/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 NUM_VARIABLES --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/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:01:33,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:01:33,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:01:33,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:01:33,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:01:33,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:01:33,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:01:33,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:01:33,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:01:33,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:01:33,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:01:33,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:01:33,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:01:33,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:01:33,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:01:33,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:01:33,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:01:33,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:01:33,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:01:33,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:01:33,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:01:33,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:01:33,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:01:33,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:01:33,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 18:01:33,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:01:33,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:01:33,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:01:33,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 18:01:33,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:01:33,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:01:33,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:01:33,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:01:33,608 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:01:33,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:01:33,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:01:33,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:01:33,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:01:33,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:01:33,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:01:33,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:01:33,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:01:33,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:01:33,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:01:33,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:01:33,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:01:33,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:01:33,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:01:33,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:01:33,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:01:33,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:01:33,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:01:33,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:01:33,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:01:33,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:01:33,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:33,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:01:33,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:01:33,613 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 -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 18:01:33,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:01:34,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:01:34,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:01:34,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:01:34,023 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:01:34,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-07-20 18:01:34,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083543c53/bd40877fe73c4a739673b27cdfe457fb/FLAG8e2141b2c [2020-07-20 18:01:34,893 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:01:34,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-07-20 18:01:34,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083543c53/bd40877fe73c4a739673b27cdfe457fb/FLAG8e2141b2c [2020-07-20 18:01:35,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083543c53/bd40877fe73c4a739673b27cdfe457fb [2020-07-20 18:01:35,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:01:35,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:01:35,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:01:35,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:01:35,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:01:35,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf1a8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35, skipping insertion in model container [2020-07-20 18:01:35,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:01:35,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:01:35,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:01:35,529 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:01:35,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:01:35,579 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:01:35,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35 WrapperNode [2020-07-20 18:01:35,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:01:35,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:01:35,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:01:35,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:01:35,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... [2020-07-20 18:01:35,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:01:35,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:01:35,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:01:35,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:01:35,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:01:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:01:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:01:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:01:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:01:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:01:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:01:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:01:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:01:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:01:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 18:01:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:01:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:01:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:01:36,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:01:36,175 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 18:01:36,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:01:36 BoogieIcfgContainer [2020-07-20 18:01:36,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:01:36,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:01:36,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:01:36,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:01:36,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:01:35" (1/3) ... [2020-07-20 18:01:36,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31aef08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:01:36, skipping insertion in model container [2020-07-20 18:01:36,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:01:35" (2/3) ... [2020-07-20 18:01:36,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31aef08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:01:36, skipping insertion in model container [2020-07-20 18:01:36,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:01:36" (3/3) ... [2020-07-20 18:01:36,199 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-07-20 18:01:36,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:01:36,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:01:36,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:01:36,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:01:36,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:01:36,294 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:01:36,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:01:36,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:01:36,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:01:36,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:01:36,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:01:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 18:01:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 18:01:36,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:36,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:36,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:36,353 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-07-20 18:01:36,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:36,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154388090] [2020-07-20 18:01:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:36,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:01:36,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:36,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 18:01:36,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:36,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:01:36,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154388090] [2020-07-20 18:01:36,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:01:36,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 18:01:36,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809883531] [2020-07-20 18:01:36,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 18:01:36,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:36,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 18:01:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 18:01:36,584 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-20 18:01:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:36,645 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-20 18:01:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 18:01:36,650 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-20 18:01:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:36,665 INFO L225 Difference]: With dead ends: 33 [2020-07-20 18:01:36,666 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 18:01:36,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 18:01:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 18:01:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 18:01:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 18:01:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-07-20 18:01:36,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-07-20 18:01:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:36,747 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-07-20 18:01:36,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 18:01:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-07-20 18:01:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 18:01:36,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:36,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:36,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:36,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-07-20 18:01:36,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:36,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154108373] [2020-07-20 18:01:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:37,013 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:01:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 