/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_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:54:08,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:54:08,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:54:08,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:54:08,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:54:08,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:54:08,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:54:08,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:54:08,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:54:08,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:54:08,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:54:08,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:54:08,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:54:08,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:54:08,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:54:08,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:54:08,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:54:08,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:54:08,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:54:08,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:54:08,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:54:08,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:54:08,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:54:08,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:54:08,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:54:08,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:54:08,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:54:08,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:54:08,749 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 11:54:08,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:54:08,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:54:08,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:54:08,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:54:08,773 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:54:08,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:54:08,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:54:08,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:54:08,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:54:08,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:54:08,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:54:08,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:54:08,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:54:08,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:54:08,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:54:08,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:54:08,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:54:08,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:54:08,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:54:08,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:54:08,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:54:08,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:54:08,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:54:08,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:54:08,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:54:08,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:54:08,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:08,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:54:08,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:54:08,777 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 11:54:09,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:54:09,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:54:09,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:54:09,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:54:09,062 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:54:09,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-21 11:54:09,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44a38039/f2aea663b8d04d2c89a1740429acb184/FLAGc12448989 [2020-07-21 11:54:09,596 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:54:09,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-21 11:54:09,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44a38039/f2aea663b8d04d2c89a1740429acb184/FLAGc12448989 [2020-07-21 11:54:09,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44a38039/f2aea663b8d04d2c89a1740429acb184 [2020-07-21 11:54:09,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:54:09,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:54:09,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:54:09,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:54:09,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:54:09,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:54:09" (1/1) ... [2020-07-21 11:54:09,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d24e66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:09, skipping insertion in model container [2020-07-21 11:54:09,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:54:09" (1/1) ... [2020-07-21 11:54:09,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:54:10,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:54:10,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:54:10,181 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:54:10,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:54:10,206 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:54:10,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10 WrapperNode [2020-07-21 11:54:10,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:54:10,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:54:10,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:54:10,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:54:10,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (1/1) ... [2020-07-21 11:54:10,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:54:10,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:54:10,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:54:10,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:54:10,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (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 11:54:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:54:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:54:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:54:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:54:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:54:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:54:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:54:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:54:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:54:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:54:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:54:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:54:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:54:10,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:54:10,576 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:54:10,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:54:10 BoogieIcfgContainer [2020-07-21 11:54:10,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:54:10,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:54:10,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:54:10,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:54:10,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:54:09" (1/3) ... [2020-07-21 11:54:10,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157daa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:54:10, skipping insertion in model container [2020-07-21 11:54:10,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:54:10" (2/3) ... [2020-07-21 11:54:10,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157daa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:54:10, skipping insertion in model container [2020-07-21 11:54:10,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:54:10" (3/3) ... [2020-07-21 11:54:10,590 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-07-21 11:54:10,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:54:10,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:54:10,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:54:10,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:54:10,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:54:10,681 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:54:10,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:54:10,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:54:10,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:54:10,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:54:10,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:54:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-21 11:54:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:54:10,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:10,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:10,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:10,714 INFO L82 PathProgramCache]: Analyzing trace with hash -362650722, now seen corresponding path program 1 times [2020-07-21 11:54:10,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:10,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100487490] [2020-07-21 11:54:10,721 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 11:54:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 11:54:10,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:10,882 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:54:10,922 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 11:54:10,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:54:10,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100487490] [2020-07-21 11:54:10,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:54:10,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:54:10,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719549521] [2020-07-21 11:54:10,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:54:10,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:54:10,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:54:10,944 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2020-07-21 11:54:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:11,188 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-07-21 11:54:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:54:11,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-21 11:54:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:11,201 INFO L225 Difference]: With dead ends: 47 [2020-07-21 11:54:11,201 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 11:54:11,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 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 11:54:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 11:54:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 11:54:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 11:54:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-21 11:54:11,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-21 11:54:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:11,260 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-21 11:54:11,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:54:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-21 11:54:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 11:54:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:11,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:11,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:11,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:11,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1126137131, now seen corresponding path program 1 times [2020-07-21 