/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:41:20,694 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 10:41:20,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:41:20,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:41:20,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:41:20,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:41:20,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:41:20,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:41:20,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:41:20,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:41:20,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:41:20,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:41:20,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:41:20,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:41:20,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:41:20,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:41:20,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:41:20,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:41:20,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:41:20,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:41:20,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:41:20,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:41:20,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:41:20,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:41:20,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:41:20,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:41:20,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 10:41:20,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:41:20,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:41:20,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:41:20,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:41:20,801 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:41:20,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:41:20,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:41:20,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:41:20,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:41:20,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:41:20,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:41:20,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:41:20,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:41:20,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:41:20,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:41:20,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:41:20,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:41:20,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:41:20,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:41:20,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:41:20,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:41:20,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:41:20,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:41:20,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:41:20,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:41:20,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:41:20,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:20,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:41:20,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:41:20,805 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 -> NOT_INCREMENTALLY [2020-07-21 10:41:21,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:41:21,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:41:21,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:41:21,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:41:21,127 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:41:21,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 10:41:21,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d487c4301/2a0aa119a9644da992600452593a10ae/FLAGeebb3ee9e [2020-07-21 10:41:21,697 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:41:21,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 10:41:21,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d487c4301/2a0aa119a9644da992600452593a10ae/FLAGeebb3ee9e [2020-07-21 10:41:22,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d487c4301/2a0aa119a9644da992600452593a10ae [2020-07-21 10:41:22,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:41:22,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:41:22,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:41:22,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:41:22,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:41:22,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3932551c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22, skipping insertion in model container [2020-07-21 10:41:22,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:41:22,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:41:22,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:41:22,276 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:41:22,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:41:22,308 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:41:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22 WrapperNode [2020-07-21 10:41:22,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:41:22,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:41:22,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:41:22,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:41:22,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... [2020-07-21 10:41:22,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:41:22,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:41:22,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:41:22,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:41:22,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:41:22,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:41:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:41:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-21 10:41:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:41:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:41:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:41:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-21 10:41:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:41:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:41:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:41:22,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:41:22,748 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 10:41:22,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:41:22 BoogieIcfgContainer [2020-07-21 10:41:22,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:41:22,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:41:22,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:41:22,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:41:22,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:41:22" (1/3) ... [2020-07-21 10:41:22,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd45303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:41:22, skipping insertion in model container [2020-07-21 10:41:22,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:41:22" (2/3) ... [2020-07-21 10:41:22,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd45303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:41:22, skipping insertion in model container [2020-07-21 10:41:22,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:41:22" (3/3) ... [2020-07-21 10:41:22,777 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-21 10:41:22,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:41:22,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:41:22,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:41:22,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:41:22,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:41:22,845 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:41:22,845 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:41:22,845 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:41:22,845 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:41:22,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:41:22,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:41:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 10:41:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 10:41:22,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:41:22,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:41:22,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:41:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:41:22,878 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-07-21 10:41:22,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:41:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654345458] [2020-07-21 10:41:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:41:22,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 10:41:22,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:41:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 10:41:23,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:41:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 10:41:23,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654345458] [2020-07-21 10:41:23,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:41:23,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 10:41:23,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752550971] [2020-07-21 10:41:23,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:41:23,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:41:23,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:41:23,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:41:23,199 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-21 10:41:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:41:23,334 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-07-21 10:41:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:41:23,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-21 10:41:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:41:23,347 INFO L225 Difference]: With dead ends: 41 [2020-07-21 10:41:23,348 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 10:41:23,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:41:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 10:41:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 10:41:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 10:41:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-07-21 10:41:23,404 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2020-07-21 10:41:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:41:23,405 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-07-21 10:41:23,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:41:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-07-21 10:41:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 10:41:23,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:41:23,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:41:23,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:23,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:41:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:41:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-07-21 10:41:23,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:41:23,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871794178] [2020-07-21 10:41:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:41:23,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 10:41:23,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:41:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 10:41:23,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:41:23,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871794178] [2020-07-21 10:41:23,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:41:23,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:41:23,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605386047] [2020-07-21 10:41:23,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:41:23,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:41:23,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:41:23,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:41:23,714 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 5 states. [2020-07-21 10:41:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:41:23,807 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-21 10:41:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:41:23,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 10:41:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:41:23,811 INFO L225 Difference]: With dead ends: 29 [2020-07-21 10:41:23,811 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 10:41:23,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:41:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 10:41:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 10:41:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 10:41:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-07-21 10:41:23,821 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2020-07-21 10:41:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:41:23,822 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-07-21 10:41:23,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:41:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-07-21 10:41:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 10:41:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:41:23,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:41:24,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:24,039 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:41:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:41:24,041 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-07-21 10:41:24,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:41:24,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046588413] [2020-07-21 10:41:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:41:24,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-21 10:41:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:41:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 10:41:24,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:41:24,583 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:24,590 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:41:24,760 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:24,767 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:24,773 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:24,779 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:24,784 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:24,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:24,790 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:24,791 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,189 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:41:25,194 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,203 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,206 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:25,209 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:25,218 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:25,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:25,229 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:25,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:25,240 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 10:41:25,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046588413] [2020-07-21 10:41:25,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:41:25,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 22 [2020-07-21 10:41:25,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353986932] [2020-07-21 10:41:25,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 10:41:25,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:41:25,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 10:41:25,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-07-21 10:41:25,282 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 22 states. [2020-07-21 10:41:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:41:25,716 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-21 10:41:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 10:41:25,716 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2020-07-21 10:41:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:41:25,718 INFO L225 Difference]: With dead ends: 40 [2020-07-21 10:41:25,718 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 10:41:25,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-07-21 10:41:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 10:41:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-07-21 10:41:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 10:41:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-21 10:41:25,732 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 37 [2020-07-21 10:41:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:41:25,733 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-21 10:41:25,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 10:41:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-07-21 10:41:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 10:41:25,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:41:25,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:41:25,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:25,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:41:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:41:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 1 times [2020-07-21 10:41:25,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:41:25,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651007065] [2020-07-21 10:41:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:41:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 10:41:25,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:41:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-21 10:41:26,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:41:26,137 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:26,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 10:41:26,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651007065] [2020-07-21 10:41:26,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:41:26,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 10:41:26,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042262319] [2020-07-21 10:41:26,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 10:41:26,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:41:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 10:41:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:41:26,178 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 8 states. [2020-07-21 10:41:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:41:26,271 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-07-21 10:41:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:41:26,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-07-21 10:41:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:41:26,274 INFO L225 Difference]: With dead ends: 39 [2020-07-21 10:41:26,274 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 10:41:26,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 10:41:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 10:41:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 10:41:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 10:41:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2020-07-21 10:41:26,286 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 43 [2020-07-21 10:41:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:41:26,286 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2020-07-21 10:41:26,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 10:41:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2020-07-21 10:41:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 10:41:26,288 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:41:26,288 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:41:26,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:26,503 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:41:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:41:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-07-21 10:41:26,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:41:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4694485] [2020-07-21 10:41:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:41:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:41:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 10:41:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:41:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 10:41:26,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:41:27,132 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:27,348 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:27,349 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:27,349 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:27,351 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:27,352 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:41:27,516 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:41:27,517 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:41:27,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:27,519 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:27,990 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:27,992 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:27,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:27,994 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:27,995 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:27,997 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:27,999 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,001 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,004 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:28,006 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,007 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,007 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,009 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,011 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,012 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,014 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,017 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:41:28,019 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,019 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:41:28,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,025 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:28,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:41:30,060 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) .cse0 (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (let ((.cse2 (div .cse1 (- 2)))) (or (<= 3 (div (+ .cse1 (- 1)) (- 2))) (< .cse2 1) (< .cse2 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 2)) 1)))))) (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div .cse3 (- 2)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)))))) is different from false [2020-07-21 10:41:32,088 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) (forall ((v_prenex_3 Int)) (let ((.cse2 (* v_prenex_3 (- 1)))) (let ((.cse1 (div .cse2 (- 2)))) (or (< .cse1 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 2)) 1)) (<= 3 (div (+ .cse2 (- 1)) (- 2))) (< .cse1 1))))) .cse0 (forall ((v_prenex_4 Int)) (let ((.cse3 (* v_prenex_4 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3) (< (div .cse3 (- 2)) 1)))))) is different from false [2020-07-21 10:41:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 8 not checked. [2020-07-21 10:41:32,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4694485] [2020-07-21 10:41:32,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:41:32,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 37 [2020-07-21 10:41:32,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147761982] [2020-07-21 10:41:32,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-21 10:41:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:41:32,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-21 10:41:32,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1070, Unknown=2, NotChecked=134, Total=1332 [2020-07-21 10:41:32,175 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand 37 states. [2020-07-21 10:42:23,189 WARN L193 SmtUtils]: Spent 50.69 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-07-21 10:42:29,025 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-21 10:42:30,032 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 10:42:30,781 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 10:42:31,658 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:42:32,167 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 10:42:35,082 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:42:35,426 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:42:35,814 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:42:36,350 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-07-21 10:42:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:42:37,060 