/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 [2020-07-20 12:03:42,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:03:42,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:03:42,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:03:42,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:03:42,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:03:42,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:03:42,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:03:42,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:03:42,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:03:42,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:03:42,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:03:42,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:03:42,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:03:42,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:03:42,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:03:42,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:03:42,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:03:42,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:03:42,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:03:42,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:03:42,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:03:42,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:03:42,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:03:42,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:03:42,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:03:42,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:03:42,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:03:42,255 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 12:03:42,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:03:42,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:03:42,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:03:42,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:03:42,273 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:03:42,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:03:42,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:03:42,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:03:42,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:03:42,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:03:42,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:03:42,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:03:42,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:03:42,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:03:42,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:03:42,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:03:42,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:03:42,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:03:42,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:03:42,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:03:42,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:03:42,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:03:42,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:03:42,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:03:42,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:03:42,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:03:42,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:42,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:03:42,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:03:42,278 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 12:03:42,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:03:42,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:03:42,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:03:42,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:03:42,618 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:03:42,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-20 12:03:42,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1211bcc53/2032b98bf6934af6bd2aba1cf5539669/FLAG1148543d2 [2020-07-20 12:03:43,172 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:03:43,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-20 12:03:43,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1211bcc53/2032b98bf6934af6bd2aba1cf5539669/FLAG1148543d2 [2020-07-20 12:03:43,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1211bcc53/2032b98bf6934af6bd2aba1cf5539669 [2020-07-20 12:03:43,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:03:43,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:03:43,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:43,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:03:43,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:03:43,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c258e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43, skipping insertion in model container [2020-07-20 12:03:43,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:03:43,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:03:43,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:43,775 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:03:43,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:43,812 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:03:43,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43 WrapperNode [2020-07-20 12:03:43,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:43,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:03:43,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:03:43,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:03:43,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (1/1) ... [2020-07-20 12:03:43,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:03:43,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:03:43,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:03:43,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:03:43,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (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 12:03:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:03:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:03:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:03:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 12:03:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:03:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:03:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:03:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:03:44,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:03:44,293 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 12:03:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:44 BoogieIcfgContainer [2020-07-20 12:03:44,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:03:44,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:03:44,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:03:44,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:03:44,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:03:43" (1/3) ... [2020-07-20 12:03:44,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d35a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:44, skipping insertion in model container [2020-07-20 12:03:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:43" (2/3) ... [2020-07-20 12:03:44,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d35a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:44, skipping insertion in model container [2020-07-20 12:03:44,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:44" (3/3) ... [2020-07-20 12:03:44,309 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-07-20 12:03:44,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:03:44,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:03:44,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:03:44,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:03:44,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:03:44,384 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:03:44,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:03:44,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:03:44,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:03:44,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:03:44,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:03:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 12:03:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 12:03:44,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:44,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:44,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash -362650722, now seen corresponding path program 1 times [2020-07-20 12:03:44,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:44,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832333036] [2020-07-20 12:03:44,440 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 12:03:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:44,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 12:03:44,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:44,643 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 12:03:44,681 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 12:03:44,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:03:44,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832333036] [2020-07-20 12:03:44,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:03:44,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 12:03:44,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368293040] [2020-07-20 12:03:44,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 12:03:44,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 12:03:44,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 12:03:44,708 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2020-07-20 12:03:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:45,010 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-07-20 12:03:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 12:03:45,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-20 12:03:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:45,019 INFO L225 Difference]: With dead ends: 47 [2020-07-20 12:03:45,020 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 12:03:45,023 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 [2020-07-20 12:03:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 12:03:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 12:03:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 12:03:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-20 12:03:45,063 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-20 12:03:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:45,064 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-20 12:03:45,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 12:03:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-20 12:03:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 12:03:45,065 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:45,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:45,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:45,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1126137131, now seen corresponding path program 1 times [2020-07-20 12:03:45,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:45,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722447037] [2020-07-20 12:03:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:03:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:45,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 