11:54:11,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:11,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916214658] [2020-07-21 11:54:11,480 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 11:54:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 11:54:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:11,600 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 11:54:11,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:11,630 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:11,720 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 11:54:11,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916214658] [2020-07-21 11:54:11,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:11,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 11:54:11,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67104596] [2020-07-21 11:54:11,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:54:11,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:54:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:54:11,725 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2020-07-21 11:54:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:11,976 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-07-21 11:54:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:54:11,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-07-21 11:54:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:11,978 INFO L225 Difference]: With dead ends: 26 [2020-07-21 11:54:11,978 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 11:54:11,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:54:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 11:54:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 11:54:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 11:54:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-21 11:54:11,985 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2020-07-21 11:54:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:11,985 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-21 11:54:11,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:54:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-21 11:54:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:54:11,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:11,987 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:12,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:12,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1467221666, now seen corresponding path program 2 times [2020-07-21 11:54:12,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:12,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484118526] [2020-07-21 11:54:12,201 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) [2020-07-21 11:54:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:12,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 37 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:12,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:12,367 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 11:54:12,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:12,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:12,570 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 11:54:12,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484118526] [2020-07-21 11:54:12,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:12,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-21 11:54:12,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978929446] [2020-07-21 11:54:12,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 11:54:12,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:12,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 11:54:12,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:54:12,573 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2020-07-21 11:54:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:13,133 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-07-21 11:54:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:54:13,134 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2020-07-21 11:54:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:13,135 INFO L225 Difference]: With dead ends: 32 [2020-07-21 11:54:13,135 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 11:54:13,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-07-21 11:54:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 11:54:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 11:54:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 11:54:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-07-21 11:54:13,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2020-07-21 11:54:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:13,143 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-07-21 11:54:13,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 11:54:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-07-21 11:54:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:54:13,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:13,144 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:13,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:13,358 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2094249470, now seen corresponding path program 3 times [2020-07-21 11:54:13,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:13,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206016861] [2020-07-21 11:54:13,359 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 11:54:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:13,401 WARN L261 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 73 conjunts are in the unsatisfiable core [2020-07-21 11:54:13,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:13,698 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 11:54:13,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:13,754 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:14,236 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 11:54:14,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206016861] [2020-07-21 11:54:14,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:14,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 11:54:14,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934838816] [2020-07-21 11:54:14,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 11:54:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 11:54:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-07-21 11:54:14,239 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 30 states. [2020-07-21 11:54:14,789 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-07-21 11:54:15,061 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-07-21 11:54:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:16,001 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-07-21 11:54:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 11:54:16,001 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 23 [2020-07-21 11:54:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:16,002 INFO L225 Difference]: With dead ends: 44 [2020-07-21 11:54:16,002 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 11:54:16,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=566, Invalid=1504, Unknown=0, NotChecked=0, Total=2070 [2020-07-21 11:54:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 11:54:16,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-21 11:54:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 11:54:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-07-21 11:54:16,014 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 23 [2020-07-21 11:54:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:16,016 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-07-21 11:54:16,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-21 11:54:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-07-21 11:54:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 11:54:16,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:16,019 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:16,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:16,227 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash -810203330, now seen corresponding path program 4 times [2020-07-21 11:54:16,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:16,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546903892] [2020-07-21 11:54:16,230 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 11:54:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:16,276 WARN L261 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 11:54:16,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:17,048 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 11:54:17,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:17,133 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:18,691 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 11:54:18,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546903892] [2020-07-21 11:54:18,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:18,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 54 [2020-07-21 11:54:18,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301191749] [2020-07-21 11:54:18,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-21 11:54:18,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-21 11:54:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2020-07-21 11:54:18,695 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 54 states. [2020-07-21 11:54:19,648 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-07-21 11:54:20,032 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2020-07-21 11:54:20,377 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-21 11:54:20,712 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2020-07-21 11:54:21,050 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-07-21 11:54:21,434 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-21 11:54:21,742 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-21 11:54:22,090 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-21 11:54:22,377 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-21 11:54:22,651 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-07-21 11:54:22,904 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-07-21 11:54:23,165 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-21 11:54:25,775 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-21 11:54:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:54:25,791 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2020-07-21 11:54:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-21 11:54:25,793 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 35 [2020-07-21 11:54:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:54:25,795 INFO L225 Difference]: With dead ends: 68 [2020-07-21 11:54:25,795 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 11:54:25,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1958, Invalid=4684, Unknown=0, NotChecked=0, Total=6642 [2020-07-21 11:54:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 11:54:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-21 11:54:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 11:54:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-07-21 11:54:25,813 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 35 [2020-07-21 11:54:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:54:25,813 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-07-21 11:54:25,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-21 11:54:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-07-21 11:54:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-21 11:54:25,815 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:54:25,815 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:54:26,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:54:26,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:54:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:54:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 