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2020-07-21 10:42:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 10:42:37,069 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 44 [2020-07-21 10:42:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:42:37,071 INFO L225 Difference]: With dead ends: 71 [2020-07-21 10:42:37,071 INFO L226 Difference]: Without dead ends: 62 [2020-07-21 10:42:37,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=299, Invalid=2257, Unknown=2, NotChecked=198, Total=2756 [2020-07-21 10:42:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-21 10:42:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-07-21 10:42:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 10:42:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 74 transitions. [2020-07-21 10:42:37,089 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 74 transitions. Word has length 44 [2020-07-21 10:42:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:42:37,089 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 74 transitions. [2020-07-21 10:42:37,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-21 10:42:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 74 transitions. [2020-07-21 10:42:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 10:42:37,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:42:37,092 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:42:37,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:37,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:42:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:42:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1427454557, now seen corresponding path program 2 times [2020-07-21 10:42:37,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:42:37,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523707857] [2020-07-21 10:42:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:42:37,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 10:42:37,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:42:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-07-21 10:42:37,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:42:38,506 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:42:38,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:42:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-07-21 10:42:38,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523707857] [2020-07-21 10:42:38,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:42:38,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 10:42:38,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348781374] [2020-07-21 10:42:38,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 10:42:38,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:42:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 10:42:38,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:42:38,682 INFO L87 Difference]: Start difference. First operand 47 states and 74 transitions. Second operand 8 states. [2020-07-21 10:42:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:42:39,115 INFO L93 Difference]: Finished difference Result 53 states and 83 transitions. [2020-07-21 10:42:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:42:39,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-07-21 10:42:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:42:39,124 INFO L225 Difference]: With dead ends: 53 [2020-07-21 10:42:39,124 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 10:42:39,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 10:42:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 10:42:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-21 10:42:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 10:42:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-07-21 10:42:39,137 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 64 [2020-07-21 10:42:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:42:39,137 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-07-21 10:42:39,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 10:42:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-07-21 10:42:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 10:42:39,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:42:39,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:42:39,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:39,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:42:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:42:39,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 4 times [2020-07-21 10:42:39,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:42:39,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406121061] [2020-07-21 10:42:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:42:39,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 10:42:39,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:42:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 10:42:41,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:42:42,032 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:42:42,033 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:42:42,301 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2020-07-21 10:42:42,955 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:42:42,956 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:42:42,957 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:42:42,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:42:42,964 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:42:44,104 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:42:45,604 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:42:45,605 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:42:46,294 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:42:46,295 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:42:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 10:42:46,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406121061] [2020-07-21 10:42:46,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:42:46,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 34 [2020-07-21 10:42:46,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876913645] [2020-07-21 10:42:46,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-21 10:42:46,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:42:46,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-21 10:42:46,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2020-07-21 10:42:46,877 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 34 states. [2020-07-21 10:42:47,368 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 10:42:47,985 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:42:48,422 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:42:48,812 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:42:49,082 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:42:49,664 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:42:50,232 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:42:52,052 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:42:52,756 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:42:53,667 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:42:54,089 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-07-21 10:42:55,637 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2020-07-21 10:42:57,147 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:42:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:42:57,386 INFO L93 Difference]: Finished difference Result 86 states and 140 transitions. [2020-07-21 10:42:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 10:42:57,395 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2020-07-21 10:42:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:42:57,398 INFO L225 Difference]: With dead ends: 86 [2020-07-21 10:42:57,398 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 10:42:57,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=484, Invalid=2822, Unknown=0, NotChecked=0, Total=3306 [2020-07-21 10:42:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 10:42:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-07-21 10:42:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 10:42:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 97 transitions. [2020-07-21 10:42:57,413 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 97 transitions. Word has length 44 [2020-07-21 10:42:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:42:57,414 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 97 transitions. [2020-07-21 10:42:57,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-21 10:42:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 97 transitions. [2020-07-21 10:42:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 10:42:57,417 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:42:57,421 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:42:57,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:57,636 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:42:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:42:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2085431083, now seen corresponding path program 3 times [2020-07-21 10:42:57,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:42:57,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023944990] [2020-07-21 10:42:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:42:57,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 10:42:57,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:42:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-07-21 10:42:57,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:42:57,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023944990] [2020-07-21 10:42:57,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:42:57,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:42:57,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699386033] [2020-07-21 10:42:57,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:42:57,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:42:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:42:57,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:42:57,808 INFO L87 Difference]: Start difference. First operand 56 states and 97 transitions. Second operand 5 states. [2020-07-21 10:42:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:42:58,135 INFO L93 Difference]: Finished difference Result 90 states and 160 transitions. [2020-07-21 10:42:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:42:58,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-21 10:42:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:42:58,149 INFO L225 Difference]: With dead ends: 90 [2020-07-21 10:42:58,149 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 10:42:58,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:42:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 10:42:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-21 10:42:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 10:42:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2020-07-21 10:42:58,163 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 94 transitions. Word has length 78 [2020-07-21 10:42:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:42:58,164 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 94 transitions. [2020-07-21 10:42:58,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:42:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 94 transitions. [2020-07-21 10:42:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 10:42:58,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:42:58,167 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:42:58,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:58,382 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:42:58,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:42:58,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1871495863, now seen corresponding path program 4 times [2020-07-21 10:42:58,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:42:58,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686239592] [2020-07-21 10:42:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:42:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:42:58,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 10:42:58,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:42:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 10:42:58,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:42:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 10:42:59,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686239592] [2020-07-21 10:42:59,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:42:59,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-21 10:42:59,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243856120] [2020-07-21 10:42:59,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 10:42:59,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:42:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 10:42:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:42:59,928 INFO L87 Difference]: Start difference. First operand 56 states and 94 transitions. Second operand 7 states. [2020-07-21 10:43:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:43:00,263 INFO L93 Difference]: Finished difference Result 82 states and 129 transitions. [2020-07-21 10:43:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:43:00,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-07-21 10:43:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:43:00,274 INFO L225 Difference]: With dead ends: 82 [2020-07-21 10:43:00,274 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 10:43:00,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 10:43:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 10:43:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-07-21 10:43:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 10:43:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-07-21 10:43:00,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 64 [2020-07-21 10:43:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:43:00,284 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-07-21 10:43:00,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 10:43:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-07-21 10:43:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 10:43:00,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:43:00,285 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:43:00,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:00,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:43:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:43:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash -272057979, now seen corresponding path program 5 times [2020-07-21 10:43:00,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:43:00,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245350912] [2020-07-21 10:43:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:43:00,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 81 conjunts are in the unsatisfiable core [2020-07-21 10:43:00,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:43:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 10:43:02,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:43:03,926 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:04,269 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:43:04,618 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:43:05,102 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:05,417 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:43:06,316 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:06,684 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:43:07,206 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:07,207 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:07,208 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:07,209 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:07,210 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:43:08,400 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:08,964 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:43:08,969 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:08,969 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:08,970 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:43:08,971 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:10,418 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:43:10,422 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:10,423 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:10,425 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:43:10,426 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:11,604 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:11,605 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:11,606 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:11,607 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:11,608 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:13,516 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:43:13,971 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:43:14,698 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:43:14,703 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:14,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:43:14,705 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:14,705 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:43:14,708 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:43:14,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:43:14,710 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:43:14,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:43:14,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:43:14,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:43:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 8 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 10:43:17,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245350912] [2020-07-21 10:43:17,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:43:17,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26] total 45 [2020-07-21 10:43:17,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860278778] [2020-07-21 10:43:17,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-21 10:43:17,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:43:17,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-21 10:43:17,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1830, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 10:43:17,196 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 45 states. [2020-07-21 10:43:18,191 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:43:18,893 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:43:19,266 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:43:19,692 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:43:20,262 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:43:21,446 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 10:43:21,872 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:43:22,660 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:43:23,053 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:43:23,614 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 10:43:24,273 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:43:25,098 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:43:26,250 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 10:43:27,111 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2020-07-21 10:43:27,805 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 10:43:28,648 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 18 [2020-07-21 10:43:29,312 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 10:43:29,860 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:43:30,576 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-07-21 10:43:31,185 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:43:31,868 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2020-07-21 10:43:33,275 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 10:43:34,465 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:43:35,955 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:43:36,298 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 10:43:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:43:36,325 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2020-07-21 10:43:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-21 10:43:36,335 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 58 [2020-07-21 10:43:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:43:36,338 INFO L225 Difference]: With dead ends: 87 [2020-07-21 10:43:36,338 INFO L226 Difference]: Without dead ends: 79 [2020-07-21 10:43:36,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=619, Invalid=4637, Unknown=0, NotChecked=0, Total=5256 [2020-07-21 10:43:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-21 10:43:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-07-21 10:43:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 10:43:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-07-21 10:43:36,354 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 58 [2020-07-21 10:43:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:43:36,354 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-07-21 10:43:36,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-21 10:43:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-07-21 10:43:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 10:43:36,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:43:36,356 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:43:36,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:36,557 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:43:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:43:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1255254341, now seen corresponding path program 6 times [2020-07-21 10:43:36,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:43:36,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327960686] [2020-07-21 10:43:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:43:36,608 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 85 conjunts are in the unsatisfiable core [2020-07-21 10:43:36,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:43:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-21 10:43:38,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:43:39,138 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:39,577 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:40,578 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:40,578 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:40,579 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:40,579 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:41,270 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:41,271 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:41,272 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:41,272 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:42,736 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:43,118 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:43:44,283 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:43:44,537 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:43:44,672 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:43:45,246 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:43:45,247 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:48,316 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:43:52,991 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:43:52,996 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:43:52,997 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:43:52,998 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:43:53,538 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-07-21 10:43:54,692 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-21 10:43:54,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327960686] [2020-07-21 10:43:54,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:43:54,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-07-21 10:43:54,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053745973] [2020-07-21 10:43:54,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 10:43:54,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:43:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 10:43:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1077, Unknown=2, NotChecked=0, Total=1190 [2020-07-21 10:43:54,699 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 16 states. [2020-07-21 10:43:55,336 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:43:55,786 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:43:56,082 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:43:56,476 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:43:56,821 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:43:57,291 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:43:57,660 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:43:58,441 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:43:58,961 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:43:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:43:59,289 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2020-07-21 10:43:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 10:43:59,302 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-07-21 10:43:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:43:59,303 INFO L225 Difference]: With dead ends: 75 [2020-07-21 10:43:59,303 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 10:43:59,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=246, Invalid=1732, Unknown=2, NotChecked=0, Total=1980 [2020-07-21 10:43:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 10:43:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-07-21 10:43:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 10:43:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 97 transitions. [2020-07-21 10:43:59,322 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 97 transitions. Word has length 58 [2020-07-21 10:43:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:43:59,323 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 97 transitions. [2020-07-21 10:43:59,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 10:43:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 97 transitions. [2020-07-21 10:43:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 10:43:59,324 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:43:59,325 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:43:59,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:59,539 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:43:59,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:43:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2039564078, now seen corresponding path program 7 times [2020-07-21 10:43:59,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:43:59,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667571992] [2020-07-21 10:43:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:43:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:43:59,602 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 121 conjunts are in the unsatisfiable core [2020-07-21 10:43:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:44:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 5 proven. 