18:01:37,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:37,139 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:01:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:37,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:01:37,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154108373] [2020-07-20 18:01:37,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:01:37,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 18:01:37,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384431101] [2020-07-20 18:01:37,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 18:01:37,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 18:01:37,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 18:01:37,209 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-07-20 18:01:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:37,379 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-07-20 18:01:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 18:01:37,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-20 18:01:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:37,387 INFO L225 Difference]: With dead ends: 26 [2020-07-20 18:01:37,387 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 18:01:37,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 18:01:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 18:01:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-07-20 18:01:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 18:01:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 18:01:37,402 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-07-20 18:01:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:37,402 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 18:01:37,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 18:01:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 18:01:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 18:01:37,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:37,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:37,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:37,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-07-20 18:01:37,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:37,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147227377] [2020-07-20 18:01:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:37,662 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:01:37,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 18:01:37,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:37,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:01:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:37,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147227377] [2020-07-20 18:01:37,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:01:37,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-07-20 18:01:37,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303705918] [2020-07-20 18:01:37,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 18:01:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 18:01:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-20 18:01:37,874 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2020-07-20 18:01:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:38,093 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-07-20 18:01:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 18:01:38,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-07-20 18:01:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:38,095 INFO L225 Difference]: With dead ends: 31 [2020-07-20 18:01:38,096 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 18:01:38,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-20 18:01:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 18:01:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-07-20 18:01:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 18:01:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 18:01:38,106 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-07-20 18:01:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:38,107 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 18:01:38,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 18:01:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 18:01:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 18:01:38,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:38,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:38,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:38,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:38,328 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-07-20 18:01:38,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:38,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712321415] [2020-07-20 18:01:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:38,402 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:01:38,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:38,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 18:01:38,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:38,573 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 18:01:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:38,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:01:38,655 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:01:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:39,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712321415] [2020-07-20 18:01:39,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:01:39,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-20 18:01:39,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983940523] [2020-07-20 18:01:39,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 18:01:39,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 18:01:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-07-20 18:01:39,047 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 17 states. [2020-07-20 18:01:39,613 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-20 18:01:39,792 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2020-07-20 18:01:40,319 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-07-20 18:01:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:40,614 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-07-20 18:01:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 18:01:40,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2020-07-20 18:01:40,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:40,617 INFO L225 Difference]: With dead ends: 46 [2020-07-20 18:01:40,617 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 18:01:40,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-07-20 18:01:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 18:01:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-07-20 18:01:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 18:01:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-20 18:01:40,646 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-20 18:01:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:40,646 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-20 18:01:40,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 18:01:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-20 18:01:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 18:01:40,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:40,648 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:40,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:40,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:40,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1027624830, now seen corresponding path program 2 times [2020-07-20 18:01:40,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:40,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98881196] [2020-07-20 18:01:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:40,890 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:01:40,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:40,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 18:01:40,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 18:01:40,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:01:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 18:01:41,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98881196] [2020-07-20 18:01:41,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:01:41,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-20 18:01:41,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684045491] [2020-07-20 18:01:41,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 18:01:41,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:41,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 18:01:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-20 18:01:41,063 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 10 states. [2020-07-20 18:01:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:41,218 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-07-20 18:01:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 18:01:41,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-20 18:01:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:41,225 INFO L225 Difference]: With dead ends: 43 [2020-07-20 18:01:41,225 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 18:01:41,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-20 18:01:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 18:01:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 18:01:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 18:01:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-07-20 18:01:41,237 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2020-07-20 18:01:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:41,237 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-07-20 18:01:41,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 18:01:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-07-20 18:01:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 18:01:41,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:41,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:41,443 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -490417350, now seen corresponding path program 3 times [2020-07-20 18:01:41,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:41,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365405173] [2020-07-20 18:01:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:41,484 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:01:41,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:41,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 18:01:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:41,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 18:01:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:41,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:01:41,818 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:01:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:42,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365405173] [2020-07-20 18:01:42,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:01:42,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2020-07-20 18:01:42,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715335294] [2020-07-20 18:01:42,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 18:01:42,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:42,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 18:01:42,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-07-20 18:01:42,849 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2020-07-20 18:01:43,963 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-07-20 18:01:44,184 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-07-20 18:01:44,347 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-07-20 