404277694, now seen corresponding path program 5 times [2020-07-21 11:54:26,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:54:26,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624250573] [2020-07-21 11:54:26,033 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 11:54:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:54:26,118 WARN L261 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 289 conjunts are in the unsatisfiable core [2020-07-21 11:54:26,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:54:28,583 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 11:54:28,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:54:28,762 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:54:34,868 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 11:54:34,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624250573] [2020-07-21 11:54:34,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:54:34,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 102 [2020-07-21 11:54:34,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534984820] [2020-07-21 11:54:34,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-07-21 11:54:34,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:54:34,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-07-21 11:54:34,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=7884, Unknown=0, NotChecked=0, Total=10302 [2020-07-21 11:54:34,874 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 102 states. [2020-07-21 11:54:38,275 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-07-21 11:54:39,302 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 196 [2020-07-21 11:54:40,653 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-07-21 11:54:41,575 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 195 [2020-07-21 11:54:42,946 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-21 11:54:44,380 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-07-21 11:54:45,648 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-07-21 11:54:46,910 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-07-21 11:54:48,160 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-07-21 11:54:49,365 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-07-21 11:54:50,522 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-07-21 11:54:51,672 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-07-21 11:54:52,785 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-21 11:54:53,887 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-21 11:54:54,975 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-21 11:54:56,027 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-07-21 11:54:57,083 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-07-21 11:54:58,092 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-07-21 11:54:59,064 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-07-21 11:55:00,042 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-07-21 11:55:00,962 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-07-21 11:55:01,912 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-07-21 11:55:02,864 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-07-21 11:55:03,747 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-07-21 11:55:04,624 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-21 11:55:05,515 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-07-21 11:55:06,374 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-07-21 11:55:07,183 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-21 11:55:07,921 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-07-21 11:55:08,664 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-21 11:55:09,361 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-21 11:55:10,068 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-21 11:55:10,726 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-21 11:55:11,354 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-07-21 11:55:11,952 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-07-21 11:55:12,524 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-21 11:55:13,070 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-21 11:55:13,658 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-07-21 11:55:19,498 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-07-21 11:55:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:55:19,518 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2020-07-21 11:55:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-07-21 11:55:19,520 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 59 [2020-07-21 11:55:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:55:19,521 INFO L225 Difference]: With dead ends: 116 [2020-07-21 11:55:19,521 INFO L226 Difference]: Without dead ends: 108 [2020-07-21 11:55:19,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=7334, Invalid=16228, Unknown=0, NotChecked=0, Total=23562 [2020-07-21 11:55:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-21 11:55:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-07-21 11:55:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-21 11:55:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2020-07-21 11:55:19,560 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 59 [2020-07-21 11:55:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:55:19,561 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2020-07-21 11:55:19,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-07-21 11:55:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2020-07-21 11:55:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-21 11:55:19,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:55:19,564 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:55:19,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:55:19,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:55:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:55:19,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1109479102, now seen corresponding path program 6 times [2020-07-21 11:55:19,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:55:19,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092721903] [2020-07-21 11:55:19,768 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 11:55:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:55:19,945 WARN L261 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 577 conjunts are in the unsatisfiable core [2020-07-21 11:55:19,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:55:30,312 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 11:55:30,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:55:30,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:56:04,476 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 11:56:04,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092721903] [2020-07-21 11:56:04,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:56:04,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 198 [2020-07-21 11:56:04,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140599288] [2020-07-21 11:56:04,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2020-07-21 11:56:04,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:56:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2020-07-21 11:56:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9426, Invalid=29580, Unknown=0, NotChecked=0, Total=39006 [2020-07-21 11:56:04,486 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 198 states. [2020-07-21 11:56:25,319 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 484 [2020-07-21 11:56:29,075 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 482 DAG size of output: 388 [2020-07-21 11:56:38,517 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 479 [2020-07-21 11:56:41,950 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 481 DAG size of output: 387 [2020-07-21 11:56:51,969 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 474 [2020-07-21 11:57:02,771 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 469 [2020-07-21 11:57:13,604 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 464 [2020-07-21 11:57:24,500 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 459 [2020-07-21 11:57:35,799 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification that was a NOOP. DAG size: 454 [2020-07-21 11:57:47,566 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 449 [2020-07-21 11:57:59,549 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 444 [2020-07-21 11:58:11,905 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 439 [2020-07-21 11:58:24,505 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 434 [2020-07-21 11:58:37,389 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 429 [2020-07-21 11:58:50,544 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 424 [2020-07-21 11:59:04,056 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 419 [2020-07-21 11:59:17,959 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 414 [2020-07-21 11:59:31,781 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-21 11:59:45,993 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 404 [2020-07-21 12:00:00,424 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 399 [2020-07-21 12:00:15,818 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-21 12:00:30,603 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 389 [2020-07-21 12:00:45,529 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 384 [2020-07-21 12:01:00,805 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 379 [2020-07-21 12:01:16,287 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 374 [2020-07-21 12:01:31,824 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 369 [2020-07-21 12:01:47,673 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 364 [2020-07-21 12:02:03,714 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 359 [2020-07-21 12:02:19,848 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 354 [2020-07-21 12:02:35,990 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 349 [2020-07-21 12:02:53,090 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 344 [2020-07-21 12:03:10,223 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 339 [2020-07-21 12:03:27,648 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification that was a NOOP. DAG size: 334 [2020-07-21 12:03:45,319 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 329 [2020-07-21 12:04:02,602 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 324 [2020-07-21 12:04:19,902 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 319 [2020-07-21 12:04:37,096 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 314 [2020-07-21 12:04:54,258 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 309 [2020-07-21 12:05:11,868 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-21 12:05:28,954 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 299 [2020-07-21 12:05:45,685 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 294 [2020-07-21 12:06:02,627 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 289 [2020-07-21 12:06:19,282 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 284 [2020-07-21 12:06:36,045 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 279 [2020-07-21 12:06:52,433 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 274 [2020-07-21 12:07:08,613 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 269 [2020-07-21 12:07:24,723 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 264 [2020-07-21 12:07:40,663 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 259 [2020-07-21 12:07:56,281 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 254 [2020-07-21 12:08:11,577 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 249 [2020-07-21 12:08:26,966 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 244