134 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-07-21 10:44:02,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:44:02,959 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:03,328 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:03,716 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:04,099 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:04,478 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:04,982 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:05,750 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:44:05,864 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:44:06,029 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:06,219 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:06,328 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:06,491 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:06,884 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:07,459 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:07,460 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:07,461 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:07,461 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:08,467 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:08,869 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:09,488 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:09,489 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:44:10,155 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:10,557 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:11,191 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:11,192 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:44:11,949 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:12,570 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:12,571 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:44:13,499 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:13,500 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:13,501 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:13,502 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:14,956 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:15,340 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:15,733 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:17,065 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:17,441 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:17,624 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:18,159 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:44:18,160 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:19,475 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:20,271 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 10:44:20,276 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:20,278 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:20,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:44:20,896 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-07-21 10:44:22,297 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-07-21 10:44:22,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667571992] [2020-07-21 10:44:22,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:44:22,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-07-21 10:44:22,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161409611] [2020-07-21 10:44:22,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 10:44:22,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:44:22,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 10:44:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1830, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 10:44:22,304 INFO L87 Difference]: Start difference. First operand 67 states and 97 transitions. Second operand 20 states. [2020-07-21 10:44:23,162 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:44:23,762 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:44:24,147 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:44:24,530 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:44:25,106 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:25,627 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:44:26,127 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:26,535 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:44:27,048 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:27,619 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:44:28,120 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:29,270 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:44:29,944 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:44:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:44:30,160 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2020-07-21 10:44:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 10:44:30,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 79 [2020-07-21 10:44:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:44:30,175 INFO L225 Difference]: With dead ends: 78 [2020-07-21 10:44:30,175 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 10:44:30,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=384, Invalid=3038, Unknown=0, NotChecked=0, Total=3422 [2020-07-21 10:44:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 10:44:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-07-21 10:44:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 10:44:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 105 transitions. [2020-07-21 10:44:30,187 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 105 transitions. Word has length 79 [2020-07-21 10:44:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:44:30,188 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 105 transitions. [2020-07-21 10:44:30,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 10:44:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 105 transitions. [2020-07-21 10:44:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 10:44:30,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:44:30,190 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:44:30,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:44:30,398 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:44:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:44:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 8 times [2020-07-21 10:44:30,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:44:30,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021116797] [2020-07-21 10:44:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:44:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:44:30,460 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 10:44:30,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:44:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-07-21 10:44:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:44:33,052 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:33,448 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:33,858 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:34,352 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:34,942 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:35,336 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:35,885 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:35,885 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:44:36,628 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:37,195 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:37,196 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:37,197 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:37,197 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:38,002 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:38,003 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:38,004 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:38,004 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:39,250 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:39,642 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:40,054 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:41,311 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:41,724 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:41,898 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:42,004 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:42,386 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:44:42,387 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:44:42,855 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:43,122 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,124 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,125 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,125 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,406 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,408 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,408 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,409 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 10:44:43,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021116797] [2020-07-21 10:44:43,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:44:43,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 31 [2020-07-21 10:44:43,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032647739] [2020-07-21 10:44:43,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-21 10:44:43,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:44:43,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-21 10:44:43,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2020-07-21 10:44:43,496 INFO L87 Difference]: Start difference. First operand 70 states and 105 transitions. Second operand 31 states. [2020-07-21 10:44:44,347 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:44:44,933 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:44:45,283 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:44:45,636 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:44:46,124 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:46,735 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:44:47,237 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:44:47,692 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:44:48,133 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:44:50,472 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-21 10:44:51,291 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-21 10:44:51,760 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:44:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:44:51,910 INFO L93 Difference]: Finished difference Result 82 states and 115 transitions. [2020-07-21 10:44:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 10:44:51,920 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-07-21 10:44:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:44:51,921 INFO L225 Difference]: With dead ends: 82 [2020-07-21 10:44:51,922 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 10:44:51,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=279, Invalid=1977, Unknown=0, NotChecked=0, Total=2256 [2020-07-21 10:44:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 10:44:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-07-21 10:44:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 10:44:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2020-07-21 10:44:51,933 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 65 [2020-07-21 10:44:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:44:51,934 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2020-07-21 10:44:51,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-21 10:44:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2020-07-21 10:44:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 10:44:51,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:44:51,935 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:44:52,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:44:52,137 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:44:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:44:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash -335786642, now seen corresponding path program 9 times [2020-07-21 10:44:52,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:44:52,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135293712] [2020-07-21 10:44:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:44:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:44:52,234 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 10:44:52,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:44:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 6 proven. 197 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-07-21 10:44:55,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:44:56,424 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:44:56,841 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:44:57,254 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:57,527 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:57,672 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:58,086 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:58,357 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:44:58,503 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:44:59,074 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:44:59,748 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:00,148 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:00,555 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:00,828 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:00,970 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:01,241 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:01,397 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:01,583 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:01,687 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:02,084 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:02,085 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:03,003 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:03,423 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:03,598 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:03,844 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:04,255 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:04,923 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:04,924 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:04,924 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:04,926 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:05,652 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:06,052 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:06,467 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:06,636 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:07,169 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:07,170 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:07,171 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:07,172 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:07,938 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:08,344 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:09,029 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:09,029 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:09,899 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:10,602 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:10,603 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:11,681 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:11,682 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:11,682 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:11,683 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:13,310 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:13,718 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:13,897 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:14,005 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:14,155 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:14,328 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:14,444 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:14,593 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:16,141 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:16,556 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:16,731 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:16,837 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:16,987 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:17,162 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:17,270 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:17,751 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:45:17,752 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:45:18,417 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:45:19,053 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:45:19,454 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:19,870 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:20,047 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:20,153 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:20,784 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:20,788 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:20,790 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:20,790 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:45:21,470 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 10:45:22,428 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:23,384 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 10:45:23,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135293712] [2020-07-21 10:45:23,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:45:23,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-21 10:45:23,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261843336] [2020-07-21 10:45:23,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 10:45:23,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:45:23,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 10:45:23,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2188, Unknown=0, NotChecked=0, Total=2352 [2020-07-21 10:45:23,391 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand 22 states. [2020-07-21 10:45:24,414 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:45:25,116 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:45:25,569 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:45:27,564 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:45:28,047 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:28,685 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:45:29,276 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:30,003 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:45:30,468 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:32,104 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:45:32,737 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:45:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:45:32,994 INFO L93 Difference]: Finished difference Result 79 states and 113 transitions. [2020-07-21 10:45:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-21 10:45:33,008 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 93 [2020-07-21 10:45:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:45:33,010 INFO L225 Difference]: With dead ends: 79 [2020-07-21 10:45:33,010 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 10:45:33,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=449, Invalid=3711, Unknown=0, NotChecked=0, Total=4160 [2020-07-21 10:45:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 10:45:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-07-21 10:45:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-21 10:45:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 106 transitions. [2020-07-21 10:45:33,022 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 106 transitions. Word has length 93 [2020-07-21 10:45:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:45:33,023 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 106 transitions. [2020-07-21 10:45:33,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 10:45:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 106 transitions. [2020-07-21 10:45:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 10:45:33,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:45:33,025 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:45:33,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:45:33,231 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:45:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:45:33,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 10 times [2020-07-21 10:45:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:45:33,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062435162] [2020-07-21 10:45:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:45:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:45:33,308 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 10:45:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:45:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-21 10:45:35,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:45:36,388 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:36,795 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:37,326 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:37,954 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:38,528 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:38,529 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:38,530 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:38,532 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:39,373 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:39,374 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:39,375 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:39,375 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:40,663 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:41,056 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:41,230 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:41,336 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:41,479 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:41,885 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:43,176 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:43,579 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:43,988 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:45:44,701 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:45:44,707 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:45:44,708 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:45,560 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:45,753 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:45:45,872 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:45:46,044 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:45:46,234 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:46,339 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:45:46,722 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:46,723 