18:01:44,572 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-07-20 18:01:45,030 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-07-20 18:01:45,300 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-20 18:01:45,517 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:01:45,780 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-07-20 18:01:46,000 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-20 18:01:46,208 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-07-20 18:01:46,458 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-20 18:01:46,723 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-07-20 18:01:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:01:47,136 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-07-20 18:01:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-20 18:01:47,137 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2020-07-20 18:01:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:01:47,139 INFO L225 Difference]: With dead ends: 62 [2020-07-20 18:01:47,139 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 18:01:47,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=578, Invalid=2392, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 18:01:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 18:01:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 18:01:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 18:01:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-07-20 18:01:47,185 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 29 [2020-07-20 18:01:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:01:47,189 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-07-20 18:01:47,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 18:01:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-07-20 18:01:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 18:01:47,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:01:47,194 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:01:47,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:47,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:01:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:01:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2033682622, now seen corresponding path program 4 times [2020-07-20 18:01:47,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:01:47,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992601167] [2020-07-20 18:01:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:01:47,469 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:01:47,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:01:47,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 18:01:47,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:01:48,079 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 18:01:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:48,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:01:48,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:01:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:01:51,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992601167] [2020-07-20 18:01:51,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:01:51,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 53 [2020-07-20 18:01:51,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187759057] [2020-07-20 18:01:51,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 18:01:51,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:01:51,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 18:01:51,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 18:01:51,247 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2020-07-20 18:01:53,280 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 18:01:53,711 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-20 18:01:53,924 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-07-20 18:01:54,362 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-20 18:01:54,836 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-20 18:01:55,128 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:01:55,421 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:01:55,683 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:01:55,952 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:01:56,209 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:01:56,534 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:01:56,845 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-20 18:01:57,149 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:01:57,401 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:01:57,691 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:01:57,995 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:01:58,332 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-20 18:01:58,634 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-07-20 18:01:58,930 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-20 18:01:59,378 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-20 18:01:59,821 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:02:00,106 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:02:00,452 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:02:00,774 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-20 18:02:01,115 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:02:01,417 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-20 18:02:01,754 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:02:02,092 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:02:02,472 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:02:02,840 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-07-20 18:02:03,182 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-20 18:02:03,482 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-07-20 18:02:03,934 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-07-20 18:02:04,268 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-20 18:02:04,604 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-07-20 18:02:04,970 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-07-20 18:02:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:02:05,615 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-07-20 18:02:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-20 18:02:05,618 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2020-07-20 18:02:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:02:05,620 INFO L225 Difference]: With dead ends: 114 [2020-07-20 18:02:05,620 INFO L226 Difference]: Without dead ends: 102 [2020-07-20 18:02:05,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=2424, Invalid=9786, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 18:02:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-20 18:02:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-20 18:02:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-20 18:02:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-07-20 18:02:05,647 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 53 [2020-07-20 18:02:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:02:05,647 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-07-20 18:02:05,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 18:02:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-07-20 18:02:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 18:02:05,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:02:05,652 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:02:05,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:02:05,863 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:02:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:02:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1181026478, now seen corresponding path program 5 times [2020-07-20 18:02:05,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:02:05,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469763468] [2020-07-20 18:02:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:02:05,982 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:02:05,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:02:05,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-20 18:02:06,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:02:08,906 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 18:02:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:02:09,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:02:09,449 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:02:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:02:24,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469763468] [2020-07-20 18:02:24,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:02:24,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 101 [2020-07-20 18:02:24,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049064637] [2020-07-20 18:02:24,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-20 18:02:24,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:02:24,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-20 18:02:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7951, Unknown=0, NotChecked=0, Total=10100 [2020-07-20 18:02:24,065 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2020-07-20 18:02:31,988 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-20 18:02:32,561 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 18:02:33,154 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 18:02:33,687 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-20 18:02:34,179 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-07-20 18:02:34,672 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-07-20 18:02:35,125 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-20 18:02:35,525 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-20 18:02:36,005 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-20 18:02:36,582 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:02:37,234 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:37,758 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:02:38,378 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:38,900 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:39,544 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:40,192 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-20 18:02:40,874 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:41,461 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:02:42,149 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:02:42,753 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:02:43,442 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:02:44,158 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-20 18:02:44,853 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:02:45,455 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-20 18:02:46,211 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:46,756 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:47,449 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:48,106 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:02:48,799 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:49,363 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:02:50,012 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:50,690 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:51,473 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:52,451 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:02:53,224 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:53,892 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:02:54,736 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:55,424 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:02:56,254 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:57,112 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:02:57,969 