/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 [2020-07-20 12:03:16,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:03:16,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:03:16,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:03:16,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:03:16,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:03:16,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:03:16,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:03:16,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:03:16,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:03:16,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:03:16,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:03:16,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:03:16,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:03:16,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:03:16,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:03:16,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:03:16,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:03:16,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:03:16,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:03:16,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:03:16,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:03:16,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:03:16,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:03:16,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:03:16,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:03:16,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:03:16,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:03:16,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:03:16,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:03:16,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:03:16,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:03:16,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:03:16,929 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:03:16,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:03:16,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:03:16,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:03:16,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:03:16,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:03:16,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:03:16,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:03:16,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:03:16,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:03:16,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:03:16,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:03:16,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:03:16,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:03:16,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:03:16,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:03:16,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:03:16,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:16,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:03:16,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:03:16,940 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 [2020-07-20 12:03:17,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:03:17,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:03:17,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:03:17,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:03:17,238 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:03:17,239 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-20 12:03:17,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626de8332/9d013f3e17614f0fa74177c780786ff0/FLAG456ac647e [2020-07-20 12:03:17,756 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:03:17,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-20 12:03:17,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626de8332/9d013f3e17614f0fa74177c780786ff0/FLAG456ac647e [2020-07-20 12:03:18,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626de8332/9d013f3e17614f0fa74177c780786ff0 [2020-07-20 12:03:18,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:03:18,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:03:18,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:18,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:03:18,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:03:18,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f8717a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18, skipping insertion in model container [2020-07-20 12:03:18,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:03:18,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:03:18,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:18,359 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:03:18,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:18,385 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:03:18,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18 WrapperNode [2020-07-20 12:03:18,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:18,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:03:18,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:03:18,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:03:18,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... [2020-07-20 12:03:18,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:03:18,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:03:18,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:03:18,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:03:18,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:03:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:03:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:03:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:03:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 12:03:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:03:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:03:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:03:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:03:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:03:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:03:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:03:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:03:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:03:18,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:03:18,768 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 12:03:18,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:18 BoogieIcfgContainer [2020-07-20 12:03:18,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:03:18,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:03:18,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:03:18,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:03:18,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:03:18" (1/3) ... [2020-07-20 12:03:18,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13637ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:18, skipping insertion in model container [2020-07-20 12:03:18,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:18" (2/3) ... [2020-07-20 12:03:18,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13637ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:18, skipping insertion in model container [2020-07-20 12:03:18,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:18" (3/3) ... [2020-07-20 12:03:18,782 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-07-20 12:03:18,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:03:18,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:03:18,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:03:18,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:03:18,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:03:18,887 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:03:18,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:03:18,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:03:18,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:03:18,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:03:18,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:03:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 12:03:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 12:03:18,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:18,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:18,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash -42161200, now seen corresponding path program 1 times [2020-07-20 12:03:18,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:18,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382049604] [2020-07-20 12:03:18,939 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 [2020-07-20 12:03:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:18,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 12:03:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:19,104 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 12:03:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:19,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:03:19,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382049604] [2020-07-20 12:03:19,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:03:19,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 12:03:19,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363649278] [2020-07-20 12:03:19,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 12:03:19,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 12:03:19,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 12:03:19,172 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-07-20 12:03:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:19,405 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-07-20 12:03:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 12:03:19,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-20 12:03:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:19,415 INFO L225 Difference]: With dead ends: 46 [2020-07-20 12:03:19,415 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 12:03:19,418 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 [2020-07-20 12:03:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 12:03:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 12:03:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 12:03:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-20 12:03:19,462 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-20 12:03:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:19,462 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-20 12:03:19,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 12:03:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-20 12:03:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 12:03:19,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:19,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:19,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:19,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:19,678 INFO L82 PathProgramCache]: Analyzing trace with hash 219103455, now seen corresponding path program 1 times [2020-07-20 12:03:19,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:19,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496692246] [2020-07-20 12:03:19,680 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 [2020-07-20 