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:47,193 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:45:47,452 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:47,453 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:45:47,716 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:47,717 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:47,718 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:47,718 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:45:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 10:45:47,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062435162] [2020-07-21 10:45:47,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:45:47,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 33 [2020-07-21 10:45:47,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756620295] [2020-07-21 10:45:47,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-21 10:45:47,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:45:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-21 10:45:47,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2020-07-21 10:45:47,812 INFO L87 Difference]: Start difference. First operand 71 states and 106 transitions. Second operand 33 states. [2020-07-21 10:45:48,708 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:45:49,373 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:45:49,762 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:45:50,305 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:45:50,843 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:51,518 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:45:51,921 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:52,342 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:45:52,745 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:45:53,337 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:45:53,802 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:45:54,355 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:45:54,781 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:45:55,978 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-07-21 10:45:56,717 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-07-21 10:45:57,611 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:45:58,241 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-07-21 10:45:58,898 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:46:00,329 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:46:01,484 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:46:02,054 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:46:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:46:02,242 INFO L93 Difference]: Finished difference Result 96 states and 137 transitions. [2020-07-21 10:46:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 10:46:02,254 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2020-07-21 10:46:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:46:02,255 INFO L225 Difference]: With dead ends: 96 [2020-07-21 10:46:02,255 INFO L226 Difference]: Without dead ends: 85 [2020-07-21 10:46:02,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 89 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=426, Invalid=2766, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 10:46:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-21 10:46:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-07-21 10:46:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 10:46:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 112 transitions. [2020-07-21 10:46:02,268 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 112 transitions. Word has length 65 [2020-07-21 10:46:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:46:02,269 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 112 transitions. [2020-07-21 10:46:02,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-21 10:46:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 112 transitions. [2020-07-21 10:46:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-21 10:46:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:46:02,270 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:46:02,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:46:02,484 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:46:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:46:02,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1850137581, now seen corresponding path program 11 times [2020-07-21 10:46:02,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:46:02,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563875939] [2020-07-21 10:46:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:46:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:46:02,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 109 conjunts are in the unsatisfiable core [2020-07-21 10:46:02,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:46:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-07-21 10:46:05,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:46:06,270 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:06,684 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:06,958 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:07,109 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:07,286 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:07,539 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:07,816 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:07,957 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:08,522 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:09,185 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:09,602 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:09,776 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:10,024 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:10,208 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:10,319 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:10,462 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:10,633 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:10,738 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:11,095 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:11,096 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:11,096 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:11,097 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:11,778 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:12,187 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:12,363 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:12,468 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:12,603 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:12,775 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:13,243 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:13,244 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:13,245 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:13,246 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:13,963 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:14,370 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:15,005 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:15,006 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:46:15,782 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:16,041 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:16,427 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:16,427 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:46:17,399 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:17,400 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:46:18,936 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:19,196 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:19,342 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:20,775 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:21,473 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:46:21,474 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:46:23,270 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:46:23,276 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:23,285 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:23,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:46:23,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:46:23,300 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:46:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 10:46:23,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563875939] [2020-07-21 10:46:23,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:46:23,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30] total 42 [2020-07-21 10:46:23,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799777484] [2020-07-21 10:46:23,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-21 10:46:23,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:46:23,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-21 10:46:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-07-21 10:46:23,427 INFO L87 Difference]: Start difference. First operand 75 states and 112 transitions. Second operand 42 states. [2020-07-21 10:46:24,541 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:46:25,334 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:46:25,797 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:46:26,499 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:46:27,179 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:46:28,034 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:46:28,732 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:46:29,444 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:46:29,965 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:46:30,470 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:46:30,975 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:46:31,470 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:46:32,697 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:46:33,197 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:46:33,917 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:46:35,655 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:36,906 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:46:37,610 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:46:39,189 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:46:39,876 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:46:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:46:39,881 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2020-07-21 10:46:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-21 10:46:39,881 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 72 [2020-07-21 10:46:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:46:39,882 INFO L225 Difference]: With dead ends: 92 [2020-07-21 10:46:39,883 INFO L226 Difference]: Without dead ends: 85 [2020-07-21 10:46:39,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 91 SyntacticMatches, 12 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=484, Invalid=3676, Unknown=0, NotChecked=0, Total=4160 [2020-07-21 10:46:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-21 10:46:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-07-21 10:46:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 10:46:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2020-07-21 10:46:39,900 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 72 [2020-07-21 10:46:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:46:39,900 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2020-07-21 10:46:39,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-21 10:46:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2020-07-21 10:46:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 10:46:39,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:46:39,902 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:46:40,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:46:40,104 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:46:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:46:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1806425208, now seen corresponding path program 12 times [2020-07-21 10:46:40,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:46:40,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19329343] [2020-07-21 10:46:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:46:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:46:40,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 121 conjunts are in the unsatisfiable core [2020-07-21 10:46:40,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:46:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-21 10:46:43,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:46:44,490 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:44,656 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:44,760 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:44,909 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:45,088 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:45,192 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:45,341 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:45,520 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:45,626 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:45,772 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:45,949 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:46,059 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:46,212 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:46,399 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:46,507 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:46,654 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:46,823 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:46:47,255 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:47,974 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:48,393 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:48,567 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:48,676 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:48,830 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:49,005 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:49,263 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:49,442 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:49,548 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:49,707 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:49,886 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:50,372 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:50,373 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:50,374 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:50,374 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:51,298 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:51,474 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:51,578 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:51,724 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:51,902 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:52,007 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:52,159 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:52,436 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:52,596 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:52,880 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:53,295 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:53,302 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:53,303 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:53,304 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:54,043 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:54,214 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:54,322 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:54,473 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:54,653 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:54,763 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:54,918 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:46:55,102 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:55,208 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:55,624 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:46:55,630 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:55,631 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:55,632 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:55,633 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:56,401 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:56,575 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:56,683 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:56,841 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:46:57,021 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:57,128 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:46:57,567 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:57,568 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:46:58,493 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:46:58,673 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:58,781 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:46:59,240 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:46:59,240 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:47:00,381 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:00,382 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:47:02,171 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:02,349 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:02,462 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:02,618 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:02,797 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:02,902 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:04,243 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:04,421 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:04,528 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:05,034 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:47:05,035 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:47:05,590 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:47:06,174 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:47:07,064 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 10:47:07,070 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:07,071 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:47:07,071 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 10:47:07,086 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:07,094 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 10:47:07,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19329343] [2020-07-21 10:47:07,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:47:07,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 33] total 46 [2020-07-21 10:47:07,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722281816] [2020-07-21 10:47:07,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-21 10:47:07,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:47:07,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-21 10:47:07,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2020-07-21 10:47:07,228 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand 46 states. [2020-07-21 10:47:08,468 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:47:09,370 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:47:09,901 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:47:10,644 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:47:11,392 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:47:12,329 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:47:13,068 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:47:13,818 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:47:14,333 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:47:14,876 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:47:15,403 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:47:15,953 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:47:17,212 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:47:17,755 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:47:18,506 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:47:19,048 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:47:19,833 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:47:20,697 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:47:21,380 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:23,991 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:47:25,006 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:47:25,769 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:47:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:47:26,020 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2020-07-21 10:47:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 10:47:26,033 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 79 [2020-07-21 10:47:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:47:26,035 INFO L225 Difference]: With dead ends: 91 [2020-07-21 10:47:26,035 INFO L226 Difference]: Without dead ends: 84 [2020-07-21 10:47:26,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 100 SyntacticMatches, 13 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=555, Invalid=4415, Unknown=0, NotChecked=0, Total=4970 [2020-07-21 10:47:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-21 10:47:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69. [2020-07-21 10:47:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 10:47:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2020-07-21 10:47:26,045 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 79 [2020-07-21 10:47:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:47:26,046 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2020-07-21 10:47:26,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-21 10:47:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2020-07-21 10:47:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 10:47:26,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:47:26,048 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:47:26,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:47:26,262 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:47:26,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:47:26,263 INFO L82 PathProgramCache]: Analyzing trace with hash -180332919, now seen corresponding path program 13 times [2020-07-21 10:47:26,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:47:26,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37424108] [2020-07-21 10:47:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:47:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:47:26,374 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 10:47:26,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:47:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-07-21 10:47:30,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:47:31,739 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:31,916 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:32,027 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:32,187 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:32,375 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:32,486 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:32,647 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:32,835 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:32,949 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:33,108 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:33,296 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:33,410 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:33,577 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:33,763 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:33,875 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:34,038 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:34,228 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:34,337 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:34,498 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:34,676 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:34,782 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:35,166 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:35,948 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:36,128 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:36,238 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:36,393 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:36,581 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:36,694 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:36,856 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:37,042 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:37,153 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:37,322 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:37,502 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:37,616 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:37,782 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:37,966 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:38,082 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:38,240 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:38,426 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:38,542 