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:02:58,760 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:02:59,673 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:00,460 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:01,372 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:02,291 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:03:03,254 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:04,062 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:03:05,012 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:05,858 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:06,886 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:08,113 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:03:09,176 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:10,100 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:03:11,111 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:11,811 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:12,666 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:13,579 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:03:14,533 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:15,338 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:03:16,450 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:17,409 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:18,491 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:19,928 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:03:21,108 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:03:22,083 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:03:23,141 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:24,106 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:03:25,240 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:03:26,520 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-20 18:03:27,641 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:03:28,635 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:03:29,871 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:03:30,787 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:03:31,845 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:03:33,074 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-20 18:03:34,381 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:03:35,446 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-20 18:03:36,770 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:03:37,942 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:03:39,235 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:03:40,831 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-07-20 18:03:42,059 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-20 18:03:43,143 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-07-20 18:03:44,541 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-07-20 18:03:45,783 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-20 18:03:47,162 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-07-20 18:03:48,634 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-07-20 18:03:49,276 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 18:03:49,753 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-20 18:03:50,560 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 18:03:51,419 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-20 18:03:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:03:51,489 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2020-07-20 18:03:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-07-20 18:03:51,496 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2020-07-20 18:03:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:03:51,501 INFO L225 Difference]: With dead ends: 218 [2020-07-20 18:03:51,501 INFO L226 Difference]: Without dead ends: 198 [2020-07-20 18:03:51,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12145 ImplicationChecksByTransitivity, 95.3s TimeCoverageRelationStatistics Valid=10004, Invalid=39502, Unknown=0, NotChecked=0, Total=49506 [2020-07-20 18:03:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-07-20 18:03:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-07-20 18:03:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-20 18:03:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2020-07-20 18:03:51,550 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 101 [2020-07-20 18:03:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:03:51,551 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2020-07-20 18:03:51,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-20 18:03:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2020-07-20 18:03:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-20 18:03:51,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:03:51,556 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:03:51,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:03:51,772 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:03:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:03:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1984747378, now seen corresponding path program 6 times [2020-07-20 18:03:51,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:03:51,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826457111] [2020-07-20 18:03:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:03:51,948 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:03:51,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:03:51,956 WARN L261 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 194 conjunts are in the unsatisfiable core [2020-07-20 18:03:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:04:14,324 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 18:04:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:04:15,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:04:16,623 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:04:19,605 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-07-20 18:04:20,441 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 18:04:21,298 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 18:04:22,179 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 18:04:23,032 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 18:04:23,926 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 18:04:25,502 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 18:04:26,376 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:27,433 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:28,488 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:29,551 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:30,690 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:31,804 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:32,919 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:33,951 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:35,046 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:36,107 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:37,215 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:38,255 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:39,452 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:40,725 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:41,947 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:43,217 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:44,563 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:45,794 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:47,045 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:48,484 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:49,777 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:51,119 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:52,594 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:53,885 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:55,191 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:56,726 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:58,130 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:04:59,533 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:01,158 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:02,607 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:04,103 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:05,603 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:07,007 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:08,361 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:09,882 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:11,318 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:12,865 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:14,739 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:16,412 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:18,010 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:19,954 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:21,561 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:23,224 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:25,200 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:26,983 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:28,749 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:30,767 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:32,568 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:34,323 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:36,416 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:38,260 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:39,909 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:41,925 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:43,517 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:45,314 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:47,427 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:49,149 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:50,886 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:53,003 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:54,718 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:56,265 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:05:58,447 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:00,306 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:02,152 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:04,481 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:06,405 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:08,247 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:10,226 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:11,926 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:13,882 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:16,453 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:18,611 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:20,809 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:23,590 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:25,879 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:28,122 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:30,996 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:33,371 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:35,708 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:38,727 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:41,133 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:43,571 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:46,381 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:48,653 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:51,091 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 18:06:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:06:51,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826457111] [2020-07-20 18:06:51,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:06:51,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 197 [2020-07-20 