/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.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:02:59,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:02:59,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:02:59,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:02:59,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:02:59,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:02:59,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:02:59,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:02:59,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:02:59,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:02:59,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:02:59,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:02:59,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:02:59,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:02:59,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:02:59,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:02:59,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:02:59,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:02:59,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:02:59,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:02:59,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:02:59,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:02:59,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:02:59,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:02:59,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:02:59,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:02:59,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:02:59,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:02:59,570 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 12:02:59,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:02:59,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:02:59,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:02:59,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:02:59,590 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:02:59,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:02:59,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:02:59,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:02:59,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:02:59,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:02:59,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:02:59,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:02:59,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:02:59,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:02:59,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:02:59,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:02:59,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:02:59,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:02:59,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:02:59,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:02:59,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:02:59,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:02:59,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:02:59,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:02:59,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:02:59,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:02:59,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:02:59,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:02:59,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:02:59,596 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 12:03:00,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:03:00,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:03:00,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:03:00,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:03:00,033 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:03:00,033 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-20 12:03:00,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56acf6bd2/de0ee641b36a47b7853021699ccb4abb/FLAGe56907af9 [2020-07-20 12:03:00,638 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:03:00,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-20 12:03:00,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56acf6bd2/de0ee641b36a47b7853021699ccb4abb/FLAGe56907af9 [2020-07-20 12:03:00,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56acf6bd2/de0ee641b36a47b7853021699ccb4abb [2020-07-20 12:03:00,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:03:00,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:03:00,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:00,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:03:01,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:03:01,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:00" (1/1) ... [2020-07-20 12:03:01,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43875ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01, skipping insertion in model container [2020-07-20 12:03:01,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:03:00" (1/1) ... [2020-07-20 12:03:01,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:03:01,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:03:01,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:01,402 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:03:01,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:03:01,465 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:03:01,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01 WrapperNode [2020-07-20 12:03:01,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:03:01,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:03:01,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:03:01,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:03:01,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (1/1) ... [2020-07-20 12:03:01,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:03:01,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:03:01,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:03:01,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:03:01,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (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 12:03:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:03:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:03:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:03:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:03:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:03:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:03:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:03:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:03:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:03:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:03:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:03:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:03:01,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:03:01,939 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 12:03:01,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:01 BoogieIcfgContainer [2020-07-20 12:03:01,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:03:01,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:03:01,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:03:01,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:03:01,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:03:00" (1/3) ... [2020-07-20 12:03:01,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751af254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:01, skipping insertion in model container [2020-07-20 12:03:01,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:03:01" (2/3) ... [2020-07-20 12:03:01,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751af254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:03:01, skipping insertion in model container [2020-07-20 12:03:01,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:03:01" (3/3) ... [2020-07-20 12:03:01,957 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-07-20 12:03:01,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:03:01,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:03:02,002 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:03:02,038 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:03:02,038 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:03:02,038 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:03:02,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:03:02,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:03:02,039 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:03:02,039 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:03:02,039 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:03:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 12:03:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 12:03:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:02,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:02,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:02,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1434042835, now seen corresponding path program 1 times [2020-07-20 12:03:02,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:02,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336338829] [2020-07-20 12:03:02,102 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 12:03:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:02,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 12:03:02,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:02,391 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 12:03:02,400 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 12:03:02,428 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 12:03:02,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:03:02,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336338829] [2020-07-20 12:03:02,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:03:02,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 12:03:02,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590473989] [2020-07-20 12:03:02,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 12:03:02,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:02,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 12:03:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:03:02,478 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-07-20 12:03:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:02,688 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-20 12:03:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 12:03:02,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 12:03:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:02,704 INFO L225 Difference]: With dead ends: 30 [2020-07-20 12:03:02,704 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 12:03:02,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 12:03:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 12:03:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 12:03:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 12:03:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-20 12:03:02,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-20 12:03:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:02,764 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-20 12:03:02,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 12:03:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-20 12:03:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 12:03:02,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:02,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:02,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:02,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594220, now seen corresponding path program 1 times [2020-07-20 