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:38,978 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:38,979 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:38,979 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:38,980 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:40,000 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:40,178 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:40,286 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:40,438 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:40,627 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:40,738 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:40,893 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:41,083 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:41,190 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:41,347 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:41,534 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:41,645 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:41,801 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:41,988 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:42,099 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:42,541 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:42,542 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:42,542 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:42,543 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:43,543 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:43,723 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:43,833 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:43,991 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:44,177 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:44,289 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:44,450 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:44,639 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:44,759 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:44,918 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:45,107 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:45,219 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:45,685 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:45,686 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:45,687 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:45,687 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:46,512 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:46,701 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:46,805 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:46,962 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:47,142 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:47,255 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:47,410 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:47:47,597 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:47,709 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:48,214 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:47:48,219 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:48,220 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:47:49,063 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:49,246 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:49,360 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:49,523 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:49,715 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:49,830 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:47:50,320 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:47:50,325 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:50,332 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:47:51,305 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:51,488 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:51,601 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:52,122 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:47:52,128 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:52,129 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:47:53,403 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:53,403 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:53,404 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:53,405 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:47:55,366 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:55,547 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:55,661 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:55,828 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:47:56,012 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:56,120 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:57,588 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:47:57,766 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:57,876 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:47:58,432 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:47:58,433 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:47:59,039 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:47:59,724 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:00,674 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:48:00,680 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:00,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:48:00,691 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:00,698 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:48:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 10:48:00,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37424108] [2020-07-21 10:48:00,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:48:00,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 36] total 50 [2020-07-21 10:48:00,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829328492] [2020-07-21 10:48:00,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-21 10:48:00,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:48:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-21 10:48:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2020-07-21 10:48:00,848 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand 50 states. [2020-07-21 10:48:02,145 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:48:03,044 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:48:03,601 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:48:04,384 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:48:05,168 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:06,147 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:06,933 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:07,783 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:48:08,369 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:48:08,956 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:09,529 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:48:10,110 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:11,546 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:12,116 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:12,942 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:13,539 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:14,339 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:14,936 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:15,840 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:48:16,745 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:48:17,741 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:18,730 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:48:21,314 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:48:22,113 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:48:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:48:22,379 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2020-07-21 10:48:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 10:48:22,392 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 86 [2020-07-21 10:48:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:48:22,395 INFO L225 Difference]: With dead ends: 94 [2020-07-21 10:48:22,395 INFO L226 Difference]: Without dead ends: 87 [2020-07-21 10:48:22,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 108 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=630, Invalid=5222, Unknown=0, NotChecked=0, Total=5852 [2020-07-21 10:48:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-21 10:48:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2020-07-21 10:48:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-21 10:48:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2020-07-21 10:48:22,406 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 86 [2020-07-21 10:48:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:48:22,407 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2020-07-21 10:48:22,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-21 10:48:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2020-07-21 10:48:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 10:48:22,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:48:22,408 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:48:22,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:48:22,611 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:48:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:48:22,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1525719705, now seen corresponding path program 14 times [2020-07-21 10:48:22,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:48:22,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137837323] [2020-07-21 10:48:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:48:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:48:22,729 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 10:48:22,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:48:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-07-21 10:48:26,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:48:26,903 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:27,086 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:27,204 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:27,369 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:27,560 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:27,675 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:27,835 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:28,034 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:28,151 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:28,315 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:28,532 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:48:28,646 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:48:28,978 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:29,728 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:29,911 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:30,019 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:30,194 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:30,380 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:30,499 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:30,669 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:30,861 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:30,982 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:31,373 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:48:31,377 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:31,378 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:31,379 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:31,379 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:32,140 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:32,320 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:32,436 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:32,608 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:32,802 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:32,924 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:33,342 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:48:33,354 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:33,354 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:33,355 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:33,355 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:34,238 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:34,423 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:34,537 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:34,976 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:34,977 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:34,977 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:34,978 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:36,081 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:36,082 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:36,082 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:36,083 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:37,776 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:37,970 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:38,087 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:38,260 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:38,455 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:38,580 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:38,756 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:38,951 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:39,059 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:39,216 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:39,401 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:39,523 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:39,695 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:39,885 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:48:39,995 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:48:41,331 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:41,520 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:41,632 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:41,799 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:41,994 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:42,104 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:42,273 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:42,472 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:42,588 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:42,754 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:42,943 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:43,065 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:43,547 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:48:43,553 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:48:43,554 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:48:44,086 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 10:48:44,672 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:48:45,112 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:45,338 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:45,481 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:45,706 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:45,931 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:46,051 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:46,213 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:48:46,410 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:46,529 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:49,152 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:48:49,158 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:48:49,159 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:48:49,159 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:48:50,084 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-07-21 10:48:51,040 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:48:51,230 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:51,343 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:48:51,508 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:48:51,703 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:51,818 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:48:52,492 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 10:48:52,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137837323] [2020-07-21 10:48:52,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:48:52,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-07-21 10:48:52,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866838142] [2020-07-21 10:48:52,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 10:48:52,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:48:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 10:48:52,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2020-07-21 10:48:52,498 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand 20 states. [2020-07-21 10:48:53,524 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:48:54,226 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:48:54,692 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:48:55,174 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:48:55,796 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:56,408 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:57,039 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:57,541 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:58,030 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:48:58,530 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:48:59,138 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:49:00,840 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-07-21 10:49:01,483 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-07-21 10:49:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:49:01,487 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2020-07-21 10:49:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 10:49:01,488 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-07-21 10:49:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:49:01,489 INFO L225 Difference]: With dead ends: 82 [2020-07-21 10:49:01,490 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 10:49:01,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=362, Invalid=2830, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 10:49:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 10:49:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-07-21 10:49:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-21 10:49:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2020-07-21 10:49:01,499 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 86 [2020-07-21 10:49:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:49:01,500 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2020-07-21 10:49:01,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 10:49:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2020-07-21 10:49:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 10:49:01,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:49:01,501 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:49:01,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:49:01,707 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:49:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:49:01,708 INFO L82 PathProgramCache]: Analyzing trace with hash -330893523, now seen corresponding path program 15 times [2020-07-21 10:49:01,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:49:01,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770015864] [2020-07-21 10:49:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:49:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:49:01,847 WARN L261 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 181 conjunts are in the unsatisfiable core [2020-07-21 10:49:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:49:06,675 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 10:49:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 8 proven. 315 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-07-21 10:49:07,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:49:08,170 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:49:08,282 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:49:08,441 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:08,653 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:08,782 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:08,949 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:09,157 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:09,276 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:09,441 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:09,633 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:09,745 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:09,916 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:10,111 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:10,230 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:10,396 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:10,596 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:10,721 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:10,894 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:11,090 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:11,209 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:11,378 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:11,579 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:11,697 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:11,859 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:12,042 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:49:12,160 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:49:12,606 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:13,454 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:13,646 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:13,765 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:13,946 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:14,147 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:14,270 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:14,444 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:14,645 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:14,767 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:14,939 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:15,137 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:15,257 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:15,424 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:15,623 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:15,745 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:15,921 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:16,123 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:16,244 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:16,414 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:16,611 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:16,732 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:17,220 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:17,225 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:17,226 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:17,226 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:17,227 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:18,106 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:18,295 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:18,409 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:18,571 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:18,772 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:18,895 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:19,065 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:19,264 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:19,384 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:19,547 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:19,736 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:19,856 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:20,024 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:20,229 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:20,347 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:20,515 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:20,720 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:20,839 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:21,337 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:21,342 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:21,343 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:21,344 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:21,344 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:22,478 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:22,668 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:22,782 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:22,945 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:23,139 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:23,252 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:23,425 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:23,629 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:23,750 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:23,917 