12:03:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:19,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 12:03:19,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:19,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:19,849 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:19,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496692246] [2020-07-20 12:03:19,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:19,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-20 12:03:19,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639889326] [2020-07-20 12:03:19,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 12:03:19,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:19,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 12:03:19,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 12:03:19,970 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-20 12:03:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:20,240 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-20 12:03:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 12:03:20,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-20 12:03:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:20,242 INFO L225 Difference]: With dead ends: 25 [2020-07-20 12:03:20,242 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 12:03:20,249 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 [2020-07-20 12:03:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 12:03:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 12:03:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 12:03:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 12:03:20,262 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-07-20 12:03:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:20,263 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 12:03:20,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 12:03:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 12:03:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 12:03:20,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:20,265 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:20,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:20,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1744767088, now seen corresponding path program 2 times [2020-07-20 12:03:20,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:20,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980651307] [2020-07-20 12:03:20,469 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 [2020-07-20 12:03:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:20,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 12:03:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:20,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:20,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:20,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980651307] [2020-07-20 12:03:20,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:20,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-20 12:03:20,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549261478] [2020-07-20 12:03:20,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 12:03:20,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:20,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 12:03:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-07-20 12:03:20,887 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-07-20 12:03:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:21,466 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-20 12:03:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 12:03:21,467 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-07-20 12:03:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:21,468 INFO L225 Difference]: With dead ends: 31 [2020-07-20 12:03:21,468 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 12:03:21,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-07-20 12:03:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 12:03:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 12:03:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 12:03:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-20 12:03:21,477 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2020-07-20 12:03:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:21,477 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-20 12:03:21,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 12:03:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-20 12:03:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 12:03:21,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:21,478 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:21,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:21,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:21,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1040440016, now seen corresponding path program 3 times [2020-07-20 12:03:21,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:21,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90316452] [2020-07-20 12:03:21,695 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 [2020-07-20 12:03:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:21,746 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-20 12:03:21,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:22,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:22,050 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:22,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90316452] [2020-07-20 12:03:22,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:22,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2020-07-20 12:03:22,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150987550] [2020-07-20 12:03:22,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 12:03:22,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:22,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 12:03:22,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2020-07-20 12:03:22,506 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 29 states. [2020-07-20 12:03:23,031 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-07-20 12:03:23,304 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-07-20 12:03:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:24,220 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-07-20 12:03:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 12:03:24,221 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 22 [2020-07-20 12:03:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:24,223 INFO L225 Difference]: With dead ends: 43 [2020-07-20 12:03:24,224 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 12:03:24,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=560, Invalid=1420, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 12:03:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 12:03:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 12:03:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 12:03:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-07-20 12:03:24,236 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-07-20 12:03:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:24,237 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-07-20 12:03:24,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 12:03:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-07-20 12:03:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 12:03:24,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:24,238 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:24,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:24,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -276146064, now seen corresponding path program 4 times [2020-07-20 12:03:24,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:24,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040751742] [2020-07-20 12:03:24,454 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 [2020-07-20 12:03:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:24,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 99 conjunts are in the unsatisfiable core [2020-07-20 12:03:24,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:25,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:25,337 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:26,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040751742] [2020-07-20 12:03:26,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:26,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 53 [2020-07-20 12:03:26,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337344700] [2020-07-20 12:03:26,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 12:03:26,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:26,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 12:03:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 12:03:26,785 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 53 states. [2020-07-20 12:03:27,710 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 12:03:28,097 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2020-07-20 12:03:28,437 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:03:28,773 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-07-20 12:03:29,096 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 12:03:29,469 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-20 12:03:29,790 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 12:03:30,097 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 12:03:30,371 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-20 12:03:30,656 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 12:03:30,923 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 12:03:31,168 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-20 12:03:33,701 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:03:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:33,718 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2020-07-20 12:03:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 12:03:33,720 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 34 [2020-07-20 12:03:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:33,721 INFO L225 Difference]: With dead ends: 67 [2020-07-20 12:03:33,721 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 12:03:33,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1952, Invalid=4528, Unknown=0, NotChecked=0, Total=6480 [2020-07-20 12:03:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 12:03:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 12:03:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 12:03:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-20 12:03:33,741 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 34 [2020-07-20 12:03:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:33,742 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-20 12:03:33,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 12:03:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-20 12:03:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 12:03:33,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:33,744 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:33,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:33,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:33,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2111955216, now seen corresponding path program 5 times [2020-07-20 12:03:33,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:33,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632994256] [2020-07-20 