12:03:02,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:02,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452527887] [2020-07-20 12:03:02,986 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 12:03:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 12:03:03,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:03,123 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 12:03:03,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:03,145 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:03,258 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 12:03:03,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452527887] [2020-07-20 12:03:03,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:03,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-20 12:03:03,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784260569] [2020-07-20 12:03:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 12:03:03,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:03,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 12:03:03,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 12:03:03,269 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2020-07-20 12:03:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:03,602 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-07-20 12:03:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 12:03:03,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-07-20 12:03:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:03,604 INFO L225 Difference]: With dead ends: 23 [2020-07-20 12:03:03,605 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 12:03:03,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-07-20 12:03:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 12:03:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 12:03:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 12:03:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 12:03:03,614 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-07-20 12:03:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:03,614 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 12:03:03,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 12:03:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 12:03:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 12:03:03,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:03,616 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:03,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:03,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2102853613, now seen corresponding path program 2 times [2020-07-20 12:03:03,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:03,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292599237] [2020-07-20 12:03:03,845 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 12:03:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:03,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 12:03:03,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:04,040 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 12:03:04,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:04,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:04,245 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 12:03:04,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292599237] [2020-07-20 12:03:04,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:04,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-20 12:03:04,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638656481] [2020-07-20 12:03:04,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 12:03:04,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:04,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 12:03:04,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-07-20 12:03:04,249 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 15 states. [2020-07-20 12:03:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:04,944 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-20 12:03:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 12:03:04,946 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-07-20 12:03:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:04,948 INFO L225 Difference]: With dead ends: 29 [2020-07-20 12:03:04,948 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 12:03:04,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-07-20 12:03:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 12:03:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 12:03:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 12:03:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-20 12:03:04,971 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2020-07-20 12:03:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:04,971 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-20 12:03:04,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 12:03:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-20 12:03:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 12:03:04,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:04,974 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:05,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:05,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 906772109, now seen corresponding path program 3 times [2020-07-20 12:03:05,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:05,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465217093] [2020-07-20 12:03:05,193 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 12:03:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:05,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-20 12:03:05,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:05,605 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 12:03:05,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:05,635 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:06,190 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 12:03:06,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465217093] [2020-07-20 12:03:06,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:06,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2020-07-20 12:03:06,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546450062] [2020-07-20 12:03:06,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-20 12:03:06,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-20 12:03:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2020-07-20 12:03:06,200 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 27 states. [2020-07-20 12:03:06,963 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-07-20 12:03:07,322 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-07-20 12:03:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:08,226 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-07-20 12:03:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 12:03:08,227 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 22 [2020-07-20 12:03:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:08,229 INFO L225 Difference]: With dead ends: 41 [2020-07-20 12:03:08,229 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 12:03:08,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 12:03:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 12:03:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 12:03:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 12:03:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-07-20 12:03:08,241 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-07-20 12:03:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:08,242 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-07-20 12:03:08,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-20 12:03:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-07-20 12:03:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 12:03:08,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:08,243 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:08,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:08,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1007922227, now seen corresponding path program 4 times [2020-07-20 12:03:08,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:08,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944992188] [2020-07-20 12:03:08,454 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 12:03:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:08,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 99 conjunts are in the unsatisfiable core [2020-07-20 12:03:08,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:09,313 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 12:03:09,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:09,354 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:10,901 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 12:03:10,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944992188] [2020-07-20 12:03:10,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:10,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 51 [2020-07-20 12:03:10,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091896831] [2020-07-20 12:03:10,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-20 12:03:10,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-20 12:03:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 12:03:10,906 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 51 states. [2020-07-20 12:03:11,922 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 12:03:12,352 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:03:12,735 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2020-07-20 12:03:13,133 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 12:03:13,530 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2020-07-20 12:03:13,871 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-20 12:03:14,193 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 12:03:14,496 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 12:03:14,762 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-20 12:03:15,056 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 12:03:15,355 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 12:03:15,663 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-20 12:03:18,406 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:03:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:18,421 INFO L93 Difference]: Finished difference Result 65 states and 88 transitions. [2020-07-20 12:03:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-20 12:03:18,426 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 34 [2020-07-20 12:03:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:18,428 INFO L225 Difference]: With dead ends: 65 [2020-07-20 12:03:18,428 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 12:03:18,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1942, Invalid=4064, Unknown=0, NotChecked=0, Total=6006 [2020-07-20 12:03:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 12:03:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 12:03:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 12:03:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-20 12:03:18,449 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 34 [2020-07-20 12:03:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:18,449 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-20 12:03:18,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-20 12:03:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-20 12:03:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 12:03:18,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:18,452 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:18,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:18,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash -765796787, now seen corresponding path program 5 times [2020-07-20 12:03:18,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:18,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135712832] [2020-07-20 