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:24,113 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:24,232 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:24,403 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:24,598 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:24,716 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:25,217 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:25,223 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:25,224 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:25,224 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:25,225 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:26,300 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:26,490 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:26,603 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:26,775 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:26,977 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:27,097 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:27,269 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:27,468 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:27,591 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:27,767 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:27,964 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:28,083 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:28,611 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:28,616 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:28,617 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:49:29,593 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:29,787 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:29,903 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:30,078 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:30,281 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:30,406 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:30,615 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:30,862 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:31,010 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:31,655 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:31,660 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:31,662 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:31,662 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:31,663 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:32,597 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:32,791 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:32,909 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:33,078 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:33,270 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:33,390 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:33,950 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:33,961 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:33,961 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:49:35,013 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:35,202 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:35,315 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:35,884 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:35,890 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:35,891 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:35,892 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:35,893 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:37,278 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:49:37,283 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:37,284 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:49:39,457 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:39,650 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:39,761 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:39,926 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:40,125 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:40,246 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:40,418 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:40,619 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:40,738 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:40,909 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:41,113 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:41,234 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:41,406 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:41,600 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:49:41,712 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:49:43,371 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:43,564 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:43,682 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:43,852 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:44,053 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:44,177 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:44,350 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:44,559 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:44,682 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:44,856 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:45,054 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:45,172 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:45,806 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:49:45,813 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 10:49:45,814 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:49:46,500 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:49:47,208 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:47,655 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:47,847 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:47,960 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:48,138 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:48,334 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:48,451 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:48,616 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:49:48,810 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:48,934 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:49,674 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:49,680 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:49,680 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 10:49:49,689 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:49,698 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:49:50,654 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 10:49:51,811 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:49:52,004 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:52,122 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:49:52,295 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:49:52,496 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:52,615 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:49:53,470 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 10:49:53,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770015864] [2020-07-21 10:49:53,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:49:53,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-07-21 10:49:53,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016886633] [2020-07-21 10:49:53,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 10:49:53,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:49:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 10:49:53,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3000, Unknown=0, NotChecked=0, Total=3192 [2020-07-21 10:49:53,477 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand 26 states. [2020-07-21 10:49:54,821 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:49:55,781 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:49:56,388 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:49:57,004 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:49:57,800 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:49:58,602 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:49:59,592 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:00,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:50:01,207 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:02,008 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:50:02,955 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:03,596 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:50:04,375 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:05,326 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:50:06,107 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:06,739 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:50:07,528 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:50:09,282 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 10:50:10,313 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 10:50:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:50:10,482 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-21 10:50:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 10:50:10,498 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 114 [2020-07-21 10:50:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:50:10,500 INFO L225 Difference]: With dead ends: 85 [2020-07-21 10:50:10,500 INFO L226 Difference]: Without dead ends: 81 [2020-07-21 10:50:10,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 124 SyntacticMatches, 13 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=591, Invalid=5261, Unknown=0, NotChecked=0, Total=5852 [2020-07-21 10:50:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-21 10:50:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-07-21 10:50:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 10:50:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2020-07-21 10:50:10,511 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 114 [2020-07-21 10:50:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:50:10,512 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-07-21 10:50:10,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 10:50:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2020-07-21 10:50:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 10:50:10,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:50:10,513 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:50:10,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:50:10,721 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:50:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:50:10,722 INFO L82 PathProgramCache]: Analyzing trace with hash 365189506, now seen corresponding path program 16 times [2020-07-21 10:50:10,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:50:10,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677546800] [2020-07-21 10:50:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:50:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:50:10,869 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 10:50:10,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:50:15,854 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:16,356 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 8 proven. 201 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-07-21 10:50:16,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:50:17,440 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:17,633 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:17,751 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:17,926 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:18,128 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:18,255 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:18,431 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:18,636 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:18,758 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:18,931 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:19,138 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:19,263 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:19,441 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:19,650 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:19,773 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:19,949 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:20,152 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:20,277 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:20,449 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:20,646 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:20,766 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:20,937 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:21,136 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:50:21,258 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:50:21,719 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:22,609 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:22,806 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:22,928 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:23,107 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:23,318 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:23,442 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:23,616 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:23,816 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:23,937 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:24,117 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:24,324 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:24,453 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:24,630 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:24,838 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:24,960 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:25,137 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:25,348 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:25,475 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:25,654 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:25,862 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:25,987 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:26,490 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:26,496 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:26,497 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:50:27,400 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:27,592 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:27,711 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:27,890 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:28,100 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:28,231 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:28,418 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:28,624 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:28,753 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:28,933 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:29,140 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:29,266 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:29,446 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:29,655 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:29,782 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:29,969 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:30,175 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:30,295 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:30,809 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:30,814 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:30,815 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:30,815 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:30,816 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:32,019 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:32,215 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:32,338 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:32,516 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:32,725 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:32,850 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:33,022 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:33,220 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:33,345 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:33,518 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:33,730 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:33,852 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:34,032 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:34,239 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:34,363 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:34,888 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:34,893 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:34,894 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:50:36,070 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:36,265 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:36,386 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:36,559 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:36,764 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:36,888 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:37,070 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:37,271 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:37,396 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:37,578 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:37,784 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:37,910 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:38,451 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:38,456 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:38,457 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:38,466 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:38,467 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:39,500 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:39,694 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:39,814 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:39,983 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:40,184 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:40,312 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:40,485 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:50:40,697 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:40,819 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:50:41,357 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:41,358 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:41,358 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:41,359 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:42,066 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:42,432 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:43,090 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:43,090 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:43,091 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:43,091 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:43,947 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:44,142 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:44,265 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:44,861 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:44,866 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:44,867 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:44,868 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:44,868 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:46,308 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:50:46,314 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:46,315 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:46,315 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:46,316 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:48,548 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:48,753 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:48,870 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:49,045 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:50:49,245 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:50:49,355 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:50:51,006 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:50:51,203 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:51,316 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:51,959 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:50:51,966 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:50:51,967 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:52,678 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:50:53,417 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:50:54,512 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:50:54,517 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:54,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:50:54,518 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:50:54,527 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:50:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 35 proven. 315 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-07-21 10:50:54,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677546800] [2020-07-21 10:50:54,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:50:54,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39] total 54 [2020-07-21 10:50:54,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620335837] [2020-07-21 10:50:54,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-21 10:50:54,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:50:54,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-21 10:50:54,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2684, Unknown=0, NotChecked=0, Total=2862 [2020-07-21 10:50:54,707 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand 54 states. [2020-07-21 10:50:56,183 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:50:57,264 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:50:57,905 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:50:58,572 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:50:59,511 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:00,646 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:01,560 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:02,751 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:51:03,415 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:04,060 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:51:04,722 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:05,392 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:51:06,485 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:07,684 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:08,374 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:09,277 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:09,954 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:10,890 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:11,548 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:51:12,477 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:51:13,218 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:51:14,383 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:51:15,626 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:51:16,681 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:17,421 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:51:18,194 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:51:19,187 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:51:20,237 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-07-21 10:51:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:51:20,534 INFO L93 Difference]: Finished difference Result 99 states and 133 transitions. [2020-07-21 10:51:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-21 10:51:20,546 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 93 [2020-07-21 10:51:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:51:20,548 INFO L225 Difference]: With dead ends: 99 [2020-07-21 10:51:20,548 INFO L226 Difference]: Without dead ends: 92 [2020-07-21 10:51:20,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 16 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=709, Invalid=6097, Unknown=0, NotChecked=0, Total=6806 [2020-07-21 10:51:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-21 10:51:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-07-21 10:51:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 10:51:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 103 transitions. [2020-07-21 10:51:20,559 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 103 transitions. Word has length 93 [2020-07-21 10:51:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:51:20,559 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 103 transitions. [2020-07-21 10:51:20,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-21 10:51:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 103 transitions. [2020-07-21 10:51:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 10:51:20,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:51:20,561 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:51:20,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:51:20,776 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:51:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:51:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1343946330, now