:44:10,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 00:44:10,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:44:10,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 00:44:10,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3454, Unknown=0, NotChecked=0, Total=3660 [2020-07-21 00:44:10,237 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand 28 states. [2020-07-21 00:44:11,476 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:44:12,334 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:44:12,884 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:44:13,477 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:44:14,270 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:15,060 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:15,862 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:16,454 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:17,060 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:17,664 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:18,460 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:19,063 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:19,862 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:20,481 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:21,263 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:22,189 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:23,071 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:23,716 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:44:24,490 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:44:26,530 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:44:27,312 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 00:44:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:44:27,316 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-07-21 00:44:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 00:44:27,316 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2020-07-21 00:44:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:44:27,318 INFO L225 Difference]: With dead ends: 99 [2020-07-21 00:44:27,318 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 00:44:27,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 137 SyntacticMatches, 17 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=668, Invalid=6138, Unknown=0, NotChecked=0, Total=6806 [2020-07-21 00:44:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 00:44:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2020-07-21 00:44:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-21 00:44:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2020-07-21 00:44:27,326 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 128 [2020-07-21 00:44:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:44:27,326 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2020-07-21 00:44:27,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 00:44:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2020-07-21 00:44:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 00:44:27,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:44:27,327 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] [2020-07-21 00:44:27,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:44:27,528 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:44:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:44:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1182847487, now seen corresponding path program 19 times [2020-07-21 00:44:27,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:44:27,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422311405] [2020-07-21 00:44:27,530 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:44:27,699 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:44:27,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:44:27,703 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 00:44:27,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:44:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 238 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-07-21 00:44:33,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:44:34,097 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:34,267 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:34,377 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:34,545 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:34,730 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:34,846 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:35,006 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:35,192 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:35,306 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:35,467 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:35,660 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:35,772 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:35,937 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:36,126 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:36,239 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:36,400 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:36,588 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:36,702 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:36,868 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:37,055 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:37,167 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:37,332 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:37,518 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:37,631 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:37,802 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:37,988 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:44:38,099 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:44:38,557 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:39,399 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:39,579 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:39,689 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:39,850 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:40,036 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:40,150 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:40,302 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:40,481 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:40,585 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:40,737 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:40,908 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:41,014 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:41,170 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:41,447 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:41,607 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:42,020 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:42,430 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:42,702 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:43,161 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:43,161 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:44:44,237 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:44,642 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:44,917 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:45,080 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:45,268 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:45,382 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:45,541 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:45,729 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:45,832 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:45,989 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:46,270 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:46,416 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:46,598 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:46,843 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:47,014 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:47,119 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:47,614 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:47,615 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:47,616 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:47,616 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:48,413 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:48,595 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:48,700 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:48,855 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:49,035 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:49,141 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:49,296 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:49,474 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:49,579 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:49,730 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:49,902 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:50,012 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:50,168 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:50,357 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:50,473 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:50,637 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:50,827 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:50,940 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:51,454 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:44:51,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:51,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:44:52,572 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:52,752 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:52,862 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:53,023 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:53,215 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:53,336 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:53,498 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:53,686 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:53,801 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:53,964 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:54,155 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:54,272 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:54,436 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:54,623 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:54,742 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:55,271 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:44:55,275 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:55,276 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:44:56,346 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:56,512 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:44:56,754 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:57,142 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:57,491 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:58,133 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:58,133 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:58,134 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:58,134 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:44:58,895 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:44:59,316 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:44:59,616 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:44:59,787 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:44:59,975 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:00,090 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:00,638 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:00,639 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:00,640 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:00,640 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:01,506 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:01,677 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:01,924 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:45:02,768 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:45:02,773 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:02,773 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:02,774 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:02,774 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:03,770 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:03,957 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:04,070 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:04,635 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:04,635 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:45:05,908 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:05,909 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:45:08,120 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:08,302 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:08,414 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:08,578 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:45:08,768 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:45:08,876 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:45:10,541 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:10,722 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:10,835 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:11,489 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:45:11,490 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:12,153 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:45:12,812 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:13,784 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 00:45:13,788 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:13,797 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:13,798 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:45:13,799 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 00:45:13,814 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 38 proven. 