/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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:54:03,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:54:03,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:54:04,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:54:04,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:54:04,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:54:04,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:54:04,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:54:04,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:54:04,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:54:04,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:54:04,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:54:04,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:54:04,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:54:04,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:54:04,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:54:04,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:54:04,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:54:04,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:54:04,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:54:04,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:54:04,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:54:04,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:54:04,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:54:04,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:54:04,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:54:04,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:54:04,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:54:04,080 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 11:54:04,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:54:04,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:54:04,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:54:04,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:54:04,117 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:54:04,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:54:04,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:54:04,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:54:04,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:54:04,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:54:04,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:54:04,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:54:04,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:54:04,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:54:04,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:54:04,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:54:04,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:54:04,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:54:04,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:54:04,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:54:04,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:54:04,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:54:04,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:54:04,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:54:04,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:54:04,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:54:04,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:04,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:54:04,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:54:04,123 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 11:54:04,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:54:04,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:54:04,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:54:04,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:54:04,446 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:54:04,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-21 11:54:04,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faead58a6/37eb85c74c5f4fbdab984b311a751dfa/FLAG0734eb563 [2020-07-21 11:54:04,967 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:54:04,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-21 11:54:04,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faead58a6/37eb85c74c5f4fbdab984b311a751dfa/FLAG0734eb563 [2020-07-21 11:54:05,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faead58a6/37eb85c74c5f4fbdab984b311a751dfa [2020-07-21 11:54:05,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:54:05,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:54:05,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:54:05,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:54:05,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:54:05,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a47b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05, skipping insertion in model container [2020-07-21 11:54:05,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:54:05,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:54:05,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:54:05,555 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:54:05,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:54:05,587 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:54:05,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05 WrapperNode [2020-07-21 11:54:05,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:54:05,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:54:05,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:54:05,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:54:05,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (1/1) ... [2020-07-21 11:54:05,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:54:05,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:54:05,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:54:05,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:54:05,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (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 11:54:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:54:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:54:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:54:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:54:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:54:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:54:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:54:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:54:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:54:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:54:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:54:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:54:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:54:06,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:54:06,006 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:54:06,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:54:06 BoogieIcfgContainer [2020-07-21 11:54:06,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:54:06,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:54:06,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:54:06,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:54:06,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:54:05" (1/3) ... [2020-07-21 11:54:06,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c67105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:54:06, skipping insertion in model container [2020-07-21 11:54:06,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:05" (2/3) ... [2020-07-21 11:54:06,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c67105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:54:06, skipping insertion in model container [2020-07-21 11:54:06,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:54:06" (3/3) ... [2020-07-21 11:54:06,021 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-07-21 11:54:06,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:54:06,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:54:06,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:54:06,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:54:06,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:54:06,099 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:54:06,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:54:06,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:54:06,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:54:06,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:54:06,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:54:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 11:54:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:54:06,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:06,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:06,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash -42161200, now seen corresponding path program 1 times [2020-07-21 11:54:06,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:06,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99170587] [2020-07-21 11:54:06,180 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 11:54:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:06,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 11:54:06,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:06,341 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:54:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:06,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:54:06,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99170587] [2020-07-21 11:54:06,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:54:06,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:54:06,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351386917] [2020-07-21 11:54:06,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:54:06,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:54:06,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:54:06,407 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-07-21 11:54:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:06,590 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-07-21 11:54:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:54:06,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-21 11:54:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:06,601 INFO L225 Difference]: With dead ends: 46 [2020-07-21 11:54:06,601 INFO L226 Difference]: Without dead ends: 14 [2020-07-21 11:54:06,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:54:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-21 11:54:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-21 11:54:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-21 11:54:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-21 11:54:06,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-21 11:54:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:06,647 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-21 11:54:06,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:54:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-21 11:54:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:54:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:06,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:06,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:06,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash 219103455, now seen corresponding path program 1 times [2020-07-21 