seen corresponding path program 17 times [2020-07-21 10:51:20,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:51:20,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172589457] [2020-07-21 10:51:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:51:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:51:20,927 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 10:51:20,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:51:24,899 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 199 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-07-21 10:51:24,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:51:25,890 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:26,087 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:26,207 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:26,385 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:26,583 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:26,706 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:26,878 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:27,072 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:27,188 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:27,363 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:27,558 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:51:27,673 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:51:28,072 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:28,884 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:29,070 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:29,184 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:29,360 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:29,561 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:29,693 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:29,864 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:30,074 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:30,199 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:30,633 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:51:30,639 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:30,639 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:51:31,478 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:31,666 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:31,784 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:31,959 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:32,156 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:32,277 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:32,727 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:51:32,733 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:32,734 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:51:33,687 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:33,876 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:33,998 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:34,470 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:51:34,476 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:34,477 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:51:35,677 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:51:35,682 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:35,683 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:35,684 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:35,684 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:37,577 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:37,776 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:37,896 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:38,075 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:38,282 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:38,407 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:38,581 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:38,793 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:38,914 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:39,091 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:39,299 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:39,426 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:39,605 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:39,812 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:39,938 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:40,113 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:40,315 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:51:40,430 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:51:41,899 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:42,098 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:42,226 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:42,403 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:42,611 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:42,738 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:42,915 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:43,124 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:43,245 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:43,422 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:43,628 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:43,760 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:43,939 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:44,148 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:44,274 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:44,816 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:51:44,822 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:51:44,823 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:45,438 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:51:46,054 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:51:46,531 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:46,733 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:46,860 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:47,037 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:47,238 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:47,362 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:47,538 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:47,751 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:47,880 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:48,056 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:51:48,266 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:48,389 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:51:53,091 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:51:53,097 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:53,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:51:53,098 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:53,106 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:51:56,212 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-07-21 10:51:59,628 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:51:59,829 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:51:59,949 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:00,126 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:00,334 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:00,463 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:00,644 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:00,852 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:00,978 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:01,727 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 10:52:01,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172589457] [2020-07-21 10:52:01,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:52:01,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-21 10:52:01,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443189079] [2020-07-21 10:52:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 10:52:01,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:52:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 10:52:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1834, Unknown=3, NotChecked=0, Total=1980 [2020-07-21 10:52:01,734 INFO L87 Difference]: Start difference. First operand 77 states and 103 transitions. Second operand 22 states. [2020-07-21 10:52:02,878 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:52:03,714 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:52:04,253 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:52:04,797 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:52:05,483 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:52:06,348 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:52:07,083 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:52:07,623 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:52:08,185 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:52:08,720 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:52:09,403 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:52:09,971 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:52:10,667 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:52:12,636 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 10:52:13,321 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 10:52:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:52:13,327 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2020-07-21 10:52:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-21 10:52:13,327 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 93 [2020-07-21 10:52:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:52:13,329 INFO L225 Difference]: With dead ends: 87 [2020-07-21 10:52:13,329 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 10:52:13,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=398, Invalid=3259, Unknown=3, NotChecked=0, Total=3660 [2020-07-21 10:52:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 10:52:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-07-21 10:52:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 10:52:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 103 transitions. [2020-07-21 10:52:13,339 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 103 transitions. Word has length 93 [2020-07-21 10:52:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:52:13,339 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 103 transitions. [2020-07-21 10:52:13,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 10:52:13,339 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 103 transitions. [2020-07-21 10:52:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 10:52:13,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:52:13,340 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:52:13,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:52:13,552 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:52:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:52:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1182847487, now seen corresponding path program 18 times [2020-07-21 10:52:13,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:52:13,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914634993] [2020-07-21 10:52:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:52:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:52:13,720 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 10:52:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:52:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 238 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-07-21 10:52:20,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:52:21,174 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:21,373 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:21,496 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:21,671 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:21,875 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:22,006 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:22,186 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:22,398 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:22,530 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:22,712 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:22,916 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:23,038 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:23,216 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:23,423 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:23,548 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:23,720 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:23,923 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:24,048 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:24,217 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:24,431 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:24,562 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:24,744 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:24,947 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:25,074 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:25,248 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:25,446 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:52:25,561 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:52:26,062 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:26,991 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:27,190 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:27,312 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:27,498 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:27,704 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:27,825 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:27,998 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:28,195 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:28,318 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:28,494 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:28,704 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:28,833 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:29,017 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:29,228 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:29,365 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:29,546 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:29,758 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:29,887 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:30,060 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:30,264 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:30,397 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:30,578 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:30,787 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:30,917 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:31,455 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:31,461 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:31,462 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:52:32,750 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:32,960 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:33,082 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:33,263 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:33,477 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:33,606 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:33,786 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:33,989 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:34,112 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:34,288 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:34,494 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:34,624 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:34,802 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:35,019 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:35,151 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:35,338 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:35,555 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:35,688 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:35,875 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:36,089 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:36,222 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:36,784 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:36,789 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:36,790 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:52:37,781 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:37,981 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:38,108 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:38,297 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:38,511 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:38,640 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:38,824 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:39,037 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:39,167 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:39,350 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:39,558 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:39,684 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:39,873 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:40,084 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:40,211 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:40,394 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:40,610 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:40,739 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:41,305 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:41,310 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:41,311 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:52:42,561 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:42,767 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:42,891 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:43,070 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:43,289 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:43,417 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:43,596 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:43,803 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:43,935 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:44,123 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:44,338 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:44,469 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:44,645 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:44,852 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:44,974 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:45,578 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:45,584 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:45,585 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:45,585 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:45,586 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:46,820 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:47,018 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:47,144 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:47,332 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:47,541 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:47,668 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:47,842 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:48,045 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:48,167 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:48,337 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:48,542 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:48,673 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:49,287 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:49,292 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:49,293 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:52:50,322 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:50,528 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:50,652 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:50,832 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:51,042 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:51,162 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:51,339 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:52:51,545 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:51,673 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:52,292 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:52,298 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:52,299 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:52,299 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:52,300 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:53,339 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:53,538 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:53,658 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:53,826 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:52:54,034 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:54,158 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:52:54,797 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:54,803 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:54,804 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:54,804 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:54,805 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:55,948 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:52:56,144 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:56,263 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:52:56,930 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:52:56,936 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:56,937 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:52:58,502 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:52:58,507 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:58,508 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:58,509 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:52:58,509 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:01,004 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:01,209 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:01,336 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:01,513 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:53:01,702 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:53:01,819 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:53:03,651 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:03,853 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:03,980 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:04,698 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:53:04,704 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:53:04,705 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:06,234 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:53:07,314 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 10:53:08,898 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 10:53:08,903 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:08,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:53:08,912 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:08,918 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:53:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 38 proven. 