12:03:18,670 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 12:03:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:18,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 195 conjunts are in the unsatisfiable core [2020-07-20 12:03:18,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:21,351 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 12:03:21,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:21,430 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:27,490 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 12:03:27,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135712832] [2020-07-20 12:03:27,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:03:27,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 99 [2020-07-20 12:03:27,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991793975] [2020-07-20 12:03:27,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-07-20 12:03:27,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:03:27,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-07-20 12:03:27,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2407, Invalid=7295, Unknown=0, NotChecked=0, Total=9702 [2020-07-20 12:03:27,499 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 99 states. [2020-07-20 12:03:31,239 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-07-20 12:03:32,728 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 12:03:33,746 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 194 [2020-07-20 12:03:35,279 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-20 12:03:36,371 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 196 [2020-07-20 12:03:37,731 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-07-20 12:03:39,078 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-07-20 12:03:40,356 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-07-20 12:03:41,664 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-07-20 12:03:42,900 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-07-20 12:03:44,089 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-07-20 12:03:45,283 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-07-20 12:03:46,468 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-20 12:03:47,616 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 12:03:48,777 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-07-20 12:03:49,858 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-07-20 12:03:50,931 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-07-20 12:03:51,993 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-07-20 12:03:53,048 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-20 12:03:54,062 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-07-20 12:03:55,091 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-07-20 12:03:56,085 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-07-20 12:03:57,030 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-07-20 12:03:57,939 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-07-20 12:03:58,846 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-07-20 12:03:59,688 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-07-20 12:04:00,504 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 12:04:01,306 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 12:04:02,150 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 12:04:02,948 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-20 12:04:03,742 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 12:04:04,507 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 12:04:05,223 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-20 12:04:05,934 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 12:04:06,614 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 12:04:07,263 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-20 12:04:07,882 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-07-20 12:04:08,480 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-07-20 12:04:09,057 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-07-20 12:04:14,951 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 12:04:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:04:14,970 INFO L93 Difference]: Finished difference Result 113 states and 160 transitions. [2020-07-20 12:04:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-07-20 12:04:14,971 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 58 [2020-07-20 12:04:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:04:14,973 INFO L225 Difference]: With dead ends: 113 [2020-07-20 12:04:14,973 INFO L226 Difference]: Without dead ends: 107 [2020-07-20 12:04:14,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=7318, Invalid=15032, Unknown=0, NotChecked=0, Total=22350 [2020-07-20 12:04:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-20 12:04:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-20 12:04:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 12:04:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-07-20 12:04:15,014 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 58 [2020-07-20 12:04:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:04:15,014 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-07-20 12:04:15,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-07-20 12:04:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-07-20 12:04:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-20 12:04:15,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:04:15,019 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:04:15,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:04:15,232 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:04:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:04:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1152480077, now seen corresponding path program 6 times [2020-07-20 12:04:15,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:04:15,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918076500] [2020-07-20 12:04:15,234 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 12:04:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:04:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 387 conjunts are in the unsatisfiable core [2020-07-20 12:04:15,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:04:27,580 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 12:04:27,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:04:27,839 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:05:06,192 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 12:05:06,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918076500] [2020-07-20 12:05:06,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:05:06,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 195 [2020-07-20 12:05:06,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964860042] [2020-07-20 12:05:06,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2020-07-20 12:05:06,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:05:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2020-07-20 12:05:06,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9415, Invalid=28415, Unknown=0, NotChecked=0, Total=37830 [2020-07-20 12:05:06,204 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 195 states. [2020-07-20 12:05:35,170 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 482 [2020-07-20 12:05:48,495 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 477 [2020-07-20 12:05:52,968 WARN L193 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 480 DAG size of output: 386 [2020-07-20 12:06:07,574 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 472 [2020-07-20 12:06:11,842 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 482 DAG size of output: 388 [2020-07-20 12:06:27,087 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 467 [2020-07-20 12:06:38,904 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 462 [2020-07-20 12:06:49,138 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 457 [2020-07-20 12:06:59,775 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 452 [2020-07-20 12:07:10,520 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 447 [2020-07-20 12:07:21,215 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 442 [2020-07-20 12:07:32,042 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 437 [2020-07-20 12:07:42,935 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 432 [2020-07-20 12:07:54,077 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 427 [2020-07-20 12:08:05,570 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 422 [2020-07-20 12:08:17,133 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 417 [2020-07-20 12:08:28,919 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 412 [2020-07-20 12:08:40,765 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 407 [2020-07-20 12:08:52,962 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 402 [2020-07-20 12:09:05,549 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 397 [2020-07-20 12:09:18,163 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 392 [2020-07-20 12:09:31,114 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 387 [2020-07-20 12:09:44,289 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 382 [2020-07-20 12:09:57,715 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 377 [2020-07-20 12:10:11,524 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 372 [2020-07-20 12:10:25,165 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 367 [2020-07-20 12:10:38,805 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 362 [2020-07-20 12:10:52,733 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 357 [2020-07-20 12:11:06,760 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 352 [2020-07-20 12:11:20,752 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 347 [2020-07-20 12:11:35,005 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 342 [2020-07-20 12:11:49,281 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 337 [2020-07-20 12:12:03,799 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 332 [2020-07-20 12:12:18,259 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 327 [2020-07-20 12:12:32,731 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 12:12:47,239 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 317 [2020-07-20 12:13:01,974 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 312 [2020-07-20 12:13:16,668 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 307 [2020-07-20 12:13:31,457 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 12:13:46,297 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 297 [2020-07-20 12:14:01,162 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 292 [2020-07-20 12:14:15,035 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 287 [2020-07-20 12:14:28,419 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 282 [2020-07-20 12:14:41,749 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 12:14:54,904 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 272 [2020-07-20 12:15:08,015 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 267 [2020-07-20 12:15:20,864 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 262 [2020-07-20 12:15:34,196 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 257 [2020-07-20 12:15:48,054 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 252 [2020-07-20 12:16:01,836 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 247 [2020-07-20 12:16:15,461 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 242 [2020-07-20 12:16:29,081 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 12:16:42,579 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 232 [2020-07-20 12:16:55,529 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 227 [2020-07-20 12:17:06,771 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 222 [2020-07-20 12:17:17,718 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 217