12:03:33,961 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 [2020-07-20 12:03:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:34,033 WARN L261 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 195 conjunts are in the unsatisfiable core [2020-07-20 12:03:34,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:36,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:36,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:03:42,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632994256] [2020-07-20 12:03:42,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:42,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 101 [2020-07-20 12:03:42,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118970630] [2020-07-20 12:03:42,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-20 12:03:42,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-20 12:03:42,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2413, Invalid=7687, Unknown=0, NotChecked=0, Total=10100 [2020-07-20 12:03:42,077 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 101 states. [2020-07-20 12:03:45,363 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-07-20 12:03:46,389 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 194 [2020-07-20 12:03:47,677 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 12:03:48,603 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 193 [2020-07-20 12:03:49,862 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-20 12:03:51,252 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-07-20 12:03:52,497 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-07-20 12:03:53,688 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-07-20 12:03:54,836 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-07-20 12:03:55,958 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-07-20 12:03:57,022 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-07-20 12:03:58,110 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-07-20 12:03:59,174 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-20 12:04:00,200 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 12:04:01,225 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-07-20 12:04:02,221 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-07-20 12:04:03,222 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-07-20 12:04:04,188 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-07-20 12:04:05,071 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-20 12:04:05,939 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-07-20 12:04:06,864 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-07-20 12:04:07,744 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-07-20 12:04:08,616 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-07-20 12:04:09,472 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-07-20 12:04:10,291 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-07-20 12:04:11,102 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-07-20 12:04:11,884 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 12:04:12,585 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:04:13,285 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 12:04:13,937 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-20 12:04:14,569 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 12:04:15,188 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 12:04:15,780 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-20 12:04:16,367 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 12:04:16,960 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 12:04:17,540 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-20 12:04:18,116 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-07-20 12:04:24,195 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 12:04:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:04:24,221 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2020-07-20 12:04:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-07-20 12:04:24,222 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 58 [2020-07-20 12:04:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:04:24,223 INFO L225 Difference]: With dead ends: 115 [2020-07-20 12:04:24,224 INFO L226 Difference]: Without dead ends: 107 [2020-07-20 12:04:24,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 46.8s TimeCoverageRelationStatistics Valid=7328, Invalid=15928, Unknown=0, NotChecked=0, Total=23256 [2020-07-20 12:04:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-20 12:04:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-20 12:04:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 12:04:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-07-20 12:04:24,257 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 58 [2020-07-20 12:04:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:04:24,258 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-07-20 12:04:24,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-20 12:04:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-07-20 12:04:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-20 12:04:24,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:04:24,262 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:04:24,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:04:24,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:04:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:04:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash -236770320, now seen corresponding path program 6 times [2020-07-20 12:04:24,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:04:24,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164880599] [2020-07-20 12:04:24,470 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 [2020-07-20 12:04:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:04:24,594 WARN L261 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 387 conjunts are in the unsatisfiable core [2020-07-20 12:04:24,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:04:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:04:34,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:04:34,659 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:05:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:05:04,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164880599] [2020-07-20 12:05:04,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:05:04,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 197 [2020-07-20 12:05:04,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404680856] [2020-07-20 12:05:04,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2020-07-20 12:05:04,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:05:04,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2020-07-20 12:05:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9421, Invalid=29191, Unknown=0, NotChecked=0, Total=38612 [2020-07-20 12:05:04,225 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 197 states. [2020-07-20 12:05:22,113 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 482 [2020-07-20 12:05:25,449 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 480 DAG size of output: 386 [2020-07-20 12:05:34,147 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 477 [2020-07-20 12:05:37,485 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 479 DAG size of output: 385 [2020-07-20 12:05:46,831 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 472 [2020-07-20 12:05:56,387 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 467 [2020-07-20 12:06:06,613 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 462 [2020-07-20 12:06:17,509 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 457 [2020-07-20 12:06:28,995 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 452 [2020-07-20 12:06:41,399 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 447 [2020-07-20 12:06:52,865 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 442 [2020-07-20 12:07:04,841 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 437 [2020-07-20 12:07:15,613 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 432 [2020-07-20 12:07:27,295 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 427 [2020-07-20 12:07:40,158 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 422 [2020-07-20 12:07:52,096 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 417 [2020-07-20 12:08:04,722 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 412 [2020-07-20 12:08:18,511 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 407 [2020-07-20 12:08:32,558 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification that was a NOOP. DAG size: 402 [2020-07-20 12:08:47,663 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 397 [2020-07-20 12:09:02,863 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 392 [2020-07-20 12:09:19,821 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 387 [2020-07-20 12:09:37,316 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 382 [2020-07-20 12:09:56,697 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 377 [2020-07-20 12:10:15,210 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 372 [2020-07-20 12:10:35,590 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification that was a NOOP. DAG size: 367 [2020-07-20 12:10:55,881 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 362 [2020-07-20 12:11:15,086 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 357 [2020-07-20 12:11:33,589 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 352 [2020-07-20 12:11:54,260 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 347 [2020-07-20 12:12:14,053 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification that was a NOOP. DAG size: 342 [2020-07-20 12:12:34,229 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification that was a NOOP. DAG size: 337 [2020-07-20 12:12:54,370 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 332 [2020-07-20 12:13:13,568 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 327 [2020-07-20 12:13:33,930 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 12:13:51,316 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 317 [2020-07-20 12:14:07,135 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 312 [2020-07-20 12:14:22,610 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 307 [2020-07-20 12:14:37,831 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 12:14:52,979 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 297 [2020-07-20 12:15:08,017 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 292 [2020-07-20 12:15:23,052 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 287 [2020-07-20 12:15:37,830 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 282 [2020-07-20 12:15:52,436 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 12:16:07,068 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 272 [2020-07-20 12:16:21,685 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 267 [2020-07-20 12:16:36,143 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 262 [2020-07-20 12:16:50,562 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 257 [2020-07-20 12:17:04,733 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 252 [2020-07-20 12:17:18,595 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 247 [2020-07-20 12:17:32,259 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 242 [2020-07-20 12:17:45,765 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 237