18:06:51,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672213265] [2020-07-20 18:06:51,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2020-07-20 18:06:51,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:06:51,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2020-07-20 18:06:51,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8621, Invalid=29991, Unknown=0, NotChecked=0, Total=38612 [2020-07-20 18:06:51,451 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2020-07-20 18:08:43,115 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2020-07-20 18:08:44,902 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-20 18:08:47,977 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 18:08:50,574 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 18:08:52,609 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-20 18:08:55,001 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-07-20 18:08:56,777 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-07-20 18:08:58,956 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-20 18:09:01,342 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-20 18:09:04,077 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-20 18:09:07,183 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:09:09,753 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:09:12,210 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:09:14,950 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:09:17,825 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:09:20,893 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:09:24,408 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-20 18:09:27,045 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:09:29,397 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:09:32,551 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:09:35,081 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:09:38,292 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:09:41,631 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-20 18:09:44,465 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:09:47,008 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-20 18:09:49,921 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:09:52,258 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:09:55,044 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:09:57,924 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:10:00,388 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:02,501 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:10:04,976 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:07,188 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:09,566 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:12,352 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:10:15,204 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:17,595 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:10:20,548 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:22,822 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:25,321 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:28,234 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:10:30,967 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:33,309 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:10:36,237 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:38,579 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:41,399 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:44,574 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:10:47,361 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:10:49,832 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:10:52,880 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:55,263 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:10:57,794 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:00,801 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:11:02,885 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:04,777 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:11:07,437 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:09,589 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:12,050 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:15,296 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:11:17,813 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:20,053 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:11:22,440 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:24,810 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:27,716 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:31,086 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:11:33,734 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:36,223 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:11:39,599 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:42,041 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:11:44,832 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:49,049 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:11:52,146 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:11:54,927 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:11:57,975 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:00,817 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:03,689 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:07,576 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:12:10,289 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:12,800 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:12:16,204 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:19,558 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:23,114 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:27,129 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:12:30,226 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:32,838 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:12:36,130 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:39,232 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:12:42,699 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:46,559 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:12:50,243 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:12:53,345 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:12:56,868 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:00,043 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:03,630 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:07,156 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:13:09,845 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:12,042 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:13:14,120 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:15,935 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:17,808 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:20,187 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:13:21,833 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:23,375 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:13:25,233 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:26,740 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:28,385 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:30,637 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:13:32,222 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:33,516 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:13:35,178 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:36,661 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:38,503 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:40,536 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:13:42,433 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:43,997 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:13:45,866 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:47,539 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:49,285 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:51,391 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:13:53,004 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:13:54,512 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:13:56,343 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:58,008 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:13:59,796 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:01,996 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:14:03,896 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:05,528 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:14:07,370 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:09,092 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:11,000 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:13,240 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:14:14,962 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:16,534 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:14:18,269 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:19,773 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:21,478 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:23,820 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:14:25,381 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:26,737 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:14:28,806 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:30,357 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:32,221 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:34,591 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:14:36,692 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:38,352 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:14:40,168 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:41,898 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:43,811 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:46,212 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:14:48,324 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:50,081 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:14:52,332 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:53,937 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:14:55,752 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:14:58,091 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:15:00,283 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:15:02,152 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:15:04,216 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:15:06,119 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:15:08,175 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:15:10,653 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-20 18:15:12,405 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-20 18:15:13,955 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:15:15,972 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:15:17,740 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-20 18:15:19,812 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:15:22,443 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-20 18:15:24,392 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:15:26,126 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-20 18:15:28,314 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:15:30,236 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-20 18:15:32,332 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:15:34,897 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-20 18:15:37,203 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-20 18:15:39,043 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-20 18:15:41,093 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:15:43,028 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-20 18:15:45,202 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-20 18:15:48,068 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39