12:03:45,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:45,444 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 12:03:45,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:45,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:45,586 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 12:03:45,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722447037] [2020-07-20 12:03:45,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:45,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-20 12:03:45,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248952333] [2020-07-20 12:03:45,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 12:03:45,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 12:03:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 12:03:45,597 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2020-07-20 12:03:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:45,846 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-07-20 12:03:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 12:03:45,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-07-20 12:03:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:45,848 INFO L225 Difference]: With dead ends: 26 [2020-07-20 12:03:45,848 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 12:03:45,850 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 [2020-07-20 12:03:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 12:03:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-20 12:03:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 12:03:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-20 12:03:45,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2020-07-20 12:03:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:45,856 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-20 12:03:45,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 12:03:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-20 12:03:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 12:03:45,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:45,858 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:46,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:46,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1467221666, now seen corresponding path program 2 times [2020-07-20 12:03:46,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:46,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543063902] [2020-07-20 12:03:46,075 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 12:03:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:46,107 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 12:03:46,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:46,263 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 12:03:46,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:46,291 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:46,476 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 12:03:46,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543063902] [2020-07-20 12:03:46,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:46,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-20 12:03:46,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285141743] [2020-07-20 12:03:46,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 12:03:46,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:46,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 12:03:46,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-07-20 12:03:46,479 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2020-07-20 12:03:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:47,084 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-07-20 12:03:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 12:03:47,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2020-07-20 12:03:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:47,086 INFO L225 Difference]: With dead ends: 32 [2020-07-20 12:03:47,086 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 12:03:47,087 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 [2020-07-20 12:03:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 12:03:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 12:03:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 12:03:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-07-20 12:03:47,094 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2020-07-20 12:03:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:47,095 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-07-20 12:03:47,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 12:03:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-07-20 12:03:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 12:03:47,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:47,096 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:47,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:47,311 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:47,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2094249470, now seen corresponding path program 3 times [2020-07-20 12:03:47,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:47,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076693314] [2020-07-20 12:03:47,313 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 12:03:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:47,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 73 conjunts are in the unsatisfiable core [2020-07-20 12:03:47,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:47,674 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 12:03:47,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:47,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:48,238 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 12:03:48,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076693314] [2020-07-20 12:03:48,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:48,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-20 12:03:48,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362208923] [2020-07-20 12:03:48,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 12:03:48,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 12:03:48,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-07-20 12:03:48,242 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 30 states. [2020-07-20 12:03:48,808 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-07-20 12:03:49,087 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-07-20 12:03:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:50,025 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-07-20 12:03:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 12:03:50,026 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 23 [2020-07-20 12:03:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:50,027 INFO L225 Difference]: With dead ends: 44 [2020-07-20 12:03:50,027 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 12:03:50,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=566, Invalid=1504, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 12:03:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 12:03:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 12:03:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 12:03:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-07-20 12:03:50,041 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 23 [2020-07-20 12:03:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:50,041 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-07-20 12:03:50,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 12:03:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-07-20 12:03:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 12:03:50,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:50,043 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:50,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:50,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash -810203330, now seen corresponding path program 4 times [2020-07-20 12:03:50,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:50,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232249263] [2020-07-20 12:03:50,261 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 12:03:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:50,312 WARN L261 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-20 12:03:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:51,111 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 12:03:51,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:51,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:52,775 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 12:03:52,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232249263] [2020-07-20 12:03:52,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:52,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 54 [2020-07-20 12:03:52,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255916366] [2020-07-20 12:03:52,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-20 12:03:52,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-20 12:03:52,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 12:03:52,780 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 54 states. [2020-07-20 12:03:53,757 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-07-20 12:03:54,147 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2020-07-20 12:03:54,486 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-20 12:03:54,829 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2020-07-20 12:03:55,166 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-07-20 12:03:55,554 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 12:03:55,870 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-20 12:03:56,220 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-20 12:03:56,513 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 12:03:56,789 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-07-20 12:03:57,055 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-07-20 12:04:00,007 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-20 12:04:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:04:00,031 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2020-07-20 12:04:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 12:04:00,036 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 35 [2020-07-20 12:04:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:04:00,037 INFO L225 Difference]: With dead ends: 68 [2020-07-20 12:04:00,037 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 12:04:00,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1958, Invalid=4684, Unknown=0, NotChecked=0, Total=6642 [2020-07-20 12:04:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 12:04:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 12:04:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 12:04:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-07-20 12:04:00,061 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 35 [2020-07-20 12:04:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:04:00,062 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-07-20 12:04:00,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-20 12:04:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-07-20 12:04:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 12:04:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:04:00,067 