380 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-07-21 10:53:09,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914634993] [2020-07-21 10:53:09,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:53:09,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 42] total 58 [2020-07-21 10:53:09,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405982118] [2020-07-21 10:53:09,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-21 10:53:09,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:53:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-21 10:53:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3114, Unknown=0, NotChecked=0, Total=3306 [2020-07-21 10:53:09,115 INFO L87 Difference]: Start difference. First operand 77 states and 103 transitions. Second operand 58 states. [2020-07-21 10:53:10,580 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:53:11,662 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:53:12,342 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:53:13,083 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:53:14,053 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:15,284 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:16,258 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:17,588 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 10:53:18,335 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:19,052 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:53:19,788 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:20,511 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:53:21,657 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:22,930 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:23,689 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:24,681 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:25,448 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:26,452 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:27,226 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:28,247 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:29,038 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:53:30,036 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:53:30,850 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 10:53:32,213 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:33,081 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:53:34,152 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:53:35,055 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 10:53:36,498 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:53:38,271 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:53:39,372 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-07-21 10:53:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:53:39,378 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-07-21 10:53:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-21 10:53:39,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 100 [2020-07-21 10:53:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:53:39,380 INFO L225 Difference]: With dead ends: 102 [2020-07-21 10:53:39,380 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 10:53:39,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 124 SyntacticMatches, 19 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=792, Invalid=7040, Unknown=0, NotChecked=0, Total=7832 [2020-07-21 10:53:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 10:53:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2020-07-21 10:53:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 10:53:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2020-07-21 10:53:39,391 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 100 [2020-07-21 10:53:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:53:39,391 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2020-07-21 10:53:39,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-21 10:53:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2020-07-21 10:53:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 10:53:39,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:53:39,393 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:53:39,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:53:39,609 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:53:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:53:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash -192564829, now seen corresponding path program 19 times [2020-07-21 10:53:39,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:53:39,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009619479] [2020-07-21 10:53:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:53:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:53:39,786 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 10:53:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:53:44,432 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:44,893 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 4 proven. 237 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-07-21 10:53:44,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:53:45,988 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:46,194 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:46,316 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:46,502 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:53:46,716 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:46,850 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:47,029 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:53:47,241 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:47,366 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:47,540 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:53:47,751 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:53:47,874 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:53:48,320 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:49,210 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:49,408 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:49,531 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:49,710 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:53:49,919 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:50,049 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:50,230 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:53:50,448 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:50,574 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:51,069 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:53:51,075 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:51,076 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:53:51,970 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:52,174 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:52,303 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:52,483 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:53:52,697 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:52,826 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:53,333 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:53:53,339 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:53,339 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:53:54,365 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:54,567 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:54,695 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:55,217 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:53:55,222 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:55,223 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:53:56,538 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 10:53:56,543 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:53:56,545 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:53:58,349 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 10:53:58,594 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:53:58,794 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:58,912 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:53:59,095 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:53:59,309 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:59,437 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:59,617 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:53:59,826 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:53:59,960 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:00,142 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:00,355 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:00,483 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:00,663 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:00,874 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:01,002 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:01,179 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:01,393 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:01,520 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:01,708 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:01,911 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:54:02,033 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 10:54:03,594 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:03,795 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:03,913 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:04,094 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:04,306 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:04,434 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:04,615 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:04,832 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:04,959 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:05,138 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:05,357 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:05,487 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:05,670 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:05,883 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:06,014 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:06,194 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:06,407 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:06,542 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:07,123 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 10:54:07,128 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:54:07,129 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:09,792 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:10,452 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:10,936 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:11,143 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:11,275 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:11,459 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:11,671 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:11,802 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:11,986 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:12,202 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:12,335 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:12,523 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:12,737 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:12,870 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:13,055 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:13,270 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:13,401 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:14,140 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 10:54:14,146 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:14,147 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:54:14,147 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:54:15,145 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-07-21 10:54:16,376 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:16,584 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:16,710 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:16,893 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:17,110 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:17,240 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:17,426 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:17,639 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:17,770 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:17,956 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:18,171 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:18,302 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:19,146 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-07-21 10:54:19,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009619479] [2020-07-21 10:54:19,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:54:19,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-07-21 10:54:19,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346656826] [2020-07-21 10:54:19,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 10:54:19,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:54:19,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 10:54:19,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2013, Unknown=1, NotChecked=0, Total=2162 [2020-07-21 10:54:19,154 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand 24 states. [2020-07-21 10:54:20,451 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2020-07-21 10:54:21,381 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-07-21 10:54:21,964 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:54:22,558 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-07-21 10:54:23,346 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:24,148 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:54:24,932 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:25,549 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:54:26,153 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:26,764 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:54:27,542 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:28,158 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:54:28,952 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:29,564 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 10:54:30,350 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-21 10:54:31,903 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 10:54:32,901 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-07-21 10:54:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:54:33,173 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-07-21 10:54:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 10:54:33,184 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 100 [2020-07-21 10:54:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:54:33,186 INFO L225 Difference]: With dead ends: 90 [2020-07-21 10:54:33,186 INFO L226 Difference]: Without dead ends: 86 [2020-07-21 10:54:33,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 97 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=437, Invalid=3722, Unknown=1, NotChecked=0, Total=4160 [2020-07-21 10:54:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-21 10:54:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-07-21 10:54:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 10:54:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2020-07-21 10:54:33,195 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 100 [2020-07-21 10:54:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:54:33,196 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2020-07-21 10:54:33,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 10:54:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2020-07-21 10:54:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 10:54:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:54:33,198 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:54:33,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:54:33,412 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:54:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:54:33,413 INFO L82 PathProgramCache]: Analyzing trace with hash -970320905, now seen corresponding path program 20 times [2020-07-21 10:54:33,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:54:33,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852584188] [2020-07-21 10:54:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:54:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:54:33,622 WARN L261 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 205 conjunts are in the unsatisfiable core [2020-07-21 10:54:33,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:54:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 10 proven. 410 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2020-07-21 10:54:40,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:54:41,149 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:41,547 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:41,724 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:41,968 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:42,148 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:42,378 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:42,551 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:42,778 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:42,947 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:43,062 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:43,217 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:43,393 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:43,499 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:43,658 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:44,058 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:44,227 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:44,345 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:44,508 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:44,687 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:44,799 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:44,954 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:45,637 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:46,414 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:46,586 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:46,828 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:47,003 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:47,109 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:47,259 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:47,526 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:47,690 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:47,878 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:47,998 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:48,150 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:48,537 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:48,713 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:48,822 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:48,976 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:49,150 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:49,262 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:49,419 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:49,595 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:49,827 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:50,010 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:50,118 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:50,577 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:50,578 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:54:51,504 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:51,894 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:52,065 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:52,178 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:52,341 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:52,617 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:52,769 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:52,954 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:53,066 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:53,217 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:53,491 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:53,649 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:54,047 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:54,225 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:54,339 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:54,492 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:55,243 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:55,244 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:54:56,345 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:54:56,611 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:54:56,766 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:54:57,168 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:57,349 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:57,465 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:57,626 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:58,043 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:58,229 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:58,339 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:58,495 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:58,674 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:58,779 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:58,928 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:54:59,108 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:59,223 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:54:59,758 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:54:59,758 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:00,626 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:01,016 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:01,215 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:01,336 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:01,486 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:01,660 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:01,765 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:01,915 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:02,097 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:02,208 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:02,377 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:02,558 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:02,817 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:03,001 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:03,107 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:03,627 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:03,628 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:03,628 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:03,629 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:04,695 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:04,868 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:04,975 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:05,136 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:05,317 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:05,424 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:05,587 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:06,010 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:06,187 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:06,293 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:06,433 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:07,271 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:07,272 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:08,323 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:08,495 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:08,760 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:08,937 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:09,046 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:09,203 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:09,383 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:09,492 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:09,649 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:09,844 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:09,956 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:10,526 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:10,527 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:11,460 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:11,737 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:11,898 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:12,093 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:12,208 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:12,380 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:12,598 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:12,729 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:13,315 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:13,316 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:13,317 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:13,317 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:14,240 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:14,656 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:14,836 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:14,948 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 10:55:15,553 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:15,554 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:16,580 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:16,749 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:17,391 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:17,392 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:18,784 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:18,785 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 10:55:21,040 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:21,229 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:21,342 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 10:55:21,486 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:21,802 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:22,118 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:22,425 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:24,170 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:24,497 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:24,826 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:25,503 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 3 conjuncts [2020-07-21 10:55:25,504 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:27,246 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:27,558 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-07-21 10:55:28,377 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 10:55:28,381 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:28,382 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:55:28,382 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:28,383 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 10:55:29,374 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 10:55:30,609 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 10:55:30,770 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21