380 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-07-21 00:45:13,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422311405] [2020-07-21 00:45:13,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:45:13,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 42] total 58 [2020-07-21 00:45:13,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220814652] [2020-07-21 00:45:13,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-21 00:45:13,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:45:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-21 00:45:13,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3114, Unknown=0, NotChecked=0, Total=3306 [2020-07-21 00:45:13,923 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand 58 states. [2020-07-21 00:45:15,300 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:45:16,379 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:45:17,009 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:45:17,697 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:45:18,673 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:19,845 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:20,731 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:21,882 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 00:45:22,521 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:23,157 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:45:23,750 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:24,412 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:45:25,465 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:26,650 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:27,282 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:28,188 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:28,872 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:29,858 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:30,537 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:31,486 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:32,122 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 00:45:32,977 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:45:33,568 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 00:45:34,479 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:45:35,886 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:45:36,730 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:38,602 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:45:40,298 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:45:41,122 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 00:45:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:45:41,127 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2020-07-21 00:45:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-21 00:45:41,127 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 100 [2020-07-21 00:45:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:45:41,128 INFO L225 Difference]: With dead ends: 111 [2020-07-21 00:45:41,129 INFO L226 Difference]: Without dead ends: 101 [2020-07-21 00:45:41,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 126 SyntacticMatches, 17 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=792, Invalid=7040, Unknown=0, NotChecked=0, Total=7832 [2020-07-21 00:45:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-21 00:45:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2020-07-21 00:45:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-21 00:45:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2020-07-21 00:45:41,143 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 100 [2020-07-21 00:45:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:45:41,144 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2020-07-21 00:45:41,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-21 00:45:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2020-07-21 00:45:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 00:45:41,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:45:41,146 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] [2020-07-21 00:45:41,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:45:41,350 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:45:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:45:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -192564829, now seen corresponding path program 20 times [2020-07-21 00:45:41,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:45:41,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914226619] [2020-07-21 00:45:41,352 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:45:41,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:45:41,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:45:41,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 00:45:41,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:45:45,647 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 4 proven. 237 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-07-21 00:45:46,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:45:47,074 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:47,258 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:47,370 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:47,536 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:45:47,734 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:47,852 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:48,009 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:45:48,188 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:48,298 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:48,454 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:45:48,630 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:45:48,734 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:45:49,113 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:49,863 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:50,032 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:50,282 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:45:50,459 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:50,568 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:50,718 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:45:50,892 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:50,997 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:51,415 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:51,415 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:51,416 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:51,417 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:52,295 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:52,471 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:52,575 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:52,722 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:45:52,900 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:53,016 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:45:53,435 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:53,436 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:53,436 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:53,438 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:54,311 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:54,498 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:54,611 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:55,081 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:55,082 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:55,082 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:55,083 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:55,928 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:45:56,059 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:45:56,740 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:45:56,746 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:56,747 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:56,747 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:56,748 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:45:57,382 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 00:45:58,065 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 00:45:59,164 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:45:59,303 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:45:59,499 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:45:59,751 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:45:59,902 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:00,126 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:46:00,238 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:00,423 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:00,606 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:00,851 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:00,968 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:01,130 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:01,309 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:01,549 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:01,662 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:01,837 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:02,020 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:02,267 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:02,381 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:02,557 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:02,720 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:02,984 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:03,097 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:03,283 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:03,467 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:03,726 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:03,851 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:04,028 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:46:04,204 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:46:05,008 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 00:46:05,832 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 00:46:06,180 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:46:06,330 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:46:06,543 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:46:06,660 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 00:46:06,838 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:07,024 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:07,291 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:46:07,418 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:07,615 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:07,810 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:08,076 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:08,200 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:08,389 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:08,582 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:08,847 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:08,972 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:09,167 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:09,360 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:09,628 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:09,754 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:09,945 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:10,142 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:10,417 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:10,552 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:10,751 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:10,944 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:11,818 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 00:46:11,826 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 00:46:11,827 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 00:46:14,782 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:15,635 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:16,134 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:46:16,342 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:16,466 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:16,650 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:46:16,876 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:17,011 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:17,197 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:17,414 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:17,545 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:17,760 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:17,875 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:18,054 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:18,251 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:18,539 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:18,669 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:18,870 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:19,068 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:22,094 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 00:46:22,101 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 00:46:22,101 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 00:46:22,102 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 00:46:23,483 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 00:46:24,858 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:46:24,999 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 00:46:25,192 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 00:46:25,464 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:25,628 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 00:46:25,869 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 00:46:25,980 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:26,150 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:26,318 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:26,565 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:26,681 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:26,855 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:27,030 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:27,275 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 00:46:27,388 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 00:46:27,571 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:27,747 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 00:46:28,867 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-07-21 00:46:28,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914226619] [2020-07-21 00:46:28,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:46:28,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-07-21 00:46:28,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698661219] [2020-07-21 00:46:28,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 00:46:28,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:46:28,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 00:46:28,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2013, Unknown=2, NotChecked=0, Total=2162 [2020-07-21 00:46:28,875 INFO L87 Difference]: Start difference. First operand 86 states and 113 transitions. Second operand 24 states. [2020-07-21 00:46:32,696 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 00:46:34,023 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 00:46:34,830 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:46:35,664 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 00:46:36,716 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 00:46:37,778 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14