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:04:00,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:04:00,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:04:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:04:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash 404277694, now seen corresponding path program 5 times [2020-07-20 12:04:00,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:04:00,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957235704] [2020-07-20 12:04:00,285 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 12:04:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:04:00,376 WARN L261 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 289 conjunts are in the unsatisfiable core [2020-07-20 12:04:00,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:04:02,934 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 12:04:02,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:04:03,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:04:09,378 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 12:04:09,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957235704] [2020-07-20 12:04:09,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:04:09,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 102 [2020-07-20 12:04:09,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840342614] [2020-07-20 12:04:09,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-07-20 12:04:09,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:04:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-07-20 12:04:09,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=7884, Unknown=0, NotChecked=0, Total=10302 [2020-07-20 12:04:09,384 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 102 states. [2020-07-20 12:04:12,835 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-07-20 12:04:13,903 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 196 [2020-07-20 12:04:15,251 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-07-20 12:04:16,158 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 195 [2020-07-20 12:04:17,499 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-20 12:04:18,967 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-07-20 12:04:20,265 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-07-20 12:04:21,547 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-07-20 12:04:22,797 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-07-20 12:04:24,029 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-07-20 12:04:25,242 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-07-20 12:04:26,407 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-07-20 12:04:27,554 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-20 12:04:28,683 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-20 12:04:29,788 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 12:04:30,871 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-07-20 12:04:31,953 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-07-20 12:04:32,991 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-07-20 12:04:33,997 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-07-20 12:04:35,019 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-07-20 12:04:35,995 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-07-20 12:04:36,934 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-07-20 12:04:37,864 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-07-20 12:04:38,755 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-07-20 12:04:39,619 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-20 12:04:40,467 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-07-20 12:04:41,290 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-07-20 12:04:42,083 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-20 12:04:42,851 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-07-20 12:04:43,586 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 12:04:44,296 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-20 12:04:44,992 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-20 12:04:45,671 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 12:04:46,320 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-07-20 12:04:46,946 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-07-20 12:04:47,554 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-20 12:04:48,124 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-20 12:04:48,681 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-07-20 12:04:54,656 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-07-20 12:04:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:04:54,678 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2020-07-20 12:04:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-07-20 12:04:54,680 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 59 [2020-07-20 12:04:54,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:04:54,682 INFO L225 Difference]: With dead ends: 116 [2020-07-20 12:04:54,682 INFO L226 Difference]: Without dead ends: 108 [2020-07-20 12:04:54,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=7334, Invalid=16228, Unknown=0, NotChecked=0, Total=23562 [2020-07-20 12:04:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-20 12:04:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-07-20 12:04:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-20 12:04:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2020-07-20 12:04:54,734 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 59 [2020-07-20 12:04:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:04:54,735 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2020-07-20 12:04:54,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-07-20 12:04:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2020-07-20 12:04:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-20 12:04:54,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:04:54,738 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:04:54,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:04:54,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:04:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:04:54,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1109479102, now seen corresponding path program 6 times [2020-07-20 12:04:54,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:04:54,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962932558] [2020-07-20 12:04:54,950 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 12:04:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:04:55,118 WARN L261 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 577 conjunts are in the unsatisfiable core [2020-07-20 12:04:55,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:05:05,860 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 12:05:05,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:05:06,324 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:05:42,288 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 12:05:42,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962932558] [2020-07-20 12:05:42,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:05:42,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 198 [2020-07-20 12:05:42,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355447824] [2020-07-20 12:05:42,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2020-07-20 12:05:42,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:05:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2020-07-20 12:05:42,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9426, Invalid=29580, Unknown=0, NotChecked=0, Total=39006 [2020-07-20 12:05:42,298 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 198 states. [2020-07-20 12:06:08,739 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 484 [2020-07-20 12:06:13,154 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 482 DAG size of output: 388 [2020-07-20 12:06:25,113 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 479 [2020-07-20 12:06:29,473 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 481 DAG size of output: 387 [2020-07-20 12:06:43,228 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification that was a NOOP. DAG size: 474 [2020-07-20 12:06:58,871 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification that was a NOOP. DAG size: 469 [2020-07-20 12:07:14,605 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification that was a NOOP. DAG size: 464 [2020-07-20 12:07:30,841 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 459 [2020-07-20 12:07:46,838 WARN L193 SmtUtils]: Spent 3.69 s on a formula simplification that was a NOOP. DAG size: 454 [2020-07-20 12:08:04,059 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification that was a NOOP. DAG size: 449 [2020-07-20 12:08:22,061 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification that was a NOOP. DAG size: 444 [2020-07-20 12:08:41,621 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 439 [2020-07-20 12:09:01,825 WARN L193 SmtUtils]: Spent 3.98 s on a formula simplification that was a NOOP. DAG size: 434 [2020-07-20 12:09:22,519 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 429 [2020-07-20 12:09:43,829 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 424 [2020-07-20 12:10:05,703 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification that was a NOOP. DAG size: 419 [2020-07-20 12:10:28,572 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification that was a NOOP. DAG size: 414 [2020-07-20 12:10:50,845 WARN L193 SmtUtils]: Spent 4.21 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 12:11:14,787 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification that was a NOOP. DAG size: 404 [2020-07-20 12:11:38,920 WARN L193 SmtUtils]: Spent 4.41 s on a formula simplification that was a NOOP. DAG size: 399 [2020-07-20 12:12:03,332 WARN L193 SmtUtils]: Spent 4.40 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-20 12:12:28,216 WARN L193 SmtUtils]: Spent 4.45 s on a formula simplification that was a NOOP. DAG size: 389 [2020-07-20 12:12:53,813 WARN L193 SmtUtils]: Spent 4.56 s on a formula simplification that was a NOOP. DAG size: 384 [2020-07-20 12:13:19,131 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 379 [2020-07-20 12:13:44,999 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification that was a NOOP. DAG size: 374 [2020-07-20 12:14:07,938 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 369 [2020-07-20 12:14:30,955 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification that was a NOOP. DAG size: 364 [2020-07-20 12:14:54,574 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification that was a NOOP. DAG size: 359 [2020-07-20 12:15:18,221 WARN L193 SmtUtils]: Spent 3.79 s on a formula simplification that was a NOOP. DAG size: 354 [2020-07-20 12:15:41,739 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification that was a NOOP. DAG size: 349 [2020-07-20 12:16:03,560 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification that was a NOOP. DAG size: 344 [2020-07-20 12:16:26,126 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 339 [2020-07-20 12:16:51,361 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 334 [2020-07-20 12:17:15,020 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 329 [2020-07-20 12:17:30,683 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 324 [2020-07-20 12:17:45,963 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 319 [2020-07-20 12:18:01,202 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 314