11:54:06,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:06,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895901023] [2020-07-21 11:54:06,866 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 11:54:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:06,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 11:54:06,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:06,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:07,000 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:07,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895901023] [2020-07-21 11:54:07,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:07,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-21 11:54:07,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765884759] [2020-07-21 11:54:07,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 11:54:07,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:07,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 11:54:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 11:54:07,100 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-21 11:54:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:07,330 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-21 11:54:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:54:07,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-21 11:54:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:07,331 INFO L225 Difference]: With dead ends: 25 [2020-07-21 11:54:07,332 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 11:54:07,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-07-21 11:54:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 11:54:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-21 11:54:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 11:54:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-21 11:54:07,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-07-21 11:54:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:07,339 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-21 11:54:07,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 11:54:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-21 11:54:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:54:07,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:07,341 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:07,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:07,555 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1744767088, now seen corresponding path program 2 times [2020-07-21 11:54:07,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:07,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184024170] [2020-07-21 11:54:07,557 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 11:54:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:07,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 11:54:07,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:07,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:07,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:07,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184024170] [2020-07-21 11:54:07,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:07,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-21 11:54:07,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433852961] [2020-07-21 11:54:07,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 11:54:07,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:07,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 11:54:07,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-07-21 11:54:07,891 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-07-21 11:54:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:08,435 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-21 11:54:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:54:08,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-07-21 11:54:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:08,437 INFO L225 Difference]: With dead ends: 31 [2020-07-21 11:54:08,437 INFO L226 Difference]: Without dead ends: 23 [2020-07-21 11:54:08,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-07-21 11:54:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-21 11:54:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-21 11:54:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-21 11:54:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-21 11:54:08,445 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2020-07-21 11:54:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:08,446 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-21 11:54:08,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 11:54:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-21 11:54:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:54:08,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:08,447 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:08,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:08,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1040440016, now seen corresponding path program 3 times [2020-07-21 11:54:08,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:08,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147067040] [2020-07-21 11:54:08,665 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 11:54:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:08,704 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-21 11:54:08,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:08,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:09,001 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:09,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147067040] [2020-07-21 11:54:09,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:09,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2020-07-21 11:54:09,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43105107] [2020-07-21 11:54:09,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 11:54:09,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:09,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 11:54:09,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2020-07-21 11:54:09,473 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 29 states. [2020-07-21 11:54:09,953 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-07-21 11:54:10,202 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-07-21 11:54:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:11,051 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-07-21 11:54:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 11:54:11,053 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 22 [2020-07-21 11:54:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:11,054 INFO L225 Difference]: With dead ends: 43 [2020-07-21 11:54:11,054 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 11:54:11,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=560, Invalid=1420, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 11:54:11,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 11:54:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 11:54:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 11:54:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-07-21 11:54:11,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-07-21 11:54:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:11,071 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-07-21 11:54:11,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 11:54:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-07-21 11:54:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:54:11,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:11,074 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:11,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:11,284 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash -276146064, now seen corresponding path program 4 times [2020-07-21 11:54:11,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:11,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187545474] [2020-07-21 11:54:11,287 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 11:54:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:11,329 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 99 conjunts are in the unsatisfiable core [2020-07-21 11:54:11,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:12,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:12,121 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:13,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187545474] [2020-07-21 11:54:13,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:13,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 53 [2020-07-21 11:54:13,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998564889] [2020-07-21 11:54:13,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-21 11:54:13,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:13,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-21 11:54:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2020-07-21 11:54:13,476 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 53 states. [2020-07-21 11:54:14,379 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-21 11:54:14,762 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2020-07-21 11:54:15,077 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-21 11:54:15,399 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-07-21 11:54:15,694 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-21 11:54:16,045 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-21 11:54:16,335 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-21 11:54:16,621 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-21 11:54:16,888 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-21 11:54:17,153 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-21 11:54:17,410 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-21 11:54:20,036 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-21 11:54:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:20,051 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2020-07-21 11:54:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-21 11:54:20,054 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 34 [2020-07-21 11:54:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:20,056 INFO L225 Difference]: With dead ends: 67 [2020-07-21 11:54:20,056 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 11:54:20,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1952, Invalid=4528, Unknown=0, NotChecked=0, Total=6480 [2020-07-21 11:54:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 11:54:20,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-21 11:54:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 11:54:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-21 11:54:20,075 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 34 [2020-07-21 11:54:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:20,075 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-21 11:54:20,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-21 11:54:20,076 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-21 11:54:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 11:54:20,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:20,077 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:20,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:20,279 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:20,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2111955216, now seen corresponding path program 5 times [2020-07-21 11:54:20,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:20,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122424311] [2020-07-21 11:54:20,282 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 11:54:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:20,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 195 conjunts are in the unsatisfiable core [2020-07-21 11:54:20,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:22,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:22,793 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:54:28,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122424311] [2020-07-21 11:54:28,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:28,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 101 [2020-07-21 11:54:28,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498676838] [2020-07-21 11:54:28,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-21 11:54:28,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-21 11:54:28,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2413, Invalid=7687, Unknown=0, NotChecked=0, Total=10100 [2020-07-21 11:54:28,125 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 101 states. [2020-07-21 11:54:31,288 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-07-21 11:54:32,232 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 194 [2020-07-21 11:54:33,439 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-21 11:54:34,289 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 193 [2020-07-21 11:54:35,507 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-21 11:54:36,778 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-07-21 11:54:37,939 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-07-21 11:54:39,066 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-07-21 11:54:40,162 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-07-21 11:54:41,244 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-07-21 11:54:42,301 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-07-21 11:54:43,342 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-07-21 11:54:44,356 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-21 11:54:45,336 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-21 11:54:46,300 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-07-21 11:54:47,223 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-07-21 11:54:48,134 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-07-21 11:54:49,044 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-07-21 11:54:49,902 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-21 11:54:50,763 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-07-21 11:54:51,616 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-07-21 11:54:52,420 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-07-21 11:54:53,238 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-07-21 11:54:54,018 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-07-21 11:54:54,773 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-07-21 11:54:55,493 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-07-21 11:54:56,225 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-21 11:54:56,923 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-21 11:54:57,598 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-21 11:54:58,271 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-21 11:54:58,910 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-21 11:54:59,498 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-21 11:55:00,077 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-21 11:55:00,638 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-21 11:55:01,171 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-21 11:55:01,710 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-21 11:55:07,956 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-21 11:55:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:55:07,975 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2020-07-21 11:55:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-07-21 11:55:07,976 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 58 [2020-07-21 11:55:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:55:07,978 INFO L225 Difference]: With dead ends: 115 [2020-07-21 11:55:07,978 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 11:55:07,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=7328, Invalid=15928, Unknown=0, NotChecked=0, Total=23256 [2020-07-21 11:55:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 11:55:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-21 11:55:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-21 11:55:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-07-21 11:55:08,011 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 58 [2020-07-21 11:55:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:55:08,011 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-07-21 11:55:08,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-21 11:55:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-07-21 11:55:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-21 11:55:08,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:55:08,015 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:55:08,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:55:08,231 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:55:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:55:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash -236770320, now seen corresponding path program 6 times [2020-07-21 11:55:08,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:55:08,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116964748] [2020-07-21 11:55:08,233 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 11:55:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:55:08,354 WARN L261 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 387 conjunts are in the unsatisfiable core [2020-07-21 11:55:08,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:55:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:55:17,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:55:17,762 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:55:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:55:45,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116964748] [2020-07-21 11:55:45,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:55:45,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 197 [2020-07-21 11:55:45,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726499710] [2020-07-21 11:55:45,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2020-07-21 11:55:45,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:55:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2020-07-21 11:55:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9421, Invalid=29191, Unknown=0, NotChecked=0, Total=38612 [2020-07-21 11:55:45,340 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 197 states. [2020-07-21 11:56:02,979 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 482 [2020-07-21 11:56:06,227 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 480 DAG size of output: 386 [2020-07-21 11:56:14,442 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 477 [2020-07-21 11:56:17,593 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 479 DAG size of output: 385 [2020-07-21 11:56:26,621 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 472 [2020-07-21 11:56:36,494 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 467 [2020-07-21 11:56:46,263 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 462 [2020-07-21 11:56:56,584 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 457 [2020-07-21 11:57:07,218 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 452 [2020-07-21 11:57:18,363 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 447 [2020-07-21 11:57:30,002 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 442 [2020-07-21 11:57:40,078 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 437 [2020-07-21 11:57:50,188 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 432 [2020-07-21 11:58:00,758 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 427 [2020-07-21 11:58:11,613 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 422 [2020-07-21 11:58:23,001 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 417 [2020-07-21 11:58:35,142 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 412 [2020-07-21 11:58:47,342 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 407 [2020-07-21 11:59:00,275 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 402 [2020-07-21 11:59:13,616 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 397 [2020-07-21 11:59:27,340 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 392 [2020-07-21 11:59:41,592 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 387 [2020-07-21 11:59:56,002 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 382 [2020-07-21 12:00:10,804 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 377 [2020-07-21 12:00:25,501 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 372 [2020-07-21 12:00:40,466 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 367 [2020-07-21 12:00:56,009 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 362 [2020-07-21 12:01:11,657 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 357 [2020-07-21 12:01:27,404 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 352 [2020-07-21 12:01:43,480 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 347 [2020-07-21 12:01:59,877 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 342 [2020-07-21 12:02:16,457 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 337 [2020-07-21 12:02:33,223 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 332 [2020-07-21 12:02:50,511 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 327 [2020-07-21 12:03:07,737 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 322 [2020-07-21 12:03:25,074 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 317 [2020-07-21 12:03:42,346 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 312 [2020-07-21 12:03:59,851 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 307 [2020-07-21 12:04:17,363 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-21 12:04:34,688 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 297 [2020-07-21 12:04:50,506 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 292 [2020-07-21 12:05:07,067 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 287 [2020-07-21 12:05:25,508 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 282 [2020-07-21 12:05:43,707 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 277 [2020-07-21 12:06:01,779 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification that was a NOOP. DAG size: 272 [2020-07-21 12:06:17,894 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 267 [2020-07-21 12:06:33,758 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 262 [2020-07-21 12:06:51,749 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 257 [2020-07-21 12:07:09,533 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 252 [2020-07-21 12:07:27,175 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 247 [2020-07-21 12:07:43,901 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 242 [2020-07-21 12:07:59,585 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 237 [2020-07-21 12:08:16,666 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 232 [2020-07-21 12:08:29,864 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 227